solve day 18!

it was kinda ez

.envrc

@@ -1 +1 @@
-eval $(opam config env)
+eval $(opam env --switch=.)

.gitignore

@@ -1,2 +1,3 @@
 .DS_Store
 _build/
+_opam/

.ocamlformat

@@ -1,2 +1 @@
 profile = janestreet
-version = 0.26.0

.ocamlinit

@@ -0,0 +1,2 @@
+#install_printer Aoc.Vec2.pp;;
+#install_printer Aoc.Grid.pp;;

README.md

@@ -0,0 +1,6 @@
+## 2022 AOC problems in Ocaml 
+
+```sh
+$ opam switch create . --deps-only -y
+$ dune build
+```

aoc.opam

@@ -10,8 +10,21 @@ homepage: "https://github.com/username/reponame"
 doc: "https://url/to/documentation"
 bug-reports: "https://github.com/username/reponame/issues"
 depends: [
+  "utop"
+  "ocaml-lsp-server"
+  "ocamlformat"
   "ocaml"
   "dune" {>= "3.10"}
+  "re"
+  "containers"
+  "iter"
+  "dune-site"
+  "angstrom"
+  "ppx_deriving"
+  "ppx_deriving_hash"
+  "ppx_regexp"
+  "ppx_expect"
+  "ppx_inline_test"
   "odoc" {with-doc}
 ]
 build: [

dune-project

@@ -21,7 +21,28 @@
  (name aoc)
  (synopsis "A short synopsis")
  (description "A longer description")
- (depends ocaml dune)
+ (depends
+   ;; development env
+   utop
+   ocaml-lsp-server
+   ocamlformat
+
+   ;; deps
+   ocaml
+   dune
+   re
+   containers
+   iter
+   dune-site
+   angstrom
+
+   ;; ppx
+   ppx_deriving
+   ppx_deriving_hash
+   ppx_regexp
+   ppx_expect
+   ppx_inline_test
+ )
  (sites (lib inputs))
  (tags
   (topics "to describe" your project)))

exe/dune

@@ -1,4 +0,0 @@
-(executable
- (public_name aoc)
- (name main)
- (libraries aoc))

exe/main.ml

@@ -1,6 +0,0 @@
-open Aoc
-
-let () =
-  Day1.print ();
-  Day2.print ()
-;;

inputs/day10.tt

@@ -0,0 +1,143 @@
+addx 2
+addx 3
+noop
+noop
+addx 1
+addx 5
+addx -1
+addx 5
+addx 1
+noop
+noop
+addx 4
+noop
+noop
+addx 5
+addx -5
+addx 6
+addx 3
+addx 1
+addx 5
+addx 1
+noop
+addx -38
+addx 41
+addx -22
+addx -14
+addx 7
+noop
+noop
+addx 3
+addx -2
+addx 2
+noop
+addx 17
+addx -12
+addx 5
+addx 2
+addx -16
+addx 17
+addx 2
+addx 5
+addx 2
+addx -30
+noop
+addx -6
+addx 1
+noop
+addx 5
+noop
+noop
+noop
+addx 5
+addx -12
+addx 17
+noop
+noop
+noop
+noop
+addx 5
+addx 10
+addx -9
+addx 2
+addx 5
+addx 2
+addx -5
+addx 6
+addx 4
+noop
+noop
+addx -37
+noop
+noop
+addx 17
+addx -12
+addx 30
+addx -23
+addx 2
+noop
+addx 3
+addx -17
+addx 22
+noop
+noop
+noop
+addx 5
+noop
+addx -10
+addx 11
+addx 4
+noop
+addx 5
+addx -2
+noop
+addx -6
+addx -29
+addx 37
+addx -30
+addx 27
+addx -2
+addx -22
+noop
+addx 3
+addx 2
+noop
+addx 7
+addx -2
+addx 2
+addx 5
+addx -5
+addx 6
+addx 2
+addx 2
+addx 5
+addx -25
+noop
+addx -10
+noop
+addx 1
+noop
+addx 2
+noop
+noop
+noop
+noop
+addx 7
+addx 1
+addx 4
+addx 1
+noop
+addx 2
+noop
+addx 3
+addx 5
+addx -1
+noop
+addx 3
+addx 5
+addx 2
+addx 1
+noop
+noop
+noop
+noop

inputs/day11.tt

@@ -0,0 +1,55 @@
+Monkey 0:
+  Starting items: 97, 81, 57, 57, 91, 61
+  Operation: new = old * 7
+  Test: divisible by 11
+    If true: throw to monkey 5
+    If false: throw to monkey 6
+
+Monkey 1:
+  Starting items: 88, 62, 68, 90
+  Operation: new = old * 17
+  Test: divisible by 19
+    If true: throw to monkey 4
+    If false: throw to monkey 2
+
+Monkey 2:
+  Starting items: 74, 87
+  Operation: new = old + 2
+  Test: divisible by 5
+    If true: throw to monkey 7
+    If false: throw to monkey 4
+
+Monkey 3:
+  Starting items: 53, 81, 60, 87, 90, 99, 75
+  Operation: new = old + 1
+  Test: divisible by 2
+    If true: throw to monkey 2
+    If false: throw to monkey 1
+
+Monkey 4:
+  Starting items: 57
+  Operation: new = old + 6
+  Test: divisible by 13
+    If true: throw to monkey 7
+    If false: throw to monkey 0
+
+Monkey 5:
+  Starting items: 54, 84, 91, 55, 59, 72, 75, 70
+  Operation: new = old * old
+  Test: divisible by 7
+    If true: throw to monkey 6
+    If false: throw to monkey 3
+
+Monkey 6:
+  Starting items: 95, 79, 79, 68, 78
+  Operation: new = old + 3
+  Test: divisible by 3
+    If true: throw to monkey 1
+    If false: throw to monkey 3
+
+Monkey 7:
+  Starting items: 61, 97, 67
+  Operation: new = old + 4
+  Test: divisible by 17
+    If true: throw to monkey 0
+    If false: throw to monkey 5

inputs/day12.tt

@@ -0,0 +1,41 @@
+abcccccccccccccccccccccccccccccccccccccccccccccccccccaaaaacccccccccccccaaaaaaaccccccccccccccccaaaaaaccccccccccccccccccccccccccaaaaacccaaaccccccccccccccccccccccccccccccaaaaa
+abcccccccccaaaccccccccccccaaaccccccccccccccccccccccccaaaaaacccccccccccccaaaaaaaaaaaccaaaaccccaaaaaaacccccccccccccccccccccccccccaaaaaacaaaaccccccccccccccccccccccccccccccaaaa
+abcccccccccaaaaaacccccccccaaaacccccccccccccccccccccccaaaaaaccccccccccccaaaaaaaaaaaccaaaaacccaaaaaacccccccccaaacccccccccccccccaaaaaaaacaaaaccccccccccccccccacccccccccccccaaaa
+abcccccccccaaaaaacccccccccaaaaccccaacccccccccccccccccaaaaaaccccccccccaaaaaaaaaaaaaacaaaaaaccaacaaaccaacccaaaaaaccccccccccccccaaaaaaaacaaaccccccccccaccccaaaccccccccccccaaaaa
+abcccccccaaaaaaaccccccccccaaaacccaaaaccccccccccccaaccccaaacccccccaaacaaaaaaaaaccccccaaaaaacccccaaaccaacccaaaaaacccccccccccccccccaaccccccccccccccccaaacccaaaccccccccccccaaaca
+abcccccccaaaaaaacccccccaaacccccccaaaacccccccaaccaaaccccccccccccaaaaacaaaaaaaaaccccccaaaaaccccccccaaaaaaaacaaaaaccaacaaccccccccccaaccccccccccccccccaaaaaaaaaccccccccccccccccc
+abcccccccccaaaaaaccaaccaaacccccccaaaacccccccaaaaaaaccccccccccccaaaaaaccccaaaaaacccccccaaaccccccccaaaaaaaaaaaaacccaaaaacccccccaaaccccccccccccccccccaaaaaaaackcccccccccccccccc
+abcccccccccaaaaaaccaaaaaaaccccccccccccccccccaaaaaacccccccccccccaaaaaaccccaaaaaaccccccccccccccccccccaaaaccaaaaaccccaaaaaccccccaaaaaccccaaaaaccccccccaaaajjkkkkkccccccaacccccc
+abcccccccccaaccccccaaaaaaccccccccccccccccccccaaaaaaaaccccccccccaaaaacccaaaacaaccccccccccccccccccccaaaaaccccccccccaaaaaacccccaaaaaaccccaaaaaccciijjjjjjjjjkkkkkkccaaaaaaccccc
+abcaaaccccccccccccccaaaaaaaaccccccccccccccccaaaaaaaaacccccccccccaaaacccaaaccaaccccccccccccccccccccaacaaacccccccccaaaacccccccaaaaaacccaaaaaaciiiijjjjjjjjjoopkkkkcaaaaacccccc
+abaaaacccccccccccccaaaaaaaaaccccccccccccccccaaaaaaaacccccccccccccccccccaaaaaaaccccaccaccccccccccccacccaacccccccccccaaccccccccaaaaacccaaaaaaiiiiiijjjjjjoooppppkkcaaaaaaacccc
+abaaaaaccccccccccccaaaaaaaaccccccccccccccccaaaaaaaccccccccccccccccccccccaaaaaaccccaaaacccccccccccccccccccccccccccccccccccccccaaaaccccaaaaaiiiinnnoooooooooppppkkkaaaaaaacccc
+abaaaaacccccccccccaaaaaaaccccccccccccccccccccccaaacccccccccccccccccccaaaaaaaacccccaaaaccccccccccccaaccaacccccaccccacccccccccccccccccccaaaciiinnnnoooooooouupppkkkaaaaaaacccc
+abaaaaccccccccccccccccaaaccccccccccccccccccccccaaacccccccaaccccccccccaaaaaaaaacccaaaaaacccccccccccaaaaaaccccaaaaaaaacccccccccccccaaccccccciiinnnntttooouuuuupppiiacaaacccccc
+abaaaacccccccccccccccccaaccccccccccccccccccccccccccccccaaaacacccccccccaaaaaaaacccaaaaaacccccccccccaaaaaccccccaaaaaacccccccccccaaaaaacccccciinnnttttuuuuuuuuuuppiiccaaacccccc
+abcccccccccccccccccccccccccccccccccccccccccccccccccccccaaaaaacccccccccccaaaaaaaccccaacccccaaccccccaaaaaacccccaaaaaacccccccccccaaaaaccccccciinnntttttuuuuxyuuuppiiicccccccccc
+abccccccccccccccccccccccccccccccccccccaaacccccccaaccccccaaaaccccccccccccaaccccccccccccccccaacaaacaaaaaaaacccaaaaaaaaccccccccccaaaaaaaccccchinnnttxxxxuuxyyyuuppiiiiccccccccc
+abccccccccccccccccccccccccccccccccccccaaaaaaccccaaacccccaaaaccccccccccccaaccccccccccccccccaaaaaccaaaaaaaaccaaaaaaaaaaccccccccaaaaaaaaccccchhhnnttxxxxxxxyyuvppppiiiccccccccc
+abccccccccccccccccccccccccccccccccccaaaaaaaaaaccaaaaaaacacaacccccccccccccccccaaaccccccccaaaaaaccccccaacccccaaaaaaaaaaccccccccaaaaaaaaccccchhhnntttxxxxxxyyvvvppqqiiicccccccc
+abccccccccccccccccccccccccccccaacaccaaaaaaaaaaaaaaaaaaacccccccccccccccccccccaaaaaaccccccaaaaaaacccccaacccccaccaaaaacacccccccccacaaaccccccchhhnnnttxxxxxyyyvvvvqqqqiiiccccccc
+SbccccccccccccccccccccccccccccaaaaccaaaaaaacaaaaaaaaaaccccccccccccccccccccccaaaaaaccccccccaaaaaaccccccccccccccaaaaccccccccccccccaaacccccchhhmmmtttxxxEzzyyyyvvvqqqqiiccccccc
+abcccccccccccccccccccccccccccaaaaaccccaaaaaccaaaaaaaaacccccccccccccccaaaaaccaaaaaaccccccccaaccaacccccccccccccccaacccccccaaaaccccccccccccchhhmmmtttxxxyyyyyyyyvvvqqqjjjcccccc
+abcccaaacccccccccccccccccccccaaaaaacccaacaaaaaaaaaaaaacccccccccccccccaaaaacccaaaaaccccccccaacccccccccccccccccccccccccccaaaaacccccccccccchhhmmmttsxxyyyyyyyyvvvvvqqqjjjcccccc
+abcccaaaaaacccaacaaccccccccccacaaaacccaacccaaaaaaaaaaaacccccccccccccaaaaaacccaacaaccccccccccccccccccccccccccccccccaacccaaaaaaccccccccccchhhmmmssxxwwwwyyywvvvvvqqqjjjjcccccc
+abccaaaaaaacccaaaaaccccccccccccaaccccccccccaaaaaaaccaaccccccccccccccaaaaaacccccccccccccccccccccccccccccccccccaaccaaacccaaaaaacccccccaaachhhmmssswwwwwwyyywvvqqqqqqjjjccccccc
+abcaaaaaaacccccaaaaacccccccccccccccccccccccccccaaaccccccccccccccccccaaaaaacccccccccccaaccccaaccccccccccccccccaaacaaacccaaaaaacccccccaaacgggmmsssswwwswwyywwrrqqqjjjjcccccccc
+abcaaaaaaaccccaaaaaacccccccccccccccccccccccaaccaaaccccccccccccccccccccaaccccccccccccaaccccaaaacccccccccccccccaaaaaaccccccaacccccccaacaaagggmmmssssssswwwwwwrrqjjjjjddccccccc
+abcccaaaaaacccaaaacccccccccccccccccccccccccaaacaaccccccccccccccccccccccccccccccccaaaaacaacaaaaccccccccccccccccaaaaaaaaccccccccccccaaaaaagggmmmmssssssswwwwrrrkjjjjddddcccccc
+abcccaaaaaacccccaaccccccccccccccccccccccccccaaaaaccccccccccccccccccccccccccccccccaaaaaaaacaaaacaaccccccaaccaaaaaaaaaaacccccccccccccaaaaaggggmmmmllllsrrwwwrrkkkjdddddaaacccc
+abcccaaaccccccccccccaacccccccccccccccccccccaaaaaaccccccccccccccccccccccccccccccccccaaaaacccccccaaaaaaccaaaaaaaaaaaaaacccccccccccccccaaaaaggggmmllllllrrrrrrrkkkdddddaaaccccc
+abccccaaaaaaccccccccaacaaaccccccccacccaaccaaaaaaaaccccccccccaaaccccccaacccccccccccaaaaaccccccccaaaaacccaaaaaaaaaaaaccccccccccccccccaaacaacggggggflllllrrrrrrkkddddaaaaaccccc
+abccccaaaaacccccccccaaaaacccccccccaaaaaaccaaaaaaaaccccccccccaaacacccaaaaccccccccccaacaaacccccaaaaaaccccaaaaaaaccaaacccccccccccccccccaacccccggggffffllllrrrrkkkdddaaaaaaacccc
+abccaaaaaaacccccccaaaaaaccccccccccaaaaaccccccaacccccaaccccaacaaaaaccaaaacccccccaaccccaaccccccaaaaaaaccaaaaaaaaccaaaccccccccccccccccccaaaccccccgffffflllkkkkkkeedaaaaaaaacccc
+abccaaaaaaacccccccaaaaaaacccccccccaaaaaacccccaacccccaaacccaaaaaaaaccaaaacccaaaaacccccccccccccccaaaaaacaaaaaaaacccccccccccccccccccccccaaaacaacccccffffllkkkkkeeedccaaaaaacccc
+abccccaaaaaaccccccccaaaaaacccccccaaaaaaaacccccaaccccaaaaaaaaaaaaccccccccccaaaaaaaacccccccccccccaaccaaccccaaaccccccaacccccccccccccccccaaaaaaaccccccfffffkkkkeeeecccaacccccccc
+abccccaaccaaccccccccaaccaacccccccaaaaaaaacccccaaccaaaaaaaaccaaaaacccccccccaaaaaaaaccccccccccaacaaccccccccaaccccaacaaaccccaacccccccccccaaaaaaccccccaafffeeeeeeecccccccccccccc
+abccccaaccccccccccccaaccccccccccccccaacccccaaaaaaaaaaaaaaacaaacaaaaaaacaccaaaaaaacccccccaaacaacccccccccccccccccaaaaaccccaaaacccccccaaaaaaaaccccccaaaaffeeeeeeeccccccccccccca
+abacccccccccccccaaacccccccccccccccccaacccccaaaaaaaaaaaaaacccaaccaaaaaaaaaaaaaccaaacccccccaaaaaccccccccccccccccccaaaaaaccaaaacccccccaaaaaaaaaccccccaaacceeeeeccccccccccccccaa
+abaaccccccccccaaaaaacccccccccccccccccccccccccaaaacccaaaaaaccccccaaaaaaaaaaaaaaaaaaaccccccaaaaaaacccaaaccccccccaaaaaaaaccaaaaccccccccaaaaaaaaccccccccccccaaacccccccccccaaacaa
+abaaccccccccccaaaaaacccccccccccccccccccccccccaaaaacaaaaaaaccccccaaaaaaaaaaaaaaaaaaccccccaaaaaaaaccccaaaaccccccaaaaacaaccccccccccccccccaaaaaaacccccccccccacacccccccccccaaaaaa
+abacccccccccccaaaaaaccccccccccccccccccccccccaaaaaacaaaccaaccccccaaaaaaccaaaaaaaaccccccccaaaaaaaaccaaaaaacccccccccaaaccccccccccccccccccaacccccccccccccccccccccccccccccccaaaaa

inputs/day13.tt

@@ -0,0 +1,449 @@
+[[9,[8,[7]],4,7,[[4,9,3,2],6,5,[1,10,2,4,5],[1,3,2,6,1]]],[4,[6],3],[4,[7,0,3,8,8],[7,[10],[10,10,10,7]]]]
+[[],[[6,4,[5],4,[0,5,5]],3,[5,[],9]],[[[5,1,6,2],[6,4,7],[4,7,4,2]],[10,[],[6,9,4],[6,2],9]],[[[10,5,9],10,0,[4,1,4,10,1],1],[7,7,[10,8],6],2]]
+
+[[[8,2],2,[[10],[],6,10,[10,10,3,10,3]]],[],[]]
+[[[[7,3,5],10,[4,1,0,8,7],9],10,[]]]
+
+[[6,2,[2,[10,10,0],[2]],7]]
+[[7,9],[5,[8,[0,5,5,10,4],6,8,6],3,[4],2],[4]]
+
+[[[5],[6,[5,3,0],[6,2,5,2,6],1,6],[[]],[3,[1,1,0],[],1,[9,4,3,5,7]]],[[1,9,[2,2,6],[8,9],2],1,[[],0,8],[[],9],3]]
+[[],[[10,9],[],[[6],9,8,[3]],[0,5,[5],6],2],[[[5,2,5,3,5],4],9,6],[8]]
+
+[[[[9,10,8,4],2],[[10]]],[1,[[],9,[7,2,2,1,0],5]],[[[10],[],[5]],10,[],9],[[],[2,[1],[4],7,[6,1,5,0,1]]]]
+[[[[6,9],[8,2,2],[5,1,6],[0,1]],[[2,5,1,3],9,[]],[[10,3,9],10,4]],[[[5,2,0],[7,3],9],[[5,3,2,6]],4]]
+
+[[[1,0,9,[10]],[],[8,2,[0,2],6,[]]]]
+[[4,3],[2]]
+
+[[7]]
+[[7,[[4,0,9,9]],3,[10,0,6,[5,2,0,1,7]],7],[5,[3,[2,8,7],[9],[2,3,5,0,10]],10,[[3,0,8],6,[5,5,7],[2,10]]],[3,4]]
+
+[[[[0,9,5,2],[6,0,4,10]],[10,7]],[[6]],[7],[[[1,10,8,0,6],7,[3],0],3],[[[1,5,5],[6,6,9],[],[4]],1,9]]
+[[[[2,3],[7],10,[2,1,3]],10,[6,9,[0,8]],[[6,6,5],[10,6]],[[],[],7]]]
+
+[[[6],7,[10,[2],3],[[2,3]],[[1,1,7],[0,6,6,2],[7],[]]],[4],[2],[[6,2,10,3,6],[[5,7,10,3,6],8,[1],[]],7,5,[]],[[]]]
+[[[],[7,5,8],0,3,[]],[2,8],[7],[8,0,[[0],3,[2]]],[1]]
+
+[[[],5,[0]],[7],[[2,7,[7]],[[8,3],[8,9,8],6,[]],[1,3,[0,4,10],[6,1,9]],8],[[3,0]]]
+[[5,[],10]]
+
+[[8,[[0],5,[],3],[0,8]]]
+[[],[3,5],[[[8,9,5],1,[3,9]],[[0,0],9,2],[0,1,8]],[0,3,[[3]],[7,[3,5,10],[1,9,10],[9,5],[2,4,3,9,7]]],[[8,3,6],6,[7,5,8],[[],4,1]]]
+
+[[6],[]]
+[[],[[[3,5,9],[0,7,5],[3,8,1,9,6]],[1,[3,3,10],0],[5,8,3,0,3],3,8],[[[1],[9,9,3,3],[7],[7,10,1,6]],4,10,[[7,7,2,0,3]],[10,9]],[9]]
+
+[[3,2,4]]
+[[[[2],4,[9,4,6,0]],[7,[]],[[0,5,9],[7],7,3],[[8,0,0,4,5]],[9,[3,5,4,10],[7,7,4]]],[[9,[],[8,5,6,4,9]],1,10,4,7]]
+
+[[],[[],[8]],[1,[[8,10,0,2],1,4,[1,10,9]],3],[[[0,4,5,6,6]],5,[[9,0,5],[3,10],8],3],[[9],4,[[3,6],6],[8,[5],10,[7,0]],7]]
+[[1]]
+
+[[[[5,3,8,2],1,[10]],9],[[[9,3,0,7],8,[10,1,6,9],[7,6,3],[6,7,5]],[6,1,[1,6,10,8],7,[]]]]
+[[8],[[7,[5,6],0],[4,[],[5,2,10,8]],[10]],[[],6,[],[10,5,3],[3,4]],[[[7,4,7,8,0]],9]]
+
+[[7,[7,7],4,1,4],[10,[10,[2,4,9],0,[5,10,7],1],10,[9,2,[0,6,3,9,10],8,[7,9,7,10,3]],[3,[0,2]]],[9,3]]
+[[3,[0,[5,0,8,1]],[]],[],[[3,[2,4,4,0,0],2],[4,[9,1,0]],1],[],[]]
+
+[[[[5,10,10,8]],[[5,7,10,10],[],[2,4,10,9],1,[]],9,8,[10,[5],[7,6,8,2],10,[2,9]]],[8,3,[[],3,[4,3,0],1,2],[6,[2,8],[2],0,0],5],[2,[[6,0,0,4,9],[7,10],1,[]],[[8],10],[[1,10]]],[6,10,[[3,6,7,9],5],4]]
+[[[]],[[[10,5,9],2],4,[0,[8],[0,8,9,2,6]],[8,0,[4,4,10],7]],[[6,[]],10,[[],[5,10]],[6,9],[3,10,[2,5,1,7,7],[2,6,10]]],[[],[[],5],[[5],[7],[8,2,2,8]],[2,[4,0],8]],[[[10],8,[10]],[],[]]]
+
+[[[[6,6,1],[3,10,5]],[[3,9,6,0],2,[10,1,8,8]],[],[[6,9],5,5,[],4]],[[7],3],[[[],[8,4,2,0,8]],10,2,7],[8],[10,7,[[2,6,0,0,8],[3,10,10],[],9,[7,9,3]],6]]
+[[6,8,[[9,0,8,7,5],0,3],[],0],[8,[6,9],8,[[0],7,[10,6],6,[7]],8]]
+
+[[[[9],[6,6],0,8,[7,2]],[7,[],[9,6,2],9,[]],[[],7,7,[6,6]]],[1,3,1],[1,[[8,0,10,1,9]],9],[10,5]]
+[[[[4,6,8,9],8,[3,3,6],[10]],[[3,6,7,5],[],[4,9]],[6,0,8],[],[5,[2]]],[[[5,1,6,2,8],2],3,[9,9,[],0,1],5,[10,[9,5,2],5]],[]]
+
+[[[]],[]]
+[[8,[5,[6,3,2],[10,5,4],[5,1],[5,10,5,9,7]],4,[8,2,0,6],4],[[[0,9,5,7],9],6,[[0,8,10,8],9,[9,0,3,7,1],[6,8,2,5,10],[]],7,[1,[],4,[0],[2]]],[1],[[7,[],6,2,1]],[2,3]]
+
+[[5],[3,[1],[[6]],[[2],[],3,[6,1,8,6,1],[4,6,4,7]],[3]]]
+[[[[6,5,1],9],[],7,7],[0,4]]
+
+[[[],5,4,7,[[9,5,9],[]]]]
+[[10,[1,[2,3],9,[3]]],[[[5,7,9,10,8],[]],0]]
+
+[[6,8,[0,1,10]],[[4,7],[[7,0,0,3],6,2]],[[[10],[6,5,3,10,0],[0,2,4],[8,10],[7]],1],[2,[2]]]
+[[],[5,8,[[],[6,3,2,3],9,3,[]],[0,[4,1,5],4],[[0,6,4],[],[3,6,10,9],3,[0,0]]],[[6,3],6,2,10,8],[5,[[0,9,4,6,1],[6,9,4]],3,[],0]]
+
+[[4,8],[],[],[7,6,4]]
+[[],[[5],[[8],[10],7,[9,10]],9],[3],[[9],[[3,0,5]]],[10,[[6,0,3],[2,4,3,0],4,10,10]]]
+
+[[4,10,[[8],[6,4,8,8,10],1,[10,2],[7,8,9,0]],1],[6,4,3],[7,8,4],[[9,[10,4,8,7,2]]],[3,5]]
+[[],[[[0,0,5,10],9,10],[[6,7,5]],[[3,6,7,2,2],[9],[7,5],9],[[0,0,10,9,8],5,[3,2]],[]]]
+
+[[[],[[],8,0]],[[[],[],[]],9],[[7],3,10,4,[3,[4,7,0,2]]],[[[0,9,2,1],[2]]],[[[1,7],6,8,[2,5]],8,7]]
+[[],[1],[6,[],1,[4,[],[10]],[[10,9,1],[]]],[[[2,1,5,10],[9,9,5,7,9],[9,1]],[[2],[5,9]],[[8],[2,8,2,4,5],4,[3,9,3],9],9]]
+
+[[7,[4,9,[],[7,6,8,7],3],6,7],[7,9,[[2,3],7,5,[7]],[[6],4,[2,8,5,10],[4,9,10,6]]],[[],10],[5,[5],8,[],[3,[6,1,7,10,1],7,5,[10,8]]],[[[7,7,8],8,8]]]
+[[7,[10,1,[5,3,9],1,[]]]]
+
+[[[[8,2,10,7,3],8,[0,7,0]]]]
+[[4,7],[[2,[],7],4,[10,[4],[5,6],1,1]],[5,[[9,1]]],[[6,2],[2,3,[1,4,1]]],[]]
+
+[[6,[[],10],[5,3]],[],[6,4,9],[7,[6]],[0,[],[[8,7,8,10,7],[],[10,6,4],[4],0],8,[8,7,1,[10,6,5],[10,1,5]]]]
+[[3,8],[[3,[1],10]],[[6,2,[],[9,6],5],[[1,8,9,2,9]],[3,[],[7,6,4,7,6]]],[[[3,9,5,0,2]]],[[],7,7]]
+
+[[10,7],[9,7,2,5,1]]
+[[],[],[[]],[[7,2,[],[2,10,7],8],4,0,[2,[],[8,8,9],5,[6,1]],[1,4,[6,5,4,1,4],[7,7,9],2]],[[],5]]
+
+[[[[6,7,10,0,4],[5,3,2,8,4]],[[1],[],[5,4],8,2],0],[1,5,10],[[2]]]
+[[],[10,1,[[1,3,0],[0,1,7,7],[1,5,10,7,3],[4,6]],4,[]],[9,9,[8,[4,1,7],[4,1,8,9],[7,6,5,10,5]],[0,6,[6]],6]]
+
+[[[[2,3,3],2,[]]],[[[4,6,7,5],[7,3,3,10],[4,6,10,2,3],[4],7]],[[[1,3,4,0,4],10],[10,[],4,3]],[],[3,[],9,2,8]]
+[[],[[[9,1,8,4],7]]]
+
+[[],[3,10,[[1,6,1],[1,2,1],[9],[3,7,9,10]],[[]]],[[[9,3,7,6],[6,8,2,3],10],[8,8,1,5],[6,2,4,[2,8],1]],[[[6,8,9,8],5,5],[[],[0,4,5],[4,5,8,7]]],[]]
+[[[]],[[1,[2,4,0,4,4]],[2,[],4],[7,[9,5,5],[0,2,0,5]],10,8]]
+
+[[],[],[],[3,[8,5,[7,2,9,9]],[[2],[4,10]]],[]]
+[[9,[9,10,8,[4,6,3,0]],7],[[4,[8,4,2,8],5,[0,10,9,4,9],2],[2,10],[4,[10,1]]],[10]]
+
+[[4,[[10,5],8]],[4,8,7],[[[7],[],5],10],[[],5]]
+[[[[0,7],[9,8],[]],9,[[6,2],4],1,[]],[1],[[7,4,2,[8,2,3]],8,3,[[1,9,10,7],[2,2,3,2]]],[[[3,1,8],8,[6,1,1,6,5],[1],6],[6,[],10],[[],3],7,10]]
+
+[[[7,[5,6,3,2,5],[0,6,0,3],[0,4,10,6,8]],4],[],[[],[[10,9],[10,4,9]],[[1,8,6],6,[]]],[5,9],[[],[[],[3,3]]]]
+[[],[6],[[3,[1],4,[10,0,1,6,3],7],[],9],[0,[[],6,4,2]],[]]
+
+[[7,[]]]
+[[5,3,[6],[],[10,[0,7,3,9]]],[[[9,1,5],5,0,1,8]],[[[2,3,10,1],10],10],[[[],5,4,1,8],[0,[5,1,4,9,3],2,10],[],[9]],[2,10,8,6,4]]
+
+[[[],1,8,[4]]]
+[[[5,5,[]],[[],[3,2,5,10],[4],[5,5,8,2,6]],6],[[10],[[5,0],[2]],9],[[4],[]]]
+
+[[[2,6,[9,10]],9,7],[8],[7,6],[8],[8,0,3,0]]
+[[[],[[],4,[1],6,[5,9,0,0]],9,9,4]]
+
+[[[],9],[[10,8],6,[[8,0,0,7],[6],3,[5,5,1],10],[[9,3,6],[8,3,0]],[]],[[0,7,1],3,3],[5],[4]]
+[[[8,[4,6,0,4],2,[8]],[[6,10,6],[2],4],5,9,[3,[3],[10],7]],[6]]
+
+[[[6,6,[0,5,3,10],10],[3,0,7,[8],[3,9,10,1,7]],8,[6,9,[]],[1]],[],[5],[5,[4,[6,9],2,[8],[]],0]]
+[[],[],[[6,[],6],[9,8],7,[],[3,[5,9],4]],[[7,[3,7],[4,8,10,9],10],[[],9],8,[5],5]]
+
+[[[[],6,0,[2,6,7,7]],9],[[7,1,[5,4,5,2,10],[]],7,[4,2,1,0],10],[6,7,[]]]
+[[1,[[],5,10,[8]],[8,1,[],[1]],[[2,0,1,10,6],[10,7,3,5]]],[[[10,5,5,10],[]]],[0,[[5,7],[],9,6],[5,0,3],[]],[[6,5,0,[0,1,9,3],[9]]],[0,[4,1,3],7]]
+
+[[[],[1],[],10],[6,9],[10,10],[]]
+[[9,7,[[0,2],5,[8,1,5]]]]
+
+[[],[0,[[7,8,4,1],9,0,2]],[[2,7,[],[1,6],[4,6]],[7,[]],0,[[1,0,5]],1],[5,[6,[9,4,2,6,4],10,[7,7,8,8,1]],[7,9,[7]]],[]]
+[[],[9,3,[[2,8,6,3,9],1,6,[6,8]]]]
+
+[[[6,6,[7,7,3]],[]],[3,2,0,[3,[8,4]],5],[9,10,7,10],[[9,[0],10,10,[1,9,0]],[[],1,3]]]
+[[2,4,5],[],[0,[],[[0,2,8,0,7]],[[],[7],[0,2,9]]],[]]
+
+[[[[]]]]
+[[[[],[10],[0,9,7,9],5,[]]],[]]
+
+[[[],[[],10,1,[7,3,0],[4,10]],[]],[[],[10,[7,4,7],[],9,[0,4,3,8]]]]
+[[],[[[],10,1,2,0],10,[[]]],[[4],[[8,7,10],8,7],0],[[0,[4],[],[0,1,10,3],9]]]
+
+[[[7,[],[1],[6,4,0]]],[[[7,1,10]],[[1],[1,9,4,6]]],[9]]
+[[1],[4,5,3,8,[9,4,[0],[4,7,0]]],[9,[4]]]
+
+[[],[[[10],6],[],[[2,1,9,10]],4,[4,1,10,3,0]],[[],[],0,[[]],[5,[10,5,9,1,1],[9,4,8]]],[],[3]]
+[[9,[[6]],[],[[],5]],[[[3],10,9],1,[5,[10,1,10,1],[8,2,2,10,7],9,10],0],[8,3,[[0,10,3],6,[8,10,7,0,6]]],[[],2,7]]
+
+[[7],[9]]
+[[[[6,2,0,5],9],[[2,4,5],5,[0,6,8],[9],3],[[5,5,8],10,[0,5,2,3],7,[3,0,9,3,7]],7],[8,[[2,1,2,6],2,4],6,[],[2,[7,2,6,9],1]],[8,5,[10,[1,3,4,9],1,3],8],[[3,7,[9,5],[10,5,1],10],[[5,7,5,2,8]],[2,7,[],3,2],[[0,2,0,6],[5,7,9],7,[7,8]],[7]],[0,[[],[],4,10],5,[[9,10,5],3]]]
+
+[[4,8,[9,[],[0,6,9,0,7]],[[2]],[1,4,8,10]],[[]],[[6,[1,3,2,7],[7,10,4,9,0]],5,3],[[[],[8],[2,7,1,3,4]],[]]]
+[[],[],[4,9,7,6],[3,10,0,[]],[10]]
+
+[[],[[],[],8,10]]
+[[[[0,10,2,6],[3,8,9],6,[3,9,8]]],[[5,0,[2,3,9],[0,5],[4,4,1]],[[],7,[6,3,2,10,2]],5,9,[3]],[[]],[3,[[],7]],[[2,6,7,1],[1],3,[9,9]]]
+
+[[[],7,[],[6,3,3,[4,5,6,10,8],[6,3,1,2,10]]],[[[],1,[8],[5,0,0],9],[],[[1,2,8,6]],[[4,3,7,1],2,[1,7,3,0]],[6,[7,5,3,6],5,5,3]],[[[],[6,1,7],[3,0,1,0,5]],0,[[0,10],4,[3,7,5,8,1]]],[4]]
+[[5],[6],[],[5]]
+
+[[[8,[7],[9,7,5],[4,4,4,0,9],[0,8]]]]
+[[[[3,2,6,6],[1,4,1,7,0],[],10,[8,6]],[[5,4,2],[],6,[10,6,2,2,7]],7,[[6,4],[],8,[2,7]],8],[],[],[[[],7,6],1]]
+
+[[6,[1,6,[9,3,7,5],8,[8,2]]]]
+[[[9,3,[6,10],[],[9,5,1,2]],[[9,8],[6,4,8,9],[6,8,3],[9,7,9,10]],0,[[3,5,6,10],[7,0,7]],0],[6,[[8],[0,7,1],7,[8,1]],[4,4,3],[5,[],6,9],10],[7],[]]
+
+[[9,[3,3],[10,[8,10,9,9]],6,3],[[[6,2],6,5],[[6]],[1,[3,2,6]]],[9,7,1,5]]
+[[3],[9,[7],[3],[7,5,7],7],[],[[[],[3,3,0,9],[8]],2,8]]
+
+[[[[7,1,1],0,4,7,2],[[3,4,9,2],[8,7,5,0,9],5],[9]],[[[3,8,4,2,8]]],[]]
+[[0,3,[[8,10,9,0,4],5],[]]]
+
+[[[]],[[]]]
+[[[[2,6,8,2],2,6,0,8],[10,5,[0,2,1,0],0]],[4,3,[0,4,[3,7,0,0,5]],[[1,3,9],4],0]]
+
+[[[10],[[9],0,[6],2,0]],[[1,3,[7,3,1]],[8,[6,3,0,1,1]],5],[[7,[1,0],2,[]],5,4,3,4],[9,7,9,7,5]]
+[[9,0,[9,4]],[[[3]],5,5]]
+
+[[5,[10,0,[3,1],[0,8]]],[7,[[8,6,8,4,7],[],5,[7,10,8,3,9]],4,6]]
+[[[[7,6,6],8],[[9,7,10,6,3],8],0],[2,9,7],[[[3,9,8,7],[8,0],5],[[0,8,2],[]],[3,3,[3,4],0,6],[6,[8,5,4,6,2]]],[]]
+
+[1,0,10,1]
+[1,0,10,1,0]
+
+[[9],[2,6],[]]
+[[4,1,[[9],[8,6,10,5,2],3,[6,5,9,5],[8,0,2]],7,2],[1,[[1],6,[0,7],9],[10,5,4]],[6,9],[[[6],[1,5,5,10],5,[],[10,4,6,6,4]]]]
+
+[[[6,7,[],[8,3,9,3,7]],0,5,5,2],[4,[],8,[[10,10,3,0],5],[[4],3,10]],[],[7,10]]
+[[[7,[6]],[2,8,[8,1,4]],[[3,1,7,10],10,2],2,[4]],[8],[[]],[[1,[6,0,3,1,1]],[[5,2,7,3,10],8,[0,1,1,2]],[9,4],0],[[[7,9]]]]
+
+[[2,[],[],9,3]]
+[[0,9,4,2],[8,6],[[[8,7,3,1],[],[8],3,[4,2]],4,1,0,[]],[[],[]]]
+
+[[[2],[]],[[[3,5,2,3],10],[],[9,2,5,2,3],6],[],[[0,4,0,9],[[],[]],3,[8,5,[],[6]],[[],[],6,[7]]],[[],[9,3,1,[],[8,0,7]]]]
+[[6],[6,[[7,3,5,1]],7,3]]
+
+[[5,[[10],[0],[3],[2,4,5]]],[[8,[8,10,5,0],0,[1,7,8,1]],[10,[5,6,4,5],3],[0,3,[5,4,5,8],7],[4,[5,6],0,[0,10,7]]],[8,9],[[5,[10,3],3,[]],[7,1,8,[9],8],[],[9,[2,5],[3,5,2,4],[4]]]]
+[[8,10,4,[[],1,2,8,8],8]]
+
+[[[2,9],6,[],[5,0,10]]]
+[[[2],[[8,10,7,0],[7],[10,9,7,6]],8,[[8,10],8],[[2,8,9,3],[3]]],[7,2,8]]
+
+[[],[],[2,[6]],[[]],[1,3]]
+[[],[4,4,4,[[],3,[],7,[]]],[6,[]],[[9]],[[]]]
+
+[[[[4,5,9,3]],1,[],4,[[],[],[],7]],[[[0,6,9,8,7],[],3,[4,8,1],5]],[6,[9,10,6,9],[[9,10,2,1],[8,7,1],[10,10,3]],[[0,4,3]]],[]]
+[[5,[]]]
+
+[[4,8]]
+[[],[],[0,6,[10,[5,10],2,1,[3,3,1]],8]]
+
+[[7,10,[[2],10,7,[5,0,5],9],10],[4,[[5],[1,5,8,10,5]]],[0,1,[[2,6],[1,8],8,0],[10,[7,1,10,3,1],[],[0,0,6,10]]],[],[7]]
+[[],[3],[[3,1,1,3],1],[10,9,[],2],[[[9,3],6],[[2,10],7,9,[7,8,7,10,6]],10]]
+
+[[[0,5]],[[8,9,10,8]],[[[2,9,6],7,0,3],0,[[7,4],[5,7,0,10],[]]],[[3,9,[7,1,2,6],9,7],[[],10]]]
+[[6,[9,[6,1],[6,3,8]]],[9,[]],[[[3,3,7,4,7]],[]],[[[]],[[],7,[10,3]],10,7],[[],7]]
+
+[[[[1,3,7],[],1],5,2,[1,[10,3,7]]],[[8,7],9],[[[3,9,0,8,2],[6],0,[7,4,10]],[6,0,3,1,[6,9]]],[10,7,1,10],[0,[[1],9,7,[7,7,5,4],2],[],[[5,1,9],7,7,9]]]
+[[5],[9,3,[1,10],7],[[6,6,[3],3,[0,2,2,8,7]]],[7]]
+
+[[[4,[7,6],9,7],1,[],7,6]]
+[[8,[[5,6],[6,4,3,9]],7,10,[3,[],9,[6,5,4]]]]
+
+[[4,2,1,[[4],8,[7,4,0,8]],10],[],[[[7,3,5]],[7,5,1,[7,2,4],[6]],[4,[1],1],[7,[10,10,10,6],[9,2,0]],[[5,1,9,3,5],[3,10,4,9,8]]],[[],6,3],[6]]
+[[],[[],[0]],[[2,5,[1,4],6],1,4,[3,[],[10],[2,7,8,4,2]]],[[10],7],[[[4,10,6,3],7,[],1],2,3,3]]
+
+[[6,0,7]]
+[[5,2,[4],[[3,0,8,10],0,[4,8,9]]],[[],[[8,9,7,5,3],4,6],7,10,[[5,6],[2,10,5],[9,5,6,0],1,1]],[2,3,[7,10],9,1],[]]
+
+[[4,[2,[],7]]]
+[[[6,9,6,[3,6,7,2,3]],4,[1,2,5],6,4],[9,[1],[8,[7]],2],[[[1,3,6,3,6]],0,[],[]],[0,[[9,10]],5,[2],9],[[[3,1],[10,1],[5,0,9]]]]
+
+[[5],[2,[[]],9,[[]]],[1,5,[]]]
+[[[0]],[3,1],[10,6],[]]
+
+[]
+[[[7]],[[1,[4,10,9,2]],8,[10,[7],[2,1,1,4],2,10]],[],[[[10,6,4,7],7],[],4,8,9]]
+
+[[6,[[6,0,10,7,9],0,[5,1,2]],2],[[[3,1,6,1],7,[],5,4],[[10,10,3],0],8],[],[[[6,7,0,1,5],5,5,[3,7,2]],[6],7,3,1],[10]]
+[[],[[[],[1,2,10,9,5]],[[5,7],[7,4,9,9,0]],10]]
+
+[[9,4,8,[],8],[[3,[6],0,[3,1,10,9,2]]],[],[8,0,3,4]]
+[[1,1,0],[3],[[[9,1],5,[7]],7,10,[5,[2,4,2,6],6],[[2,2],[6,0,2,0],[3,4,1,3,0]]],[8,[]]]
+
+[[9,5],[[[],8,[0,9],[],0]],[[],7],[3],[10,9,6]]
+[[8,[0,[9,5,0]],[],4,1],[]]
+
+[9,10,2,8,0]
+[9,10,2,8]
+
+[[6,4,[9,5]],[[[10]],[[4,2,2,5],0,[3,2,1,10],5,[10,1]],0,9]]
+[[7,[8,[0,1],4,0],[7,[5,1,9,4],10]],[[10,[0,7,8,5,9]],[10,6,[3,9]]]]
+
+[[3,0,1,2]]
+[[[[5,2]],5,9],[],[[[9,6,5,8],[1],[],[],1]],[[[],[3,5],9,[],8],4,[[9,6,8,9,3],9,10,[0,8,1],[]],8,[[],7,[7,5],8,2]]]
+
+[[[[4,4]]],[8],[6,2,[8,9],2]]
+[[],[9,[[],2,3],[6]],[[[10,2,9,0]],8,10,0,10]]
+
+[[7],[[4,4,5,8,5],[9,[9,9]]],[[[4,4,1,5,6]],10],[[],[[0,0,2,10]],[[6,9,8,5,6]]],[[[],0,[3,7,1,6,6],[0,7,8,6],[9,7]],7,[2,[9,2]]]]
+[[8,7,[7,[],4]],[1,[[4,0,8,7],3],[7,[7,8,1,2],10,6],8,[[3,7,10,7]]],[2,0]]
+
+[[[[3,9,2],[7,2,9,10],4,[6],9],9,[[6,0,9,10,5]],[9,[10,5,7],5,6]],[],[9,4]]
+[[[[8,9,9,5]]],[[[4,8],2]]]
+
+[[[6,10,4],[],[7,[5],[0,9,1,4,3],8,8],[4,4,7],9],[[[3,7],3,[5,4,7,0],6],2],[[[7,1,6,0,4],[],[4],[9,0],1],[[8,3,9,6],9,[2,7,8]]],[]]
+[[]]
+
+[[],[7,6,[],[3,6,10,[9,7],4],[]],[4,9,8,[],2],[]]
+[[],[4,[9,1,10,9,6],4,0],[[],[[],[10,7]],[[6,5],5,[3,2,6,3]],[2,3,10,10],[]],[9,[2,9]],[[5],10]]
+
+[[[[2,2,9,8],[5,2,8,5,5],[5,9,5,9],4,2],7,[],[9,[2,7,9,7]],2],[],[0,9,5],[[6],[3,[],[],0,2],5],[]]
+[[[1,[9,8,8,1],3,10,[7,10,2,7]]],[[],[],[[],[10,10,4],10],10],[8,9,0,4],[],[1]]
+
+[[[7,[0,6,8],6],[[10,4,5,1,10]],[],4,7],[[[5,9],[4,4],5,2],2,2,[[7,10,3,7,9],10,6],2]]
+[[],[]]
+
+[[[5,[6],[7,9,4,0]],[[4,4],[],5,[6]],[7,[5,6,9,9],6],[]]]
+[[],[],[2,10,[],[[]]],[[8,7,[8],1,1]]]
+
+[[],[[7,0,[1,10,5,2,1],[2],[]],[[2,9,3,3],[10,9,3]],[[2],8,1]]]
+[[[[5,8,6,5]],2,[3,8,10,9,0],[[5,9,1,4],[7,7],9],7]]
+
+[[5,3],[10,5],[]]
+[[6,10,[],[[8]],[[],0,[]]],[],[],[],[]]
+
+[[5,[7,[5],[6,3,10],9,3],3],[[[7,0,0,1],9,[1,4],3,[0,5,8,7,7]],1,[2,[1],[3]],4,7],[[1,10,4,1,[10,3,3,8]],3,[[6,5],[1,4]]],[3,[[7],[2,3,3,5,3],[4,2],[8,7,9,1,10]],[[9,10,7]],10],[[[2]],7,5]]
+[[4,7],[[10,[2,4]],[8,1,9],9],[[4],8,[],9,5],[[5,[1,0,1,1,8]],[[5,2,4],[],[],8],8,[[4,4,6,10,4]]]]
+
+[[8,1],[[[5],9],9,[]]]
+[[9,[],3,3],[[[10,3,4,1],6,7,[9]],10,5,2],[[0,3,8],9,4,[8,7],[]],[4,4]]
+
+[[3],[7]]
+[[1],[4,3],[6,[1],[[5],3,[]]],[0],[2]]
+
+[[[9,4,8],[[8,8,10],[4,6],10,10],3,6],[[[1,4],4,[],[8,3],[0,0,5]],[0,[0],4,[1,9,2,6,0],5],[4]],[[2],[0],7,6,[]]]
+[[[[],[9,4,7],[9,1],5,[3,4,9]],[8]],[1,[],[[0,4]],[6,1,9],2],[],[[6]]]
+
+[[[[],10,8],[6,[],7,[7,6],[10,8]],[[],8,9]],[]]
+[[6],[[]]]
+
+[[],[7,[[0,4],[],5,1],[[8,1,7,0],0,[4,3],5],[3,[],[3,9,3],[0,4,5,2],6]],[[[5,2,0],[8],[3,10,9,3,5],[],[0,5]],5,0,[],4]]
+[[[[],5],[9,[5,7,8],5,[],[5,2,2,10]]],[[9],[1,5,0]]]
+
+[[[],[4,0,[1,7],3,7],8],[5,[],3,7,[[8,9]]],[[],[7],[[3],0]]]
+[[3,8,5,[[9,10,5,5],[0,1],[2]],7],[1,1,9,4],[[[4,8,9,0],[],[],[5]]],[[],[],1,8,5],[]]
+
+[[5,[1,0,[9]],[[1,8,10,10,1],[],[0],[4,10,9,8,5],7]],[[6,3,2,0],[6],9,[9,7,[1,0,0],5]]]
+[[10,5,1,4],[6,0,[]]]
+
+[[[3,9],5,[[0],[6]],[[9,9,3],[],8],5],[],[]]
+[[8,8,4,[],[[9,9,7,3,8],[4,6,8,7,8],[10],2,7]],[10,0,1,[[3,10],[6,2,10,3]]],[3,6],[],[[],4]]
+
+[[],[9],[2,9,[[],[5,1,0,2,1],[9,10],0],[[7,3],5,10],2],[[9,[9],3],[4,[10,2,10],[0,2]],1,[2,4,[4,1,7,1,0],[],[1,0,1]],[10,[1,4,5],9]]]
+[[[[],[9,1,3],[5,0,1,7],7]]]
+
+[[[[0,5,10],[7,8],[0,5],[7,10,1]]],[[2,10,[3],[5,4],[8,9,0,1,6]],0],[]]
+[[6,[8,4,4,[10,9,4,2,9]],4,[5,1]],[1,6,5,[],[10,[7,3,10,6],[0,2]]],[4,[2,5],[3,[7,7,2,10,5],3,[0,4]],[2,9,2,[]],[2,[1],1,[6,6,5,5]]],[4,[],10,[[2,7,0,4,8]],[0,2]],[[[8,10],[7,9]],[10,5,[6,5,8,2],0,[10,8,2,9]],8]]
+
+[[[3,9,[],[4,1,6],6],8,[[3,8,1,3,10]],[]],[5],[],[]]
+[[3,10,[]],[[9,[1,8],2,[4,3,6],7],3],[0,[[9,0,7],3,9,8,[]],5,[[],[10,5,7]],[[4,3,3,6],10,[3,9,0,6]]],[[2,[4],[5]],10,[6],6,2]]
+
+[[[[4,0,8],[4,3,8,10]],8,10,[10,0,3]],[[],0,7,5],[2,[[],[1,6,9,2],4,[8,2,6]],6,[6,[10,0]],[[],[4],[5,6]]],[]]
+[[5,[[]],2,2],[[[10,4,7,9],10,8,[]],9,5],[[[10,10,8],2,[8,7,1,2],8],1]]
+
+[[5,4,3],[4,[8],1,[[]],[]],[[]],[4,[],[[1,5,5],[]]],[6,6,8,9]]
+[[[5,[10,7,7,6],5,7],6,6,4,10]]
+
+[[2,[[]],[6,[0]],[[3,7,5,2,1],0,[9,6]],[]],[[[4,9,6]],3,8]]
+[[[]],[2],[[[4,6],[6,4,10,7],10,[4,5,10]],7,[4,7,[9,1,3],8]],[[9,5,7,[],9],[8],[],7,[[1,1,7,2]]]]
+
+[[],[[[7,6,1,0],6,7,7]],[6],[[],6]]
+[[],[],[[],[[]],[[8,5],9,[2],8,5],4]]
+
+[[1,2,[9,[7,5,1,0,9],[8,7,2],0,[4,10,10,7]],9],[9,[],[[0,8,10]],10]]
+[[5,[[10,7,3,0,9],[0,6,4],[9,10,0]]],[1]]
+
+[[[],3],[[0,[6,10,6,3,10],[3,7,6,0,5],10,1]],[5],[[]],[10,0,[],8]]
+[[[9,[5,10,6],7,0],8,[6,6,[2,0,9,5,1]],[[],3,[10],7],7],[[[2,3,9],[2,6,9],[10,2],[]],[2,[0,6,9],[8,5,4]],[4,[4,8,6,4],[1,1,1,4,8],10,1],4,[5,1,[]]]]
+
+[[[],[]],[[[10,4,6]],[[2],4,[1,1,3]],[7,9,[3,3,10,5]]]]
+[[0,6,0,[10,6],10],[7,10]]
+
+[[[],[2,[8,3],[3,5,9,9]],[8,[8,9,2],2,[4]]]]
+[[7,6,[[5,2,8,5,0],[5,2,5,5,7]],4,6],[[9,2,5],[],7],[6]]
+
+[[5,0]]
+[[[2,[3,5,6,6],9,[6,8,8,7,2],0],1,2,7,[0,2]],[4],[9,0,4]]
+
+[[[[4],0,[4,6],5],[],[3,4]],[1,7,[8],6],[[1,0,[],[2,1,7,5,7],7],[6,10],[],6,[8,[9,9,9,5],2,1]],[7,[],5,[]],[7,[]]]
+[[[4,1,[10,0]]]]
+
+[[1,[],2,6,[[6,10,2,4]]],[],[4,5,0]]
+[[[],8,10],[[5,[10,9],0],10,8,3],[[[5],8],0],[]]
+
+[[0,10],[[[4,6]],[]],[10,0],[],[6]]
+[[6,0],[[],8],[3,[8,[3,4,10],9,[6,5,10,5,9]],4,[2,[6,3],8],[10,[2,6,2],[0,4],[4],6]],[[[],[8,1]],8,5,8,3],[3,2]]
+
+[[[],6,[[9,3,0],[2,2,10],9,8,[]]]]
+[[[5,0],[0,4,8,[7]]],[[[4],2,4,[1],[3,7,0,6,7]]]]
+
+[[[[7],2],[[8,9]],[],4,10],[[0,[9,0,7]],[[2,9],10]],[]]
+[[[],4,[0,3,0],5],[7,0],[2,8,[6,[3,8,10,3]],5],[],[[3,[10,9],[1,6]],4,8,[[],7,[2,6,10,9],9,[8,6,3]],1]]
+
+[[[[0,8,6,9]],0,4],[[8,6,5,4],8],[7,[[],[10,0,9,5,9],0,6]],[10,1,3,[[8,9,9,8],[0,10,7],[2,10,9,2,10],4,2]]]
+[[3,[]],[1,0,10,4,[[2,1,9,1],[]]],[0,[[],[9,1,1],1,[10,7,7,2,1]],5],[[[8,3,4,8],7,4,8,[7,4,9,1]],[5,[0,6,10],[]],[],8],[[9,0,[10,5],1],6,[5,[1,4,1,0,8],[5,10]],7]]
+
+[[1],[3,[[],[6],[1,6,2,9,8],[10,3,3,5]]]]
+[[[3,[4,9,8,5,0]],[[3,2],[],[9,1,3,7,7]],[7,[],[7],4],[]],[2],[6,5,6,[]],[[2,[6],[6,7]],7,8],[5,[[7,6,8,6,9],[]]]]
+
+[[[10,[],2,3,[]],[[]],[7,[],[5,10,7,1],2],[4,[3,7,2,1,2],[7,8,4,0]],[7]],[[],[[6,3],6,[5,7,7,4],[1,7,3,4,0],6],5,1,9],[[6,[7,0,4,10,8],6,[7,7,10],[1,7]],6,3,10]]
+[[],[2],[[0,4,[6,6,10,8,4],[7,8,10,1],0],[[9,6,8,0,10],1,[2,5,2,10,1],10,8],3,10]]
+
+[[],[],[],[[[4,0,10,8,2]]],[[],10,3,2,[[],7]]]
+[[[[6,6,4,4,4],[1,4],9],[9],[[3,7,0],[10,8,10],6,[6]],7,[]],[]]
+
+[[[[5,0,4],[9,2,7,0],[4,4],2,6],4,7],[[[0,4,9],[5,9,1,1,5],[]]],[7]]
+[[[[8,5,9,4,8],4]],[],[[[9,1,4,9],0,2],10],[2,[6,2,9,[3,4,10,2],[5,8]],[[6,5,6,6,9],[3,2,6,3,5]],[[],7,[8,3,8,7,4]]]]
+
+[[5,[],5],[[5],9,[8,[3,6],[10,5,7],10,2],[],[]]]
+[[0,[[7,10],[7,2,6,5,2]]],[],[[[7,6],[],0],2,[[2,5,3]],0,[5,[8,7,1,3,1],5]]]
+
+[[[10,9,[],6]],[5,3],[3,5,10,[[1],[7,5,8,7,4],[4,4,2]]],[[4,[7],1,[10],[3,8,1]],[[],[10,0,10],[7,4,2],[5,6,1,4]],[[10,4,5],[2]],[4,[5,2,5,8],2]]]
+[[[],[[6,1,9],5,[8,2,8],[5,5]],5],[10,[[10,5,8,10],10],[[3,8,1,6,0],3,8],7],[6,[5,[3,7,3,0],6,0,[0,6]],10,6]]
+
+[[],[[[7]],7,5],[[[8,3,0],[9,8]],3,3,[[3,1,8,1,9],10]],[[[9,4,4,7],[3,0,7,1],[6,2,9,4],[0,2,3,8],[]],[8,1,[8,6]],0,[],[[10]]],[2]]
+[[2,[[2,6,10],[],7]],[[9,8,2,[10,10]],3,0,[6,0,1,3],[]],[[],9,10],[[6,10,[0,1,6,8],6,[7,5,10,10]],[[10,4,2,5],9,[4],0,0],[[9,3,5],[],[7],6,[10,0,4,7,6]],[[8,6],10,6],[]]]
+
+[[[3],[5,9,1,10,[8]],6,4],[[[],8,4,2],1,[10,[1,10,10],10],8],[0,[],[[6,2,1,10],4],7],[0,3,[10,[9,4,4],0,4,[1]]]]
+[[],[[9,[1],[],[]]],[6],[6,[5,[8,5,5]],[9,9,[6],[8,3,7,5]],[9,[5],4,9,[10,7,8,9,4]],4],[[[4],[9,1,8],7,8,[4,2,10,10,1]],[8,7,[],10]]]
+
+[[],[8,9,3,5]]
+[[10,[[5,5,1,6],[],5],8,[6],6],[]]
+
+[[10,2,[],[[]]],[2,[6,8,[10,4,1,7],3],[4,2,[9,1,3,6]]],[[]],[[2,9,[4,2,10,7],8],[10,[7,1]]]]
+[[[6,7,[4,0]]],[[[5,7,5,10]]],[10,5,[[5,4,3,5,6]],10,[]]]
+
+[[10],[],[[[6]]],[],[[6,[7,4,5,4,8],[],[2,0,9,5,3],2],[[8]],[0,10,2,[1,0]]]]
+[[[1,10,[5,6]],[[10,3,3,1,10],3,2],[[7,4],6],[],[]],[10,[[2,9,2,5],2,[6,6,10,8],2,8]]]
+
+[[[],[3],[[8,6,5,2,2],8,[9,3,1,1],[0,4,9,10]],4]]
+[[],[[9],7,10]]
+
+[[[[7,6,10],6,6],[9],[1],7],[3,9],[7,[4,4]],[1,[4,3],[[5,7,9,4],8,[0,10,5],[4,1,10,6,3],[7]],[[]],[7,10,[4,4,6,5,10],9,[7,0,10,7]]],[[]]]
+[[],[[[6],3,[]],[[3,6],10],9],[[[3,4,0,3],5,3,9]],[0,10,9],[3]]
+
+[[5,0,[6]],[[[],2],[[5],2,[5,8,2],[2,8,3,9,1],[7]]],[10,[4,[4,7,3,9,2],7,[6,0,0,7,2],0],[10,[10,4,3,7],1,10]],[3,[[9,10,9],[8,1,4],6,[],5],[8,[6,1],[6,2]],[[5,9],8,5],[[8],[6,9,6],7]]]
+[[7,8],[[[6,5,8,0,7],[1,2],[4,6,4]],[],[[],8,10]]]
+
+[[[[10,5],3,[5,2,2,6,3]]]]
+[[10,[[5,0],4,1,[0],[5,8,0]]],[8,0,10,4],[1,8,[9,[7,8,8],4,[5,0,6,0],0]],[[],6],[6]]
+
+[[[0,0,5,10,[9,10,0,5,8]]],[0,9,[[],[2,9,5,2],[7,7]]]]
+[[[10,0,5,4,[]],8,5,8],[[10,4,[7,5,3]],9,4]]
+
+[[4,5,10],[7,9],[2,[2,[3],[5,5,2]],5,2]]
+[[10,1,[[5,3,6],1,7,[1],[7,9,8,5]],6,10],[6,5,[5,9]],[],[[6,1],8,3]]
+
+[[6,[3,4,4],[],[8,[7,6,1,10],7,[4,6,1,4],3]],[10],[[0]],[[8,3,[8,4,4,8],8]]]
+[[[10],[[5],3],1,4,0],[[1],2]]
+
+[[5,2],[3,8,[]],[[[5,8]],5,2,9],[[5,1,6,[0,6,10,4,10]]]]
+[[[[5,2,10,8],3],[[1]]],[0,[0],[3,[10,2,0,2],[]],[10,[8,2,7]],0],[[7,[5,2,0,7,8],[9,6,5,0],10],[[10,5],[4,4,9,6],[],4,6],0,[],9],[0,[[],[10,10],3],5],[[[10,10,3],[],[8,2,3],5,[2,1,9]]]]
+
+[[4,2],[],[8,9,[],1],[],[]]
+[[0,[10,[1,10,5],[3,2,6,7],5],[[7,3,10],6,8,[6,8,8,4,2],7],9],[0,2]]
+
+[[[0,[],8],[[8,7,4],10,8,9],0,[2,6,[3,2,9,7],6]],[0,[0,5,6]],[2],[[[0,4,1,2,9],5,[3]],[[6,10,7,8,9],0,[1,4,6],[9,4,10,9]],[[],1]]]
+[[3,[]],[[0,3],[8,[4,5,7,10,5]],10,[],[4]]]
+
+[[[]],[],[[],[]],[],[]]
+[[[8],[9,[10,4,0,9],2,6]],[0,[6,5,[4,5,10,8,2]],6],[8],[7],[10,[8]]]
+
+[[],[4,[[4,7,0,5,3],2,[7,6,5,1]],8],[]]
+[[[[2,2,3,7],0,[6,3],[5]],[8]],[[[10,5,5,10,2],0,8,[5]],[],[[8,10,1,10],1,[4],[1,8,1,8],1],10,[[10]]],[2,6,[[]],3,[8,[0],[0,0,0,9]]]]
+
+[[5],[[[5,1,1],[1,2,10],5,10],2,[[3],[],3],10,[1]],[]]
+[[7,5,7],[],[9,[6,4,8,[5,2,10,2],5],4],[],[3]]
+
+[[8,5,6,10,[8,[10],0,3]],[6],[[[]],[6,5,[0,4,9,1,9],[1,6,2]],[[4,7,2,7],1]]]
+[[8,[0,8,[8,4,4],[10,5],[10,10,1,2]],10],[1,10,[9,9,[10,1],7,6]]]
+
+[[[5,7],[4,[0,1,1,2,6]],[5],3],[]]
+[[4,[4,[6,6]]],[[[],[9,4,4,2,8]]],[[[7]],[3],[],[3]]]
+
+[[[4,4,[0,3],5],3,6],[[4,[2,9],1,[]],2,0,[]],[6],[8,[[]]]]
+[[10],[1,[8,[],10],3,9],[],[[5,7],7,8]]
+
+[[[],3,5,[[3,4,8,2]]],[3],[10,[[2,3],1,9,[],[7,9]],[[5,6],10,3,0,1]]]
+[[1],[5]]

inputs/day14.tt

@@ -0,0 +1,148 @@
+515,60 -> 515,52 -> 515,60 -> 517,60 -> 517,55 -> 517,60 -> 519,60 -> 519,50 -> 519,60 -> 521,60 -> 521,56 -> 521,60 -> 523,60 -> 523,53 -> 523,60 -> 525,60 -> 525,53 -> 525,60
+515,60 -> 515,52 -> 515,60 -> 517,60 -> 517,55 -> 517,60 -> 519,60 -> 519,50 -> 519,60 -> 521,60 -> 521,56 -> 521,60 -> 523,60 -> 523,53 -> 523,60 -> 525,60 -> 525,53 -> 525,60
+502,32 -> 507,32
+522,47 -> 522,43 -> 522,47 -> 524,47 -> 524,41 -> 524,47 -> 526,47 -> 526,39 -> 526,47 -> 528,47 -> 528,39 -> 528,47
+516,32 -> 521,32
+501,161 -> 501,152 -> 501,161 -> 503,161 -> 503,157 -> 503,161 -> 505,161 -> 505,155 -> 505,161 -> 507,161 -> 507,154 -> 507,161 -> 509,161 -> 509,155 -> 509,161
+512,30 -> 517,30
+522,47 -> 522,43 -> 522,47 -> 524,47 -> 524,41 -> 524,47 -> 526,47 -> 526,39 -> 526,47 -> 528,47 -> 528,39 -> 528,47
+522,84 -> 522,76 -> 522,84 -> 524,84 -> 524,75 -> 524,84 -> 526,84 -> 526,81 -> 526,84 -> 528,84 -> 528,74 -> 528,84 -> 530,84 -> 530,79 -> 530,84 -> 532,84 -> 532,77 -> 532,84 -> 534,84 -> 534,78 -> 534,84 -> 536,84 -> 536,80 -> 536,84
+522,84 -> 522,76 -> 522,84 -> 524,84 -> 524,75 -> 524,84 -> 526,84 -> 526,81 -> 526,84 -> 528,84 -> 528,74 -> 528,84 -> 530,84 -> 530,79 -> 530,84 -> 532,84 -> 532,77 -> 532,84 -> 534,84 -> 534,78 -> 534,84 -> 536,84 -> 536,80 -> 536,84
+520,130 -> 520,133 -> 515,133 -> 515,138 -> 533,138 -> 533,133 -> 525,133 -> 525,130
+506,34 -> 511,34
+529,112 -> 529,116 -> 526,116 -> 526,122 -> 541,122 -> 541,116 -> 535,116 -> 535,112
+498,13 -> 498,15 -> 492,15 -> 492,23 -> 506,23 -> 506,15 -> 501,15 -> 501,13
+522,84 -> 522,76 -> 522,84 -> 524,84 -> 524,75 -> 524,84 -> 526,84 -> 526,81 -> 526,84 -> 528,84 -> 528,74 -> 528,84 -> 530,84 -> 530,79 -> 530,84 -> 532,84 -> 532,77 -> 532,84 -> 534,84 -> 534,78 -> 534,84 -> 536,84 -> 536,80 -> 536,84
+523,63 -> 523,66 -> 515,66 -> 515,71 -> 529,71 -> 529,66 -> 528,66 -> 528,63
+501,161 -> 501,152 -> 501,161 -> 503,161 -> 503,157 -> 503,161 -> 505,161 -> 505,155 -> 505,161 -> 507,161 -> 507,154 -> 507,161 -> 509,161 -> 509,155 -> 509,161
+512,173 -> 517,173
+522,84 -> 522,76 -> 522,84 -> 524,84 -> 524,75 -> 524,84 -> 526,84 -> 526,81 -> 526,84 -> 528,84 -> 528,74 -> 528,84 -> 530,84 -> 530,79 -> 530,84 -> 532,84 -> 532,77 -> 532,84 -> 534,84 -> 534,78 -> 534,84 -> 536,84 -> 536,80 -> 536,84
+498,13 -> 498,15 -> 492,15 -> 492,23 -> 506,23 -> 506,15 -> 501,15 -> 501,13
+545,94 -> 550,94
+539,100 -> 544,100
+522,47 -> 522,43 -> 522,47 -> 524,47 -> 524,41 -> 524,47 -> 526,47 -> 526,39 -> 526,47 -> 528,47 -> 528,39 -> 528,47
+529,112 -> 529,116 -> 526,116 -> 526,122 -> 541,122 -> 541,116 -> 535,116 -> 535,112
+553,100 -> 558,100
+501,170 -> 506,170
+515,60 -> 515,52 -> 515,60 -> 517,60 -> 517,55 -> 517,60 -> 519,60 -> 519,50 -> 519,60 -> 521,60 -> 521,56 -> 521,60 -> 523,60 -> 523,53 -> 523,60 -> 525,60 -> 525,53 -> 525,60
+498,13 -> 498,15 -> 492,15 -> 492,23 -> 506,23 -> 506,15 -> 501,15 -> 501,13
+522,84 -> 522,76 -> 522,84 -> 524,84 -> 524,75 -> 524,84 -> 526,84 -> 526,81 -> 526,84 -> 528,84 -> 528,74 -> 528,84 -> 530,84 -> 530,79 -> 530,84 -> 532,84 -> 532,77 -> 532,84 -> 534,84 -> 534,78 -> 534,84 -> 536,84 -> 536,80 -> 536,84
+515,60 -> 515,52 -> 515,60 -> 517,60 -> 517,55 -> 517,60 -> 519,60 -> 519,50 -> 519,60 -> 521,60 -> 521,56 -> 521,60 -> 523,60 -> 523,53 -> 523,60 -> 525,60 -> 525,53 -> 525,60
+498,13 -> 498,15 -> 492,15 -> 492,23 -> 506,23 -> 506,15 -> 501,15 -> 501,13
+522,84 -> 522,76 -> 522,84 -> 524,84 -> 524,75 -> 524,84 -> 526,84 -> 526,81 -> 526,84 -> 528,84 -> 528,74 -> 528,84 -> 530,84 -> 530,79 -> 530,84 -> 532,84 -> 532,77 -> 532,84 -> 534,84 -> 534,78 -> 534,84 -> 536,84 -> 536,80 -> 536,84
+522,84 -> 522,76 -> 522,84 -> 524,84 -> 524,75 -> 524,84 -> 526,84 -> 526,81 -> 526,84 -> 528,84 -> 528,74 -> 528,84 -> 530,84 -> 530,79 -> 530,84 -> 532,84 -> 532,77 -> 532,84 -> 534,84 -> 534,78 -> 534,84 -> 536,84 -> 536,80 -> 536,84
+522,84 -> 522,76 -> 522,84 -> 524,84 -> 524,75 -> 524,84 -> 526,84 -> 526,81 -> 526,84 -> 528,84 -> 528,74 -> 528,84 -> 530,84 -> 530,79 -> 530,84 -> 532,84 -> 532,77 -> 532,84 -> 534,84 -> 534,78 -> 534,84 -> 536,84 -> 536,80 -> 536,84
+546,100 -> 551,100
+522,84 -> 522,76 -> 522,84 -> 524,84 -> 524,75 -> 524,84 -> 526,84 -> 526,81 -> 526,84 -> 528,84 -> 528,74 -> 528,84 -> 530,84 -> 530,79 -> 530,84 -> 532,84 -> 532,77 -> 532,84 -> 534,84 -> 534,78 -> 534,84 -> 536,84 -> 536,80 -> 536,84
+542,97 -> 547,97
+522,84 -> 522,76 -> 522,84 -> 524,84 -> 524,75 -> 524,84 -> 526,84 -> 526,81 -> 526,84 -> 528,84 -> 528,74 -> 528,84 -> 530,84 -> 530,79 -> 530,84 -> 532,84 -> 532,77 -> 532,84 -> 534,84 -> 534,78 -> 534,84 -> 536,84 -> 536,80 -> 536,84
+535,97 -> 540,97
+533,108 -> 533,109 -> 538,109 -> 538,108
+522,47 -> 522,43 -> 522,47 -> 524,47 -> 524,41 -> 524,47 -> 526,47 -> 526,39 -> 526,47 -> 528,47 -> 528,39 -> 528,47
+509,32 -> 514,32
+513,34 -> 518,34
+515,60 -> 515,52 -> 515,60 -> 517,60 -> 517,55 -> 517,60 -> 519,60 -> 519,50 -> 519,60 -> 521,60 -> 521,56 -> 521,60 -> 523,60 -> 523,53 -> 523,60 -> 525,60 -> 525,53 -> 525,60
+520,130 -> 520,133 -> 515,133 -> 515,138 -> 533,138 -> 533,133 -> 525,133 -> 525,130
+507,164 -> 512,164
+501,161 -> 501,152 -> 501,161 -> 503,161 -> 503,157 -> 503,161 -> 505,161 -> 505,155 -> 505,161 -> 507,161 -> 507,154 -> 507,161 -> 509,161 -> 509,155 -> 509,161
+501,161 -> 501,152 -> 501,161 -> 503,161 -> 503,157 -> 503,161 -> 505,161 -> 505,155 -> 505,161 -> 507,161 -> 507,154 -> 507,161 -> 509,161 -> 509,155 -> 509,161
+557,103 -> 562,103
+538,94 -> 543,94
+515,60 -> 515,52 -> 515,60 -> 517,60 -> 517,55 -> 517,60 -> 519,60 -> 519,50 -> 519,60 -> 521,60 -> 521,56 -> 521,60 -> 523,60 -> 523,53 -> 523,60 -> 525,60 -> 525,53 -> 525,60
+522,84 -> 522,76 -> 522,84 -> 524,84 -> 524,75 -> 524,84 -> 526,84 -> 526,81 -> 526,84 -> 528,84 -> 528,74 -> 528,84 -> 530,84 -> 530,79 -> 530,84 -> 532,84 -> 532,77 -> 532,84 -> 534,84 -> 534,78 -> 534,84 -> 536,84 -> 536,80 -> 536,84
+520,130 -> 520,133 -> 515,133 -> 515,138 -> 533,138 -> 533,133 -> 525,133 -> 525,130
+520,130 -> 520,133 -> 515,133 -> 515,138 -> 533,138 -> 533,133 -> 525,133 -> 525,130
+498,13 -> 498,15 -> 492,15 -> 492,23 -> 506,23 -> 506,15 -> 501,15 -> 501,13
+522,84 -> 522,76 -> 522,84 -> 524,84 -> 524,75 -> 524,84 -> 526,84 -> 526,81 -> 526,84 -> 528,84 -> 528,74 -> 528,84 -> 530,84 -> 530,79 -> 530,84 -> 532,84 -> 532,77 -> 532,84 -> 534,84 -> 534,78 -> 534,84 -> 536,84 -> 536,80 -> 536,84
+523,63 -> 523,66 -> 515,66 -> 515,71 -> 529,71 -> 529,66 -> 528,66 -> 528,63
+501,28 -> 506,28
+505,173 -> 510,173
+531,87 -> 531,88 -> 543,88
+515,60 -> 515,52 -> 515,60 -> 517,60 -> 517,55 -> 517,60 -> 519,60 -> 519,50 -> 519,60 -> 521,60 -> 521,56 -> 521,60 -> 523,60 -> 523,53 -> 523,60 -> 525,60 -> 525,53 -> 525,60
+522,84 -> 522,76 -> 522,84 -> 524,84 -> 524,75 -> 524,84 -> 526,84 -> 526,81 -> 526,84 -> 528,84 -> 528,74 -> 528,84 -> 530,84 -> 530,79 -> 530,84 -> 532,84 -> 532,77 -> 532,84 -> 534,84 -> 534,78 -> 534,84 -> 536,84 -> 536,80 -> 536,84
+520,130 -> 520,133 -> 515,133 -> 515,138 -> 533,138 -> 533,133 -> 525,133 -> 525,130
+522,84 -> 522,76 -> 522,84 -> 524,84 -> 524,75 -> 524,84 -> 526,84 -> 526,81 -> 526,84 -> 528,84 -> 528,74 -> 528,84 -> 530,84 -> 530,79 -> 530,84 -> 532,84 -> 532,77 -> 532,84 -> 534,84 -> 534,78 -> 534,84 -> 536,84 -> 536,80 -> 536,84
+522,84 -> 522,76 -> 522,84 -> 524,84 -> 524,75 -> 524,84 -> 526,84 -> 526,81 -> 526,84 -> 528,84 -> 528,74 -> 528,84 -> 530,84 -> 530,79 -> 530,84 -> 532,84 -> 532,77 -> 532,84 -> 534,84 -> 534,78 -> 534,84 -> 536,84 -> 536,80 -> 536,84
+524,126 -> 524,127 -> 528,127 -> 528,126
+515,60 -> 515,52 -> 515,60 -> 517,60 -> 517,55 -> 517,60 -> 519,60 -> 519,50 -> 519,60 -> 521,60 -> 521,56 -> 521,60 -> 523,60 -> 523,53 -> 523,60 -> 525,60 -> 525,53 -> 525,60
+522,84 -> 522,76 -> 522,84 -> 524,84 -> 524,75 -> 524,84 -> 526,84 -> 526,81 -> 526,84 -> 528,84 -> 528,74 -> 528,84 -> 530,84 -> 530,79 -> 530,84 -> 532,84 -> 532,77 -> 532,84 -> 534,84 -> 534,78 -> 534,84 -> 536,84 -> 536,80 -> 536,84
+501,161 -> 501,152 -> 501,161 -> 503,161 -> 503,157 -> 503,161 -> 505,161 -> 505,155 -> 505,161 -> 507,161 -> 507,154 -> 507,161 -> 509,161 -> 509,155 -> 509,161
+523,63 -> 523,66 -> 515,66 -> 515,71 -> 529,71 -> 529,66 -> 528,66 -> 528,63
+508,28 -> 513,28
+501,161 -> 501,152 -> 501,161 -> 503,161 -> 503,157 -> 503,161 -> 505,161 -> 505,155 -> 505,161 -> 507,161 -> 507,154 -> 507,161 -> 509,161 -> 509,155 -> 509,161
+523,63 -> 523,66 -> 515,66 -> 515,71 -> 529,71 -> 529,66 -> 528,66 -> 528,63
+511,167 -> 516,167
+549,97 -> 554,97
+541,91 -> 546,91
+522,47 -> 522,43 -> 522,47 -> 524,47 -> 524,41 -> 524,47 -> 526,47 -> 526,39 -> 526,47 -> 528,47 -> 528,39 -> 528,47
+522,47 -> 522,43 -> 522,47 -> 524,47 -> 524,41 -> 524,47 -> 526,47 -> 526,39 -> 526,47 -> 528,47 -> 528,39 -> 528,47
+520,34 -> 525,34
+522,47 -> 522,43 -> 522,47 -> 524,47 -> 524,41 -> 524,47 -> 526,47 -> 526,39 -> 526,47 -> 528,47 -> 528,39 -> 528,47
+515,60 -> 515,52 -> 515,60 -> 517,60 -> 517,55 -> 517,60 -> 519,60 -> 519,50 -> 519,60 -> 521,60 -> 521,56 -> 521,60 -> 523,60 -> 523,53 -> 523,60 -> 525,60 -> 525,53 -> 525,60
+501,161 -> 501,152 -> 501,161 -> 503,161 -> 503,157 -> 503,161 -> 505,161 -> 505,155 -> 505,161 -> 507,161 -> 507,154 -> 507,161 -> 509,161 -> 509,155 -> 509,161
+522,47 -> 522,43 -> 522,47 -> 524,47 -> 524,41 -> 524,47 -> 526,47 -> 526,39 -> 526,47 -> 528,47 -> 528,39 -> 528,47
+501,161 -> 501,152 -> 501,161 -> 503,161 -> 503,157 -> 503,161 -> 505,161 -> 505,155 -> 505,161 -> 507,161 -> 507,154 -> 507,161 -> 509,161 -> 509,155 -> 509,161
+505,30 -> 510,30
+543,103 -> 548,103
+510,146 -> 515,146
+522,84 -> 522,76 -> 522,84 -> 524,84 -> 524,75 -> 524,84 -> 526,84 -> 526,81 -> 526,84 -> 528,84 -> 528,74 -> 528,84 -> 530,84 -> 530,79 -> 530,84 -> 532,84 -> 532,77 -> 532,84 -> 534,84 -> 534,78 -> 534,84 -> 536,84 -> 536,80 -> 536,84
+498,173 -> 503,173
+498,13 -> 498,15 -> 492,15 -> 492,23 -> 506,23 -> 506,15 -> 501,15 -> 501,13
+501,161 -> 501,152 -> 501,161 -> 503,161 -> 503,157 -> 503,161 -> 505,161 -> 505,155 -> 505,161 -> 507,161 -> 507,154 -> 507,161 -> 509,161 -> 509,155 -> 509,161
+523,63 -> 523,66 -> 515,66 -> 515,71 -> 529,71 -> 529,66 -> 528,66 -> 528,63
+515,60 -> 515,52 -> 515,60 -> 517,60 -> 517,55 -> 517,60 -> 519,60 -> 519,50 -> 519,60 -> 521,60 -> 521,56 -> 521,60 -> 523,60 -> 523,53 -> 523,60 -> 525,60 -> 525,53 -> 525,60
+522,47 -> 522,43 -> 522,47 -> 524,47 -> 524,41 -> 524,47 -> 526,47 -> 526,39 -> 526,47 -> 528,47 -> 528,39 -> 528,47
+498,13 -> 498,15 -> 492,15 -> 492,23 -> 506,23 -> 506,15 -> 501,15 -> 501,13
+515,60 -> 515,52 -> 515,60 -> 517,60 -> 517,55 -> 517,60 -> 519,60 -> 519,50 -> 519,60 -> 521,60 -> 521,56 -> 521,60 -> 523,60 -> 523,53 -> 523,60 -> 525,60 -> 525,53 -> 525,60
+533,108 -> 533,109 -> 538,109 -> 538,108
+517,146 -> 522,146
+515,60 -> 515,52 -> 515,60 -> 517,60 -> 517,55 -> 517,60 -> 519,60 -> 519,50 -> 519,60 -> 521,60 -> 521,56 -> 521,60 -> 523,60 -> 523,53 -> 523,60 -> 525,60 -> 525,53 -> 525,60
+501,161 -> 501,152 -> 501,161 -> 503,161 -> 503,157 -> 503,161 -> 505,161 -> 505,155 -> 505,161 -> 507,161 -> 507,154 -> 507,161 -> 509,161 -> 509,155 -> 509,161
+513,144 -> 518,144
+515,170 -> 520,170
+501,161 -> 501,152 -> 501,161 -> 503,161 -> 503,157 -> 503,161 -> 505,161 -> 505,155 -> 505,161 -> 507,161 -> 507,154 -> 507,161 -> 509,161 -> 509,155 -> 509,161
+520,130 -> 520,133 -> 515,133 -> 515,138 -> 533,138 -> 533,133 -> 525,133 -> 525,130
+515,60 -> 515,52 -> 515,60 -> 517,60 -> 517,55 -> 517,60 -> 519,60 -> 519,50 -> 519,60 -> 521,60 -> 521,56 -> 521,60 -> 523,60 -> 523,53 -> 523,60 -> 525,60 -> 525,53 -> 525,60
+523,63 -> 523,66 -> 515,66 -> 515,71 -> 529,71 -> 529,66 -> 528,66 -> 528,63
+522,84 -> 522,76 -> 522,84 -> 524,84 -> 524,75 -> 524,84 -> 526,84 -> 526,81 -> 526,84 -> 528,84 -> 528,74 -> 528,84 -> 530,84 -> 530,79 -> 530,84 -> 532,84 -> 532,77 -> 532,84 -> 534,84 -> 534,78 -> 534,84 -> 536,84 -> 536,80 -> 536,84
+519,173 -> 524,173
+532,100 -> 537,100
+524,126 -> 524,127 -> 528,127 -> 528,126
+522,84 -> 522,76 -> 522,84 -> 524,84 -> 524,75 -> 524,84 -> 526,84 -> 526,81 -> 526,84 -> 528,84 -> 528,74 -> 528,84 -> 530,84 -> 530,79 -> 530,84 -> 532,84 -> 532,77 -> 532,84 -> 534,84 -> 534,78 -> 534,84 -> 536,84 -> 536,80 -> 536,84
+522,84 -> 522,76 -> 522,84 -> 524,84 -> 524,75 -> 524,84 -> 526,84 -> 526,81 -> 526,84 -> 528,84 -> 528,74 -> 528,84 -> 530,84 -> 530,79 -> 530,84 -> 532,84 -> 532,77 -> 532,84 -> 534,84 -> 534,78 -> 534,84 -> 536,84 -> 536,80 -> 536,84
+529,112 -> 529,116 -> 526,116 -> 526,122 -> 541,122 -> 541,116 -> 535,116 -> 535,112
+522,84 -> 522,76 -> 522,84 -> 524,84 -> 524,75 -> 524,84 -> 526,84 -> 526,81 -> 526,84 -> 528,84 -> 528,74 -> 528,84 -> 530,84 -> 530,79 -> 530,84 -> 532,84 -> 532,77 -> 532,84 -> 534,84 -> 534,78 -> 534,84 -> 536,84 -> 536,80 -> 536,84
+521,148 -> 526,148
+504,167 -> 509,167
+522,84 -> 522,76 -> 522,84 -> 524,84 -> 524,75 -> 524,84 -> 526,84 -> 526,81 -> 526,84 -> 528,84 -> 528,74 -> 528,84 -> 530,84 -> 530,79 -> 530,84 -> 532,84 -> 532,77 -> 532,84 -> 534,84 -> 534,78 -> 534,84 -> 536,84 -> 536,80 -> 536,84
+529,112 -> 529,116 -> 526,116 -> 526,122 -> 541,122 -> 541,116 -> 535,116 -> 535,112
+520,130 -> 520,133 -> 515,133 -> 515,138 -> 533,138 -> 533,133 -> 525,133 -> 525,130
+514,148 -> 519,148
+510,141 -> 515,141
+515,60 -> 515,52 -> 515,60 -> 517,60 -> 517,55 -> 517,60 -> 519,60 -> 519,50 -> 519,60 -> 521,60 -> 521,56 -> 521,60 -> 523,60 -> 523,53 -> 523,60 -> 525,60 -> 525,53 -> 525,60
+515,60 -> 515,52 -> 515,60 -> 517,60 -> 517,55 -> 517,60 -> 519,60 -> 519,50 -> 519,60 -> 521,60 -> 521,56 -> 521,60 -> 523,60 -> 523,53 -> 523,60 -> 525,60 -> 525,53 -> 525,60
+533,108 -> 533,109 -> 538,109 -> 538,108
+524,126 -> 524,127 -> 528,127 -> 528,126
+550,103 -> 555,103
+515,60 -> 515,52 -> 515,60 -> 517,60 -> 517,55 -> 517,60 -> 519,60 -> 519,50 -> 519,60 -> 521,60 -> 521,56 -> 521,60 -> 523,60 -> 523,53 -> 523,60 -> 525,60 -> 525,53 -> 525,60
+501,161 -> 501,152 -> 501,161 -> 503,161 -> 503,157 -> 503,161 -> 505,161 -> 505,155 -> 505,161 -> 507,161 -> 507,154 -> 507,161 -> 509,161 -> 509,155 -> 509,161
+529,103 -> 534,103
+504,26 -> 509,26
+529,112 -> 529,116 -> 526,116 -> 526,122 -> 541,122 -> 541,116 -> 535,116 -> 535,112
+508,170 -> 513,170
+523,63 -> 523,66 -> 515,66 -> 515,71 -> 529,71 -> 529,66 -> 528,66 -> 528,63
+499,34 -> 504,34
+522,47 -> 522,43 -> 522,47 -> 524,47 -> 524,41 -> 524,47 -> 526,47 -> 526,39 -> 526,47 -> 528,47 -> 528,39 -> 528,47
+529,112 -> 529,116 -> 526,116 -> 526,122 -> 541,122 -> 541,116 -> 535,116 -> 535,112
+495,32 -> 500,32
+507,148 -> 512,148
+515,60 -> 515,52 -> 515,60 -> 517,60 -> 517,55 -> 517,60 -> 519,60 -> 519,50 -> 519,60 -> 521,60 -> 521,56 -> 521,60 -> 523,60 -> 523,53 -> 523,60 -> 525,60 -> 525,53 -> 525,60
+501,161 -> 501,152 -> 501,161 -> 503,161 -> 503,157 -> 503,161 -> 505,161 -> 505,155 -> 505,161 -> 507,161 -> 507,154 -> 507,161 -> 509,161 -> 509,155 -> 509,161
+531,87 -> 531,88 -> 543,88
+536,103 -> 541,103
+501,161 -> 501,152 -> 501,161 -> 503,161 -> 503,157 -> 503,161 -> 505,161 -> 505,155 -> 505,161 -> 507,161 -> 507,154 -> 507,161 -> 509,161 -> 509,155 -> 509,161
+522,84 -> 522,76 -> 522,84 -> 524,84 -> 524,75 -> 524,84 -> 526,84 -> 526,81 -> 526,84 -> 528,84 -> 528,74 -> 528,84 -> 530,84 -> 530,79 -> 530,84 -> 532,84 -> 532,77 -> 532,84 -> 534,84 -> 534,78 -> 534,84 -> 536,84 -> 536,80 -> 536,84
+522,47 -> 522,43 -> 522,47 -> 524,47 -> 524,41 -> 524,47 -> 526,47 -> 526,39 -> 526,47 -> 528,47 -> 528,39 -> 528,47
+498,30 -> 503,30
+492,34 -> 497,34
+529,112 -> 529,116 -> 526,116 -> 526,122 -> 541,122 -> 541,116 -> 535,116 -> 535,112

inputs/day15.tt

@@ -0,0 +1,36 @@
+Sensor at x=13820, y=3995710: closest beacon is at x=1532002, y=3577287
+Sensor at x=3286002, y=2959504: closest beacon is at x=3931431, y=2926694
+Sensor at x=3654160, y=2649422: closest beacon is at x=3702627, y=2598480
+Sensor at x=3702414, y=2602790: closest beacon is at x=3702627, y=2598480
+Sensor at x=375280, y=2377181: closest beacon is at x=2120140, y=2591883
+Sensor at x=3875726, y=2708666: closest beacon is at x=3931431, y=2926694
+Sensor at x=3786107, y=2547075: closest beacon is at x=3702627, y=2598480
+Sensor at x=2334266, y=3754737: closest beacon is at x=2707879, y=3424224
+Sensor at x=1613400, y=1057722: closest beacon is at x=1686376, y=-104303
+Sensor at x=3305964, y=2380628: closest beacon is at x=3702627, y=2598480
+Sensor at x=1744420, y=3927424: closest beacon is at x=1532002, y=3577287
+Sensor at x=3696849, y=2604845: closest beacon is at x=3702627, y=2598480
+Sensor at x=2357787, y=401688: closest beacon is at x=1686376, y=-104303
+Sensor at x=2127900, y=1984887: closest beacon is at x=2332340, y=2000000
+Sensor at x=3705551, y=2604421: closest beacon is at x=3702627, y=2598480
+Sensor at x=1783014, y=2978242: closest beacon is at x=2120140, y=2591883
+Sensor at x=2536648, y=2910642: closest beacon is at x=2707879, y=3424224
+Sensor at x=3999189, y=2989409: closest beacon is at x=3931431, y=2926694
+Sensor at x=3939169, y=2382534: closest beacon is at x=3702627, y=2598480
+Sensor at x=2792378, y=2002602: closest beacon is at x=2332340, y=2000000
+Sensor at x=3520934, y=3617637: closest beacon is at x=2707879, y=3424224
+Sensor at x=2614525, y=1628105: closest beacon is at x=2332340, y=2000000
+Sensor at x=2828931, y=3996545: closest beacon is at x=2707879, y=3424224
+Sensor at x=2184699, y=2161391: closest beacon is at x=2332340, y=2000000
+Sensor at x=2272873, y=1816621: closest beacon is at x=2332340, y=2000000
+Sensor at x=1630899, y=3675405: closest beacon is at x=1532002, y=3577287
+Sensor at x=3683190, y=2619409: closest beacon is at x=3702627, y=2598480
+Sensor at x=180960, y=185390: closest beacon is at x=187063, y=-1440697
+Sensor at x=1528472, y=3321640: closest beacon is at x=1532002, y=3577287
+Sensor at x=3993470, y=2905566: closest beacon is at x=3931431, y=2926694
+Sensor at x=1684313, y=20931: closest beacon is at x=1686376, y=-104303
+Sensor at x=2547761, y=2464195: closest beacon is at x=2120140, y=2591883
+Sensor at x=3711518, y=845968: closest beacon is at x=3702627, y=2598480
+Sensor at x=3925049, y=2897039: closest beacon is at x=3931431, y=2926694
+Sensor at x=1590740, y=3586256: closest beacon is at x=1532002, y=3577287
+Sensor at x=1033496, y=3762565: closest beacon is at x=1532002, y=3577287

inputs/day16.tt

@@ -0,0 +1,60 @@
+Valve XB has flow rate=0; tunnels lead to valves WZ, LE
+Valve BM has flow rate=0; tunnels lead to valves PL, RI
+Valve GC has flow rate=0; tunnels lead to valves HN, IT
+Valve RM has flow rate=0; tunnels lead to valves ZQ, YL
+Valve ZM has flow rate=5; tunnels lead to valves SN, KE, UW, MY, GW
+Valve UH has flow rate=0; tunnels lead to valves HM, HN
+Valve GW has flow rate=0; tunnels lead to valves LE, ZM
+Valve HN has flow rate=19; tunnels lead to valves UW, UH, GL, WZ, GC
+Valve VT has flow rate=0; tunnels lead to valves ZD, PE
+Valve VI has flow rate=0; tunnels lead to valves JS, AA
+Valve YL has flow rate=12; tunnels lead to valves PM, MH, RM, CM
+Valve LA has flow rate=0; tunnels lead to valves SN, IY
+Valve CM has flow rate=0; tunnels lead to valves YL, UL
+Valve JI has flow rate=24; tunnels lead to valves UV, WH, XW, OJ
+Valve ZD has flow rate=25; tunnels lead to valves VB, XW, VT
+Valve VB has flow rate=0; tunnels lead to valves QX, ZD
+Valve FO has flow rate=0; tunnels lead to valves WH, PE
+Valve JS has flow rate=0; tunnels lead to valves VI, IY
+Valve RI has flow rate=0; tunnels lead to valves PE, BM
+Valve XD has flow rate=14; tunnel leads to valve CP
+Valve ES has flow rate=11; tunnels lead to valves GU, WU
+Valve WZ has flow rate=0; tunnels lead to valves XB, HN
+Valve HW has flow rate=0; tunnels lead to valves QY, LE
+Valve KE has flow rate=0; tunnels lead to valves AA, ZM
+Valve IY has flow rate=22; tunnels lead to valves JS, AB, LA, IT
+Valve XW has flow rate=0; tunnels lead to valves ZD, JI
+Valve BE has flow rate=0; tunnels lead to valves AB, LE
+Valve QY has flow rate=23; tunnels lead to valves AM, HW, MY
+Valve MH has flow rate=0; tunnels lead to valves YL, AM
+Valve IT has flow rate=0; tunnels lead to valves GC, IY
+Valve DA has flow rate=0; tunnels lead to valves QR, CP
+Valve PM has flow rate=0; tunnels lead to valves LE, YL
+Valve WU has flow rate=0; tunnels lead to valves SM, ES
+Valve UL has flow rate=0; tunnels lead to valves CM, QR
+Valve SM has flow rate=13; tunnel leads to valve WU
+Valve XC has flow rate=0; tunnels lead to valves ZJ, AA
+Valve OJ has flow rate=0; tunnels lead to valves GI, JI
+Valve SN has flow rate=0; tunnels lead to valves LA, ZM
+Valve WH has flow rate=0; tunnels lead to valves JI, FO
+Valve UW has flow rate=0; tunnels lead to valves HN, ZM
+Valve HM has flow rate=0; tunnels lead to valves UH, PE
+Valve AB has flow rate=0; tunnels lead to valves BE, IY
+Valve QR has flow rate=8; tunnels lead to valves WW, UL, DA
+Valve UV has flow rate=0; tunnels lead to valves JI, FF
+Valve ZQ has flow rate=20; tunnel leads to valve RM
+Valve ZJ has flow rate=0; tunnels lead to valves PE, XC
+Valve GL has flow rate=0; tunnels lead to valves HN, PL
+Valve CP has flow rate=0; tunnels lead to valves DA, XD
+Valve AM has flow rate=0; tunnels lead to valves QY, MH
+Valve PL has flow rate=17; tunnels lead to valves GL, YE, BM, FF, QX
+Valve YE has flow rate=0; tunnels lead to valves PL, AA
+Valve PE has flow rate=4; tunnels lead to valves FO, RI, ZJ, VT, HM
+Valve MY has flow rate=0; tunnels lead to valves QY, ZM
+Valve QX has flow rate=0; tunnels lead to valves VB, PL
+Valve GI has flow rate=0; tunnels lead to valves OJ, AA
+Valve WW has flow rate=0; tunnels lead to valves GU, QR
+Valve FF has flow rate=0; tunnels lead to valves UV, PL
+Valve LE has flow rate=6; tunnels lead to valves HW, GW, XB, BE, PM
+Valve GU has flow rate=0; tunnels lead to valves ES, WW
+Valve AA has flow rate=0; tunnels lead to valves KE, GI, VI, YE, XC

inputs/day17.tt

@@ -0,0 +1 @@
+><<<<>>>><>>><<><<<<>>>><<>>><>>><<<<>>>><<>>>><<<>>>><<<>>>><<<>>><<<<>><>><<<<>>><><<<><><>>>><<<<><<<<>><<<>>>><<>><><>>>><<<>>><<<>>><<>>>><>>>><>><>>><<>><><<<<><>><<<>>>><<<>>><<<>><>><<<>>><<<<>>>><><<<>>><<<>>><<<<><<<<>>><<<<>>><<<>>><<<<>>><<>>><<><<<>><<<>>><<<<><<<<>>><<<><<>>>><<<>><>>><<>>><<<><<<<>>><<><<<<>>>><<>>>><<>>>><<<<>>><><<<<><>><<<>>>><<<<>><>>>><>><>><>><<<>><<<>>>><<<>><<>><<<<><<<<><<>>>><<<<><<<>>><>><<<>>><<<><<<><<<<><<><<<>>><<<<>>>><<<<><<>><<<<>>><>>><<<<><<<>>>><<><>><<<<>><<<<>>>><<<><<<<><<<<>>><<<><<>>><>>><<<<>>><<>><<<<>>><<<><<<>><<<<>>>><<<<><<><<<<>>>><>>>><<<<>>>><<<>>>><<<><<>>><>>><<<<>><<<<>>><><>><<<>>>><<<<>><<<>><<>><<<>>><<<>>>><<<<>>>><<>>>><<>>>><><<<<>><<<<>>>><<<<>>><<<<>><>><<<>>><>>>><><<>><<>>><<<>>>><>>><<>><<<>><>>><>>><><>><>><<<><<<>>>><>><<<><<<>>><<<<><<>>>><<<><<<>>>><>><<<>>>><<<>>>><>>><><>>>><>><<><<<>>>><<>>>><<<>>><<<<>>><<<>><>>>><<<<>>>><>><<>>><<<<>>>><<<<><>>>><<>><<>>>><>><<<<>>>><<<<>><<<>>>><<>><><>><<<<>><<<>>>><<<>>><<>><><<<>>>><<>><>><<>><>><<<<>><<<>>><<<<>>><<>>>><<>>><<<<>>><>><<><<<>><>>><<<>><<<<>>>><<<>>><<>>><<<>>><<<<>>>><<<<>>><<<>>><<>>>><<>>><<<>>><<><<>>>><<>>>><<><<>>><<><<<>>>><<<<><<<<>><<<>>>><>>><<<<>>><<<<>>>><<>><<<<>>>><<<><<<><<>>>><<<>>>><<<>>>><<<>><<>>><>>><<<<>>><<<<>><<<>>><<<>><<<<>>><<<<><<><>>><<<<>>><<<<>>>><>><<<<>><<<<>>>><<<<><<<>>>><>><<<<><<<<>>>><>><<><<<>>><<>>><<<<>><<<><<<><>><<>>>><<<><<<<><<<>>>><<<<>><<>><<<<>>>><><<<><<<>>>><<>>>><<>><<<<>>>><><><<<<><><<>>><<><<>>><>>><<>><><<><<>>>><<<<><<<>>>><<>><><<>>>><<<<><><<<>>>><<>>><<<><<<>>>><>><<<<>>>><>>><<><>>>><>>>><<<><>>><>>>><<<>><<<>>><<<<>>>><<>>>><<<<>>>><<><>><<<<>><<<<>>><<>>><>>>><<><<>>><>>>><<><<><<><><<<>><>><<<<>>><<<>>>><<<><<<<>><>><>>><<<<><<<>>>><<<>>><><<<<>>><<<<><<<<>>>><>><>>><<<><<>><<<><>>><<<<>><><<<<><>><<>><<>><>><<<<><<<>><>>>><<>><<<<>>><><<<>><<>><<>><>>><>>>><<><>><<<<>>><>>><<>>><<>>>><<>><<<<>>><>><<<>>><<<>>><<<<>>>><<<><<<<>><<><<<><<<>>><<><<>><>><>>><<<>>><<>><<>>><<>><<>><>><<<<>>>><<<<>>><<<>>>><<<<>>><<<>><<<>><<<<>>>><<>><<<<><<<<>><<>>><><<><<<<>>>><><>>>><<<<>>>><<<<>>>><<>><<<<>>>><<<><>><<>>>><<>>>><<<<>>>><<<>>><>><<>>>><<<>>>><<<<>>><<<<>><<<<>>>><<>>><<>>>><>>><>>>><><>><<<<>>>><<<>>>><<<>><<>>><<<<>>><>>>><<>>>><<<><>>><><<>>>><<>>>><<<>>>><<<<><<<<>>>><>>>><>><<<>>><<<>>>><<<>><<<>>><>><<>>><<><><<><<>>>><>>><<<<>><><>><>>><<<<><>>><<<>>><<<><<<<>>><<<>><<<>>><<>>><<<<><<<<><>><><<<<>>><<<>><<>><<<>><<<<>><>><>>>><<>>><<<>><<<>><<<<>><><<<<>>><<<>>>><<<<>>><<>><>><<>>><><<>>><<<>>><<<>><<>>>><<<<>><<<<>>>><<<><<><<<<>><<<<>><<<>>>><>><<<><>>>><<>>>><<><<<>>>><<<<>><<<>>>><<>>><>><<<<>>>><<<<>>><>>>><<<<><<><<>><>><>>><<<><<<<><<<<>><<<>>><<<<>><<><<<<>>>><<<>>>><<<>>>><<<<>>><<><<>><<><<<<>>>><<<><<<<>>>><<>>><<<<>><>>>><<<<>><<<>>>><<><<<<>>>><<<>><>>>><><<<>><<<><<<>>><>>>><>>><<<<><<<<>>><<>>><<<>>><<<<><<<<>>>><<>>><<<>><<>>><><<<>>>><<><>>><<>><<<>>>><<<><>><<<>>><<>>>><<<>>>><>><<><>><<>>>><<<>>>><<<<>>>><<<>>><<<>><<<<><<<<>><><<><<<>><>>><<<<>>><<<<>><<<>>><<>><<<<><<<><<<><<<>>><<<<>>><<<<>><<>>><<>><<<<>>>><<>>>><<>>>><<>><>>><>>>><<>>>><<<>>><<<<>>><>>><>>>><<<>><<>>><<>>>><<>>>><<<>>><<>>><<<><<<>><>>>><<<>><>>><<<>>><>>>><>><<>>><<<<>>><<<<>><>>><<<<>>><<<<><<<>>><><>>><<<>>><>><>>>><<>>>><<<>><<>>><<>><<<<>><<<<><>>><<>><<<<>>><<<>>><<>>>><>>>><<<><>>>><<><><>>><<>>>><<<>>>><><>><<<<>><<<>>>><<<<><<<<>>>><<<<>><>>>><<<>>>><<><<>>>><<<<>>>><<<<>>><>><>>>><>>>><>><<>>>><>>>><<>>><<<<>>>><<>>><><<>>>><<>><<<<><<><>>>><<<<>><<><<><<>><<<><<<>><<<<>>><<<<>><<>><>>><<<<>>>><<<<>>>><<<<>>><><<<<><<<<><><<<<><<<<>>>><<<<>>>><><>>><<<<><<<<><<<><><<<<>><><<<><<<<>><>>><><><<<><>>><<><<>><<<>><<<>>>><<<<>>><<>><<<<><>>><>>><<>>>><<<<>>><<<>>>><<<>>>><<<>><<<>><<<<>>><<<<>><>>><<<<><>>>><<<>><>>><<>>><<<<>><<><<<>><>>><<<>><<<<>>><<<>>>><>>><><<<><<<>>>><<>>><<><>>>><>>>><<<<>>><><><>>>><<<<>><<<<>>><<>>><<<><<<>>>><<><<<>><<<>>>><<<<>>>><>>><<<>>><><<<>><<<<>><<<>>>><>><<><><<>><<<>><<<>>><<<<>>>><<<><<<<>><<<<>>>><<<<>>>><<><<<<>>><<<<>><<<<>><<<>><<<<>>><<>>>><<>>><>><<>>>><>>><>>><<<><>>>><<<>>><<<<><<<<>>><<><><>>>><<>>>><<>>>><<<<>>>><<><<><<<>>><<<>>>><<><<<><<>>><<<><<<>>>><<<<>>><<>>>><<>><><<<><<>><<>>><<<<>><>><<<>><<<<>><<<<><<>>><<><<<<>>>><<<>><<<<>><<>>>><>>>><>>><>>>><<<>>><<<>>>><<>>>><>><>><<<>><<<>>><<>>><<<<>>><<<<>>><<>>>><>>><>><<<<>>>><<>>>><<>>>><<<<>>>><>>>><><>>><<>>>><<<<><<>>>><<<<>><<<<>>>><<>><<<<><<<<>>><<<<>><<>>>><<<>>>><<<><>><<<><<>>><<<<>><<<>>><><<<<>><<<<>><>>><<<<>>><<<<>>>><>>>><<>>>><<>>><>>>><<<<>>><<>><<<><<><<<>>>><<<>>>><<<<><<>>><>><<<<><<<>>><>><><<<><<>>>><>>>><>><<>>><<>>>><<>>>><<<<>><<>><><<>>><<>><<>><<>>><>><<<<>>>><<>>>><<<<>>><<>><><<<><>><<<>><>>><>><<>>><><>>><<>>>><<<>>><<<<>>><<<>><<>><<<<>>><<<><<<>><<<<><<>><>><<<<>><<>>>><<<>><<<>>>><<<<>>>><<<<>><<>>><<<>>><<<>>>><<<<>>><<<<>>>><>><<<<>>>><<>>><><<>>>><<<<>>>><<<<>>>><>><<>><<<<><<<<>>><><>>><<<<>>><<><>>>><<<<><<<>>>><>>>><<<>>>><<<>>>><<>>><<>>><<<<><<<>><>>><<<><<<>>><Line truncated

inputs/day3.tt

@@ -0,0 +1,300 @@
+JppMDcJPcQbqGqFb
+ZStgnHtsSjGBhqFbBmsm
+djzzwgHHggdnfwjtMPDPMGpPlNfpLDll
+dRCtwtlCSttPtlNPNtgvPrDqmBsjGSpjBBsJsqqmrp
+ZhWnZhzMMfnWWTDzBrmsmjsBccJB
+TFQMrZrMfZrLZZnLQdlvNdCgdHPlCllHNF
+PVddPnZWDDPqmHZzqVPzqdHdMRMJjQtvmvjvtTQQtlRtbbQl
+fsNswFpChpNwfgtMvCbjTRJBbtRj
+SFgfSMShLcsLgNMFhpwShFFZPHqZGZPqHdzPZHZcdzDDqd
+dHffzCqSfJCCzCPvdcpzRrBDDBSBBBMtthDDrFMT
+bVsZbsrgbWshBTFtDTtZTD
+slWGNbNWgWwnmNnwgnlGjdJJdPHcvcrcHjqPzdqPvp
+vBFBzGvGBvjFpGWcvCCvBvGPPhZbgLhMnhrPgFgPFgLLPF
+dVlslfdJNVJJmQQwdNRNwLZZZrrqhbPbZndpdgMhLP
+HJRHJpNJlVmftHfNQNRsHmmGCtGWjGDDTvCzcjWDStvcvT
+cVQzCCCpVVjgHsNwwFRqSRSRRtNH
+PWfhfPhbWWdWllPDdTvdbnvhLJLLMJFTSNwJtMRwJLqJJNMq
+DnfblllPbDrbWmbdPFdvlhdgQzzZZzQgcpcsZGcGQQgcpr
+hdFnnrdLnJRrZMzVlMbrwZvz
+TgfjGCcfsqfqqBfRMPDVvVVvTZRPbP
+qQqffcGStBSCQcsqCCBRjGqWhHFptFdnhNLmhnLWmphLLt
+WHPqWhLWHBMqddCdtDRwStDSwgnw
+rfCfZTmvpvvpFVfFrbvTbvcgtwgtStntggwbSJttgJtwgw
+fpQFsmfFmfZcrFCMhWNQWLCzhhCM
+zdqqJHDWwqNNZjQSmtdjpmfnjj
+GFBcPfBLPThcTcLRbpTQQjpTQrjSnQjlvn
+MFVLcsPVbPcRGfVPFRgDzJsHZNDCZNCNZsHg
+WQdMhlmQMwfZlQdgdHfddvtzmbJbcsctbBJqqcvqzB
+rSTrDDCSSGRCnnSGwwzJsbBvJsCCttccsvsz
+VnFwDrNwPwVSDrLgjfZZdMQFMWgljQ
+rJNjBLNQjvLQjFFLQJCFTvGWlRRgfGWDWlCDzlGnRRWG
+tMMhShhwhbgplflwDlnnnzDH
+ZcSZVMSqshhQBQqQvqQgjJ
+btTtWGbvtcvHHccdNRhHdl
+TDzqLPSqBzqVSldPddHhhNNlRQ
+jBLDqDgZZBzJJmsbWjppmmpTWw
+LLDTRRfTwZRGZfDCRTwRsVHsVFBVZVlmVFBFlFJl
+QjWpQrzQcbhfMqrVVHVPFslFVpVmHH
+hqhzqMfNvjvMMzhdRDdCwGDSSdnvRn
+jmMdNCLjLmJPtHtSHhSVVJ
+pDBqgBgCvbfGBBbCGHZhtQZtPHVSVHPV
+pBnWgBpzWzBbWDWvzwpgCvqcmLNTrdLmmrnRLTrmrTdmLd
+dRWWtRGBDPQctQDZ
+CMfnCfFMmTTFVCmfmTLvsnMPZjccHRcPrRPsZQQZPQDRrQ
+fLCffmRTCvRnmTllzVvpdpphNJggpGbJJJpdlh
+cfsfbbWqqZqDScbhGDPDjTPmpVtmmPjPntFD
+dCBBCRQCHNHLMQvrJJJBJLrGPMnjVtPjVMmnjPFmPmMpFn
+HvRGLddgHHvqhwzbWhcgcf
+DHmhhDDhbqrRhvbrHqhPbPvBwwWwTmMGTVwwBMGWVNNwVw
+gSzJjnnjsscfcsZcSfWwQGdMMcWTBcTTMTMw
+nsFCCFZsnSlCFBFflfflsztRPCqvvHPttRbHbhvPrrRr
+SGNRLzpNpgNSNNlWFNwzqJfHfJHBtBdJhBJrHd
+bQnjPTnjVdZtPPrfLP
+TTnTccLnjGFcDNggFl
+lBJmNzJlzmmQBlzgVVjLWRDfLjRsRLWWRS
+vTMvTvtrfdhrrrPTdZwTTwtDqSSnWFWDFMMsRssjjsRqWD
+ZpbvHbZddtbrdrdhcBmmpGQfBQgJNcmz
+qsmhTmTVcDdcffhPhPvvzFhF
+BNNlJbjWBWjtRtNljbmBBCpFzPlFPgpPfwFnlffnlPgg
+JtBmmrrrRbDSrVqDqVSD
+VmSgpSLgJjVDMrFrmMlfFmsG
+bZWhZbzWcCwTWPRCwwwSPQzwMHnflHnGsMGnTrsflGMnlfTF
+CqWhWqWCCWRRZQcLqDLpVDDLNStpgD
+JwzTVzzcLzVJVVlJpVTwzGcrWhFjqsBjCjQFjWcCCjCjBF
+MDSNQMtbSSnSbgbRDvnRNgvhmrqrjBCBtmCrCCWFqthhWm
+bgMfNSSNZTwZQddGJZ
+jjPgbFjjStjjPcSbrbtpvNrGnGDvBnMGvNDNGG
+LwdZwsTdWTTmwDNCNppGBsnpBR
+mWmHwZWhTTJWHBdQQWBjcFczSgjlSftjbtQPzg
+fCBlrffzlCzcmfLDlfgRRnHScsHvRSQHMQvs
+LthpZqtpVThZhGJtqTFvHsVnvsvMsggjHQjgQH
+ZWFWGTLTWBNCWfDfmD
+BpFqJrpcZZBDhDsNqMHhRG
+zwlzPdmzPLhwvhMgsHnN
+mPlWjlQfQjjllWtjQCWzCrBFJFTBcSNcJbbZfcZJSb
+FpzNFTThBDChnnzNBCBNDzWGndgWqbJWVGqmPbJqQgQm
+HQRctcvwgddVcJGd
+LwRMZLjQfSRjFNzFSrhNsThS
+WgRWVLWhFqgqgcgWHqLRWHVRbbbNwBmtBcNcwdwwBNwBzwBN
+pSfssjDSrSvJpNJCztbJBtMNbt
+TzsvGGnjGPsPjSTpDrPfPDSHhWqLgZZVHVhZZZZVQQFLnZ
+sHjtPjQTtDbsfrrqWR
+ZmccchvlvSvvZNMVNhvBLWRJJblWJWJlJfwHbwlL
+hMMBzSMppVSzSNNmNgHjPgGPFTCpTTgTgG
+rPQpCPPCQQZdcFhcZgzVJgwt
+vDBSHmvHSSMlDWWmljnHBvFwzzcrwhVSJwVFtzcJJghw
+bmmrsrsbsvNdCTdbPTdb
+NgzBnsBNnfjgNvvfvWbtShSSFSMLJMFjjbPh
+CCcRHdlQrQPLTJPLGP
+HrDlRcqcDJCCDJHlcplrDJDfgfzBWWNZfvsnNqWwngZWwW
+TggFVbjVTVzRwFFjjqBBqpzNztqcQqNNqN
+SnZPrWndmShSZSPsnSLsJhpMQpcJtNqBClltqctC
+mfWsGdnZZWmZmrLSfsrnmPggwtggRgGTVHvRwgFDjTGT
+wQMZFQwppbPHPbLQJsgQNJJmBnds
+qrSGvRRCvTzTDNnhNgmCgdBm
+qzRrcRlGjvvzlzrvjcGqSSzMHWwVdPMWFpFMHMHWlPWMVV
+BccsFzrBcsfpccccgFmQqlGNqCTLTlQnqgLlRG
+MZbVSMddddSPPtdHPVJPJdTllqLNLGGTNCCRhTnHTQHh
+DMwtbVZDZbSbpprcpccppwrq
+bSZTdNqFjjzjqQMQ
+WtRztLsWJpPLzrsMDlDQjMhVMC
+pcgHRpHmWPJgLRzBJHBPPRBfvvfGNGvvFwfvSvfTmNNZfN
+RjvBljWTTWTlqmBvHjGptRgccZcbPtcttbpzbn
+VhDSDdJLJpSNNVVznPzzzSzcZFngZt
+LsMdQNVMHsBHjqps
+rSPSLTnSCClfSFCR
+MwtZgwNBzzTjzZMbbmjNtwmBcRvFqQllqtQRlFRVqRqVVcvq
+TsMhZsjNjBbTbBbwZLpDnHdDGdHWnpGHnh
+LfdssTFBjFHSwlhzCcZZgMMfMhZZ
+DmtDvrpmNStVvqpPczrZMMhZhhChCC
+vJtJpQWvNVDtJFbHlJSlBbSF
+PgvHLbcgRcGGHzRvgGgchBzsCZnmNZmZddrCrvdddZCZrF
+JQBMjlStJrQsZFrNCZ
+JSJTlqMtjptlplSSqJVDBqphwhhwHRPRggGbGzHbgzVRPH
+pBsztsZdBsnWhntVnhtVTqTWNQlGGTGGFFlQFlTl
+fDvLSMcbDbfMrGqFqSGwSQPzqz
+zjcvLMMvffLjgggzfjjJCCLcdBtRphddBmmZBpCZZpZpmmhs
+gmmSDplcPHDfHDlbVNrtCtCCNqHvTn
+QGwJjzdPMzJhFLwnbvMqrTVCCMnvMv
+LQQZdGjGdJhFBFQGjLGBJzzsBSWcPflllcfmDmfBsmBWPs
+sMppbLDRMQbrTDTJjwcqnfnjwwnw
+CgmFgSPHPzHgdmJWZZFzCzZZcVnGGnttWtVVVnccfjVqwVff
+PhCChPSNgPgPJhPHhFZgsDNRspsvMNQLRvNDvpbD
+pHnVnlRGVpfgpfgCpCTz
+LCNQPqZCqNSSZCStzPgTmztwPfzwzT
+dbSqhjhqQhNLQLFjLjGvFcRnCcsvRVvvsFnG
+QTdnDTDQbCnMdbqdwSmJBljFJZhttJZMSh
+HfNfLNzGLsgWBpGJthlZFBSB
+ssRPHPfNsWHzZZvrvHfgLzNwnbbVVRwwRbVVcqDTddCVdD
+ZhZBrJssjrNsbRtWpjwjlmlm
+qTfHzGTfTGqqLGMdCCRcmmRRZcbPMccWmcRw
+dVCZdDHdGHQhBVNJSsBhBF
+NsplbGDbblHcbCpDlDGDPlPpJjdrVjgrvHnghvVdJrJdvvdn
+tQFMZNWSmWFQRzQSwtzFmwFFJdVBghVrnBjVjBgrvVjMvrhJ
+FFRmFZZRzQRmFLQSZZWQWFCPCNGcTCpGpfGfLTpblpff
+dnhQHqQCnqWwNQCwCRRdJjjJVVPmVVJsJP
+LccFRDgfMgLFBJVlmVVmgjrPzZ
+pvfGpRpSpTnTQbvbTv
+nwNlWwhWwNmJvQQdzdzZGMqDzn
+rcVscPfrLcfvjTFcQDqGdZqMzMSHZHjS
+LsfbbFcvVgRRblJRNR
+Rmrrlmltcffhllfl
+DDZMMMFZVsFsWZDSHhPPfgQbPPnQgcHctf
+zGMGSBVDWCrvwjtBvm
+DCZHwdDwNNGNZDZCjjtpTHLvtlgLbRLttlTL
+BzPzBJffJJQgLlRgGztQ
+PJffcJhJfNNSwFhGZC
+blplfHbwZSfbcbwSbfVSHDHcNvdrvrWsCrvWVCRWnvNndtWW
+hQzBTQLLMBWBsnsnNC
+zMsgTjqTqPpZHbfp
+ZLNNLtfZhRJQtpQhNRttZRqcGFcqGBzjrcqclGScFljjcj
+VnvVVPMWHwgJCMvwdcGFdFrGcwzGBG
+WHgPJJvWVTgnvgvTHmWCHmsNZRtNRDZpfZQffZZssR
+rZgMFMVVjGbVSqZbhftLRDmCGRCNDCtm
+cdddQzdWsWnQvzscnfRHmfnDNtLNChRmfH
+zplDQdDzwszlDsWdPcldzMFFrFrBFgpqVBZgSgZFrF
+gbzfbTvbJgbvzvTvJvJmzvjcBBQSfWDLCSBQQfLZWSCdBHHD
+GhnMhsGrMNPPwnwsRPNsFCZDWHZdWBWHdrZLdCHBBC
+PsnGsssGNsNRFsLGwMVNccJVmbjcjJblbzTVjlTz
+RfBqNfVmPLTTTVRZMMBWjlMvBgbbMs
+rHJzDwJdHzQgbMQlWMhd
+HtJrpCcHflLPFfpq
+SSGtmjQFStDbQbqGWJNnpZwgPsZjnJNNfZ
+RdClRMhlldHdlvdThNgwfJNRspNwJpwZcN
+CMBLgvvBLhrrBHTCVVLBQrWtbrDGmbtWGtzDQFGb
+ZRRCqHpRdztLSqWz
+hRsGjMVccGshPVDVcBmfgFFzggFgfBmWWtSd
+PVjlGhcGJjGPsGMjjDVrMTpRnvRZlHnZNNQbHppTTC
+QjbjWWlndRbwwwQWQdtpTVVZtzRPhHDzThhP
+fFfLsvrLCrmvGlSfLSrlPHThDzTztHVtzDzGtTVh
+fvrgsfccFLLLSvfMCCSWBjdMqdqNWBdBQNnWld
+pjGPvvbllvqGvGjwMbpbRmgSmSwtRtShgSSWWQmW
+DffTZLLzFFFTCRJMhWBzhmhgJt
+CVVZLLTTsZTFCnMffMTFHffLVpGpNqGjNbNPljqVPcGNGlcv
+rvJfztqQJqqrqHHwCzClTbBhDBBDrbSgphbVTrrV
+FFGdNWFLGWMmLDbpRwVbgRBp
+dmNGmZjMjQwtHCCw
+MSGbqbqMbbGDhSSGDhLNBPNcrDPPfzfczPfrnv
+rRwsrljslRgslwwgpssCjRtBNvnmPmBmccvmPnmzcP
+CjVjsssJQpTCrCCgHJLMSZbhMhWGZhHG
+JtBGBFGRVGVLLctRttthLFRBDQlDppljJwNQlpHHQqDHbHHN
+szSZTrzdzTSMdzsmsqqQqwdbgDNqgQNjlN
+SzmrlWPrlfPMsMZTPtCVCFRhhvhccLFPvL
+chmbsMDMMcBnGbZBzZGL
+JjjgJrJJggNgtrQSQBLjWBZlGnnB
+rFNrFtFCRNVrrsHmMDcsLqMhMF
+DLMwrBGgrBBDrcBcNBgWhpGhqVhhqSjqqqmjjp
+JfJCZCdtlbZlHHbjWVpPmHWb
+lTtZtnFQCztWFzJflZLcsrLFNDRNBcswcLMM
+tsVttVCBsCcCqPqwvtqNPQjWDDWjzQQWnpJQSrWJJN
+LMRdZvHGgMmZZGGLGLbhLhJpjWrSjndWJpSJrJppJnpj
+RhRgLMlmgMGMFGLlTtcBvwcfFCtVvfFT
+llBBmtncBglfqwsdwsjdbHwQHm
+zGRhPJvFzhvFvMDGFvGPwSWWQpdpHSwSjWjHsWMw
+JGFhDPrLTzhLhvFPzPjLjTzFlBqltnCqqBffcTgfnZfCfCnB
+QWQGNHQBffCNDMPdRTDLPVMN
+hrtlhtzZwJtwwgFgtlJthJJtZMqPVVpLmDVqRDmVPmMPVRTV
+SJSSnJwJlsFFvcHSBbfLQHGL
+zMNVzhNFsdNssmhlvtQvlttBlVGbTt
+wHpFwjHjLFHlwtncTQlnwn
+CCpjpqLCLqJggghqRmFsNRFmPszh
+CTjmprmNcnmCNVQbstnstvbnQv
+jqqdGhHgPRdfRRQvfLQffz
+BGgqBhMdgqBHMDDqqMPwgdhSTJNjjmJWWCTCCmwTWZNpmZ
+LqSDFFmdqDBDbbBHWl
+dQcRpgwRQPngBWHbVWht
+vdQMJQCQQvrJNqrTNsSZSmZT
+cqrHcHHFNFPLLNPHLWnHHFHFjvlbZfWjSjBjZfSblhbBSbSf
+VdVTGwTzTwTpMJslvjfsbbZSvnBClj
+nJdGmmTpTTdmNQNNLPPmDFQL
+VcjpTTtpcbThJBTTcjBvSPJzJlvPlwfJrgrgvw
+dmshCNqnqdhmRsCsqCnrNgPPrPfzrNLfSwSgzl
+ddQZdFnhsMttFTbDDD
+hLThMTSdfMzzLzTLsFTbwtDvtsFTnttF
+pZlNllPWrPCQPQlWNqjrqrjsnfDFbbtbstwswtvDnwtwjt
+pCNNQBCClQrplrfHQpQdSRMSVRhJzRchRhGHSh
+RZfVfRnTcPQWZcRVcRNSvljQsSSjNvvNqvss
+pwbwgmqJhGlNvvzgMM
+pthrhpmthmwhHHpLbbdrJmLWWRPTRZnCnPCPBnWTWTZq
+nzsJJsMjGMMsQFbnNmLnmCfb
+HlllPPTPlWTPDRRDRHcwwhrLLZfQmgmmQCFHvNZCgfggZQ
+lPcNTwNWddGsMSttdjzj
+bTbJZJDVFdqpBZTFTZJprdcsjjGszmjQszcjzDvsgccv
+HHLnhMNCCPhfhCLMlPlnvgGfctscSvtSjGjztQtm
+wWNQMPPMwlPHHPnnRLwWpJbrbbqbdppqJVJdZV
+gpgpNnnrhwBVWFqgjqqF
+ZCTsdRbCGZpZzCSGbWmtMBmWtqBBqdjjmq
+LcsTSlplZrJNcQQPvH
+DJDpMcqJDcDddNcJPGcJGFfnfZZmZZfRQZRNmVQVnBNn
+WWThvSSHFshlSsHvgTHLlzBQfVWwmwnnfmRQWnQVRn
+vljlgHjhstHbLhjLjrbPqMGJcJFJCMPrdF
+pJlPMpMBrrMcnrBBMMrvdhdgFvmcFdWtmdtftg
+bVVRmTRVTVVSVVVzZZqsggFHWTWtWffWFfWdtHdH
+RjLQDSzmVsjRRZSZQrCMJDPwlnJJnGGrPB
+GRgJtglPGlCrhQQrfW
+vSjvZvZHNBjZSvwjvmvNDqhhFqhHrMhrHpfWqQfhpW
+NBmwDSbZbvsNNBjmZfJzJgbVnGJbzVzPVRtL
+QQZVQCdlVmdZnWmJBrLwSJRdggwdJr
+DqHhPhcpvDqPFjhHjtFPssSJNfSBwBvffrgJwwJLBJbr
+jpsHcptHsqtPttsjctpFhGlZwCMlWMmWGCWVQnTMVWmz
+zzvnHjHWSfnvzpnfSRHdgrrsmWmhVrrwwbTrTmsrwm
+NlLNGqqclqlZZCLCGGCPllJhhPJbrmpmrwVshFVsJbwr
+DMLDNCZQCGLQGDtQpGtMjRdfdSRSSBtjtBjfjgjS
+WBBJfjBQJjftGCbttVJptC
+sdlmTHsqNsqpRtGcbWdbnR
+svNMhmWHNmvmvHZWTvBQDgSSjDFPSBSFPP
+mrlgqncgwHdqWWhRNtRttSvbRwwSvN
+jZLCZVZzVcCTcpCDVSBBSbvvRFbfDBSDNS
+VPJVpQjTZLjVLJJQGZTZGcQVghsGlmhshlqnghqrdrgldhlW
+qwGDMqMFWbFbqbDwMgqgnjfnffffcTTjNnpTfBncZZ
+lSdclSltlzPsJlhNNfTQPTmQhpPh
+LtllsscLLLvvJlSzWGqwrDGqvbqMwMGb
+bnfvnnQsVTdHQDmdNN
+fwlttwrfSfLwdGZGmGND
+qlPrjjplfSpjSltfttBBsvgzgbgnggBqWVvC
+HHrBSmBqBHdHCFcQsc
+WqtMDDnMMZhMhcsQVM
+bqtbGDLLTTnRPwvGgBNmNrwvjm
+RwWzWFwBcdSdMgJW
+mrTjVQDQthQvjrvTmggFbbdgSJcJDFgSdg
+phhFtvjNvFvTTvmTHZzlGlzZRZLBlzRp
+cHlZmZmJSHZcTVGmvZVcGVHlNtbDNbtWFWdtlbCWbWtQDFdr
+pwfwgRhngPjjtdWdNtFrdFwT
+RTgMpfhBcMJGHqcz
+dmCbpCLQVFmCRddCTFLCgZtWPNBhSNNwZWgWZvSwhN
+rDzGDjJHhhwzThBS
+rJrclsjjsJMJnJMLnbQQQFmRTqLVRT
+TgFTGPtrWHzgCJDz
+fQbfLwbbFbWjHJHWjd
+LvQvwVfQvQhLLLLsmMBfLfBhqchtGFSNSFNqrSqPcqSGttSN
+MsMmFgTVMMgMdFVMhdzWqCCBCWjWqBWqhzzL
+nHfZDlbvcrDpcpcfDJbNJqGLbCjBmjLzJC
+RnDZHwmmTwVMTsMS
+NpdpdnjNCRjBnHRPpBDnhSdSwFFLFdScFFWcFWLd
+stqMrMZtsQMJmMqvrtqMbstQVchPFWgFVVFVwfWJcSSWVSSV
+MQrZzbvMrrrZZtZmstMtMsDRRjPHCGTjBnzpnDHTCGjG
+ClGGvDMGMNhNSmFVPbpgFgmFgZPb
+WhTTLWsBBWTcrPpggtQpsQFpVb
+fBRTqWLjTrzDNhMvCSGDzl
+jbzjttVzpbWzWVbTtzWzVwPbPPcwDDccccFNFLMFsm
+rlghJZHmCHvHJvRLSNLhhhccNPwcMP
+QffmBZRBGtVTBdTG
+bDRqHwwRpNPnbppn
+FqrlQSQJSVsQrSCmpdPNpcNCcP
+jFZjrssjBhrZVhJLLGHfMHfwtqRjMqRTvD
+SMMCTBzFfSRhTThCSMRSzzHnJgqGDHQgGVDnqrqnqqnqcQ
+ljvjpWPbrWWtrbmDVDlmnDnqVmgJ
+bNjsNPrNPtswfZzfTSTBwhSM
+hNMNdssdMqdTQchqgNZzHtwmwGHHzmQZGHDH
+JrbJvJrvLrPjrPCVCjRBLPbzfRFZmzwHgFHmGHmwFwzFZR
+rpbrvVjPCBbCJrCSLSPsTlphNncMglcNTMWMql
+fGWGHbrllCCWWllFNPQSZvdPSvdZTffZ
+tqssVjJMJWzWVvSvWS
+qtwMwDWjnRRwssWjngwjjnhhDcCLhhCFHlcmcbCHFmDC
+rFTdFjdRDTTlDWCqvhwLhwZdLS
+QzfJfnfsbsJHMnNmHhVpCZwSQSWqSqVQhS
+nJnczsHzNMmBJnbnbNwnfzJfcDTltllRTgPlFlgPrTDjPRGl
+ZLCGDvvJlvGChSPZWPSsZWdRRN
+rQccBwcccnHmQggnVLPLWpgVWPpWzSRs
+fmwTfTHnMBTfJDbfftJLvhlL

inputs/day4.tt

@@ -0,0 +1,1000 @@
+24-91,80-92
+28-93,5-94
+30-81,33-82
+28-97,59-72
+65-66,54-70
+35-35,5-36
+3-5,4-91
+73-97,20-72
+53-77,2-54
+47-96,48-95
+7-75,8-75
+66-89,67-86
+23-25,24-95
+97-98,5-98
+58-61,13-57
+53-62,52-52
+5-93,92-93
+52-61,34-61
+83-85,82-92
+90-90,46-91
+35-95,94-98
+89-91,72-90
+3-98,81-97
+26-26,27-96
+41-54,53-55
+9-43,8-54
+14-14,14-86
+36-50,50-50
+79-84,78-78
+44-69,70-73
+6-51,5-5
+40-40,39-73
+10-65,9-11
+1-2,4-99
+8-36,5-5
+72-72,25-71
+66-66,67-96
+69-79,62-68
+46-57,5-56
+97-98,39-98
+98-99,4-97
+9-94,10-84
+3-15,6-14
+9-10,11-80
+9-9,9-69
+60-79,78-82
+50-70,70-90
+12-12,13-64
+8-92,3-8
+29-79,30-78
+96-97,5-97
+13-75,59-63
+45-78,45-79
+38-70,38-69
+13-33,19-25
+79-87,47-88
+9-67,8-67
+51-59,58-60
+28-61,28-62
+7-90,33-87
+5-5,5-33
+78-85,43-84
+18-94,18-95
+42-42,42-81
+12-93,11-92
+16-64,17-64
+2-99,1-98
+32-68,31-69
+14-73,15-15
+43-55,43-81
+13-65,66-66
+79-85,79-91
+81-84,52-80
+21-68,22-67
+32-80,33-80
+17-76,83-83
+11-65,39-65
+32-85,33-84
+25-58,26-57
+14-28,8-15
+64-87,20-86
+62-99,29-61
+26-40,27-47
+9-76,9-83
+42-90,43-89
+5-97,5-93
+6-16,15-87
+45-91,9-91
+34-34,35-85
+21-56,21-21
+38-79,47-80
+79-98,36-96
+25-99,73-99
+4-51,12-50
+9-10,14-50
+65-89,26-48
+17-19,18-18
+39-60,34-75
+61-76,61-61
+38-90,37-37
+36-67,68-68
+6-19,10-20
+3-91,3-97
+35-93,35-94
+63-89,59-62
+46-76,66-76
+31-63,31-64
+17-44,33-37
+35-43,35-68
+11-13,12-90
+39-83,40-63
+41-99,24-86
+41-76,41-56
+9-62,10-62
+3-92,92-92
+36-41,36-46
+6-21,5-26
+7-98,5-97
+24-95,9-35
+4-82,3-81
+45-74,7-35
+7-74,59-75
+62-68,32-61
+45-66,44-83
+36-94,36-37
+57-76,57-77
+34-71,71-72
+95-95,95-95
+58-75,57-79
+48-75,40-53
+21-94,21-31
+55-55,3-56
+48-80,3-80
+10-81,9-81
+13-66,6-7
+1-91,90-92
+4-5,4-83
+22-76,20-45
+4-13,3-3
+10-22,6-6
+18-91,18-90
+50-53,51-52
+23-33,21-24
+1-49,1-48
+8-40,8-39
+11-97,2-96
+79-81,55-75
+82-95,81-81
+9-10,10-68
+59-59,58-58
+2-99,2-2
+22-36,21-22
+49-77,49-50
+7-21,7-7
+65-98,66-72
+1-43,39-40
+25-60,25-25
+12-79,38-80
+89-90,26-90
+52-72,53-53
+15-96,97-99
+4-8,4-72
+2-73,72-72
+11-35,15-35
+99-99,1-98
+72-83,8-88
+29-35,1-3
+32-72,15-33
+50-86,51-51
+27-65,59-87
+11-11,11-52
+16-87,17-87
+60-62,61-61
+50-90,81-92
+86-86,43-86
+42-82,11-82
+93-94,3-94
+22-91,90-92
+14-91,13-75
+11-28,14-19
+76-85,75-77
+7-98,6-98
+25-40,2-41
+4-96,12-90
+61-75,1-62
+17-97,16-17
+38-93,38-52
+16-34,17-39
+61-78,29-79
+7-91,90-90
+30-59,20-60
+5-98,4-98
+55-55,55-99
+1-95,1-94
+15-87,14-14
+56-92,23-55
+9-97,46-58
+9-93,8-94
+4-10,16-96
+52-53,24-53
+11-59,10-59
+61-76,53-65
+26-45,45-46
+4-38,38-92
+46-46,46-87
+41-61,40-95
+7-17,2-17
+26-27,27-33
+58-92,58-90
+13-96,13-98
+76-76,1-77
+12-97,12-96
+30-30,29-79
+38-86,38-86
+6-94,93-93
+5-9,11-55
+52-52,51-51
+29-88,29-29
+22-65,2-22
+51-60,57-77
+16-78,4-77
+99-99,40-98
+90-90,71-91
+16-86,16-87
+37-92,37-86
+42-79,48-56
+25-47,24-49
+32-35,33-36
+64-75,5-53
+18-53,32-54
+59-74,64-75
+22-76,21-76
+3-90,3-90
+98-98,15-99
+4-17,17-77
+97-97,7-97
+94-95,13-95
+19-56,4-56
+8-12,12-95
+9-75,9-21
+1-45,25-43
+65-82,65-66
+27-63,27-27
+97-99,5-96
+15-85,14-15
+24-75,24-74
+34-81,34-82
+29-97,18-96
+13-80,13-17
+7-93,8-93
+81-82,16-82
+16-59,60-98
+88-93,22-88
+91-93,41-92
+16-57,16-85
+19-46,15-20
+16-52,16-72
+7-7,8-61
+80-86,80-82
+65-75,1-88
+7-78,1-77
+5-94,4-94
+59-88,60-87
+69-73,69-70
+16-16,17-52
+50-91,51-91
+39-57,38-40
+12-73,72-74
+2-4,10-66
+36-38,36-71
+23-80,63-98
+85-91,40-84
+47-48,6-48
+1-3,3-97
+33-33,33-34
+16-18,17-61
+81-83,1-82
+53-82,15-54
+54-84,63-84
+1-98,97-97
+3-77,4-61
+34-79,35-54
+24-24,25-82
+6-99,4-6
+29-49,30-49
+1-2,1-90
+1-37,1-1
+3-4,8-62
+10-85,11-86
+57-59,54-63
+3-93,1-93
+58-59,9-59
+37-38,25-38
+32-96,31-96
+2-91,23-90
+31-70,37-47
+18-77,67-76
+58-91,66-97
+21-44,45-45
+60-61,61-78
+12-12,11-55
+43-65,15-66
+21-70,20-21
+10-10,10-88
+11-71,12-72
+75-75,50-76
+29-29,11-28
+4-81,1-98
+36-54,37-53
+8-92,91-93
+37-76,37-77
+74-99,75-99
+3-98,12-97
+19-83,20-83
+97-99,2-96
+45-45,45-95
+3-87,2-86
+66-74,50-65
+12-12,12-77
+1-93,5-85
+40-52,43-82
+5-69,9-70
+2-11,10-31
+31-74,31-99
+40-96,41-64
+12-38,11-13
+18-55,18-88
+54-84,53-54
+10-95,5-94
+32-70,63-71
+20-84,8-47
+61-87,86-87
+16-31,4-16
+1-97,1-96
+1-5,6-28
+73-73,38-72
+23-50,22-22
+27-93,27-36
+99-99,6-99
+99-99,1-99
+99-99,34-75
+7-24,18-24
+5-43,9-18
+3-6,5-62
+35-67,17-66
+16-45,8-44
+2-90,2-91
+48-97,96-97
+35-74,7-73
+25-86,85-85
+13-78,13-89
+2-79,79-79
+5-98,1-98
+66-66,64-68
+15-85,20-86
+25-41,42-73
+18-30,29-29
+16-20,16-75
+4-6,5-89
+7-56,8-57
+11-64,11-65
+7-7,9-86
+6-68,6-72
+4-92,4-91
+26-28,25-65
+2-57,1-58
+96-98,22-95
+2-82,82-82
+96-98,95-97
+11-91,90-90
+8-87,7-8
+64-92,76-93
+2-4,4-30
+53-92,49-61
+17-50,18-51
+8-64,7-64
+35-60,5-36
+1-6,6-85
+7-62,62-62
+38-42,50-54
+3-3,3-60
+39-48,50-86
+1-97,16-89
+44-72,73-84
+14-68,16-68
+7-55,8-8
+13-79,19-79
+31-94,95-97
+30-63,19-31
+15-83,52-83
+27-27,27-83
+72-72,3-71
+35-99,1-98
+29-80,29-88
+40-71,20-70
+61-93,60-94
+3-93,1-93
+4-4,5-99
+22-69,10-26
+42-74,42-75
+18-39,19-38
+37-43,43-92
+29-31,16-30
+7-95,7-7
+72-73,72-72
+9-90,91-98
+7-51,8-47
+28-88,89-94
+3-94,4-94
+20-41,37-51
+19-34,4-34
+13-63,64-68
+5-98,5-90
+24-93,24-73
+26-56,11-56
+2-75,33-76
+1-99,2-96
+44-55,54-56
+64-99,64-80
+41-64,41-64
+15-80,17-75
+57-59,58-90
+5-12,7-58
+16-50,17-17
+41-48,40-47
+31-32,31-92
+1-91,1-37
+53-67,49-77
+3-75,2-79
+55-76,47-60
+42-42,42-58
+20-42,20-41
+94-98,51-97
+1-44,1-45
+19-50,2-51
+28-82,29-94
+18-97,18-18
+41-89,14-41
+3-36,5-35
+64-85,31-86
+72-96,95-96
+11-18,18-87
+19-63,62-62
+16-17,16-94
+97-97,1-98
+22-95,23-96
+16-16,17-35
+25-96,43-96
+50-87,50-50
+3-92,3-89
+20-78,20-20
+53-53,54-89
+5-43,8-44
+39-85,38-38
+47-76,46-77
+35-78,77-79
+28-47,27-29
+39-39,36-40
+87-98,76-78
+30-35,30-63
+39-53,21-30
+30-30,30-93
+65-97,19-96
+74-77,73-98
+21-95,6-22
+36-89,47-88
+99-99,8-98
+22-68,25-69
+38-90,38-42
+39-88,17-39
+79-85,78-84
+11-74,7-7
+38-45,38-45
+57-90,56-58
+1-2,3-83
+2-48,7-49
+30-95,30-96
+71-96,71-79
+4-89,96-99
+44-93,44-99
+16-16,15-98
+7-95,10-91
+12-15,23-41
+39-62,38-92
+5-10,7-12
+51-91,14-52
+12-12,12-76
+54-58,56-59
+9-9,10-56
+11-42,49-70
+14-76,19-77
+24-33,27-33
+23-98,23-88
+35-78,51-85
+1-1,3-86
+1-2,2-94
+30-36,22-58
+48-48,47-51
+7-82,83-99
+31-77,31-31
+4-6,9-97
+63-85,10-86
+30-80,28-81
+1-1,1-98
+7-97,18-89
+52-89,21-88
+9-69,14-70
+71-72,34-72
+55-61,10-97
+59-88,55-55
+31-54,31-53
+26-35,45-98
+36-79,6-99
+2-3,2-41
+6-85,6-84
+9-97,1-95
+16-45,43-46
+5-81,4-80
+4-91,90-92
+44-86,30-87
+72-74,53-73
+20-20,15-15
+40-62,40-40
+28-99,34-62
+4-89,4-94
+42-58,46-59
+43-72,42-81
+81-83,22-82
+29-43,10-53
+47-55,46-70
+10-84,4-5
+10-93,11-94
+38-74,74-74
+14-48,13-14
+11-91,10-10
+9-11,10-10
+7-60,6-42
+3-93,92-92
+14-69,14-68
+32-45,41-46
+2-99,3-99
+16-83,15-83
+39-44,39-40
+2-76,75-77
+91-92,20-82
+19-50,24-51
+31-77,9-78
+3-99,70-99
+35-36,36-65
+6-24,7-68
+64-91,64-92
+95-96,95-96
+44-58,2-57
+61-61,44-62
+11-98,11-55
+38-47,20-46
+8-15,8-97
+29-53,27-29
+84-95,59-89
+61-62,61-85
+19-77,20-46
+88-92,92-92
+2-99,98-99
+10-79,10-10
+6-91,20-88
+14-74,10-10
+13-34,12-35
+27-87,86-86
+1-1,1-86
+28-31,27-79
+38-80,21-73
+23-64,22-24
+38-94,93-95
+96-98,10-95
+50-51,49-50
+74-88,81-89
+27-62,24-28
+49-49,48-92
+3-5,5-8
+47-87,47-76
+66-86,50-67
+78-96,77-77
+3-91,2-92
+88-91,5-87
+47-88,49-88
+56-80,55-79
+96-96,2-96
+19-38,30-39
+6-93,93-93
+36-98,36-36
+37-37,14-37
+17-17,18-67
+10-83,66-88
+25-89,28-88
+47-99,1-97
+87-87,18-86
+55-60,55-55
+15-15,23-61
+33-67,32-77
+37-42,38-42
+41-41,23-40
+54-66,53-68
+57-98,53-76
+14-92,14-93
+12-96,12-13
+43-43,14-42
+23-91,45-54
+36-59,58-58
+6-6,7-90
+31-38,37-39
+8-94,7-94
+94-94,87-94
+35-78,36-91
+37-90,68-75
+93-93,9-92
+39-80,35-84
+16-89,16-82
+1-86,2-37
+22-75,31-97
+1-97,96-98
+70-82,66-81
+8-94,93-94
+5-94,5-5
+4-75,5-74
+65-65,44-80
+33-97,96-97
+4-58,48-59
+5-99,5-5
+62-70,49-69
+37-42,36-41
+1-98,1-99
+91-92,5-92
+80-89,1-80
+15-92,74-93
+26-93,25-25
+43-46,41-45
+14-14,15-75
+29-29,30-99
+64-98,64-97
+14-86,87-99
+5-6,5-27
+50-75,34-75
+9-24,23-94
+77-78,76-77
+11-27,2-43
+98-99,58-99
+8-87,8-9
+35-35,35-38
+22-85,2-23
+39-84,49-70
+7-15,15-77
+98-98,7-97
+42-47,15-41
+27-34,27-27
+37-37,38-91
+33-81,33-80
+30-51,11-52
+79-80,76-80
+59-98,13-77
+52-55,33-53
+3-67,68-68
+3-72,72-83
+20-43,24-51
+75-89,29-76
+31-56,55-56
+25-50,24-49
+93-99,98-98
+2-76,2-75
+8-80,8-81
+16-18,45-60
+1-1,2-96
+55-82,54-93
+60-89,83-88
+55-88,11-66
+2-99,98-98
+83-85,11-84
+54-69,12-55
+10-10,10-74
+11-21,16-22
+50-71,68-75
+28-99,11-78
+41-51,39-87
+10-11,16-92
+72-72,13-72
+92-92,2-91
+27-46,45-47
+13-47,9-46
+1-99,2-18
+21-96,21-95
+5-5,5-61
+66-66,59-66
+30-82,30-77
+19-19,20-58
+82-89,2-99
+15-15,15-99
+10-10,11-51
+47-97,47-92
+18-20,19-56
+7-11,20-82
+24-73,24-70
+45-45,46-50
+13-91,65-74
+19-82,19-77
+26-98,2-58
+87-88,17-87
+44-51,22-51
+3-95,11-86
+5-49,15-50
+14-77,13-77
+98-99,1-99
+15-60,14-65
+4-8,8-21
+39-86,85-97
+25-92,24-24
+29-29,29-78
+9-63,8-8
+76-76,14-55
+15-88,16-84
+9-89,90-94
+4-89,3-90
+4-33,32-64
+4-98,2-98
+78-86,20-81
+63-89,62-88
+8-56,7-97
+25-44,25-45
+3-32,4-8
+53-86,53-87
+5-85,3-95
+18-24,8-94
+93-98,92-94
+39-53,54-69
+28-73,17-72
+3-93,4-9
+8-46,8-16
+3-3,2-78
+13-22,23-26
+71-72,47-72
+3-8,7-20
+6-73,1-6
+31-99,33-91
+90-99,89-89
+9-81,7-7
+58-59,58-63
+64-83,83-83
+4-5,4-5
+54-92,19-86
+7-8,8-63
+31-48,48-80
+22-86,8-22
+76-91,73-76
+62-78,9-79
+16-93,19-94
+5-95,5-93
+13-80,14-81
+6-80,79-79
+78-84,77-79
+40-83,78-84
+11-68,5-6
+81-81,23-82
+1-27,29-29
+50-60,51-53
+44-49,44-45
+52-62,51-98
+1-98,1-99
+39-97,98-99
+25-52,15-92
+34-99,34-34
+10-35,5-69
+11-11,12-69
+47-53,53-53
+92-94,7-93
+8-8,8-81
+28-85,28-84
+39-88,33-34
+66-83,65-86
+45-94,45-61
+36-60,14-36
+10-40,11-90
+23-75,24-51
+61-63,7-62
+68-83,82-82
+55-60,55-73
+9-44,2-44
+11-95,95-97
+10-62,9-65
+81-81,82-98
+6-56,6-57
+17-50,34-50
+4-34,34-34
+20-98,19-21
+25-39,25-58
+40-79,8-80
+14-57,14-58
+94-95,67-95
+17-24,15-24
+16-18,17-89
+6-58,5-57
+6-99,6-37
+3-3,3-17
+46-74,47-66
+16-38,17-17
+22-97,13-23
+99-99,38-99
+52-65,62-62
+22-24,17-23
+60-98,1-97
+3-71,7-21
+10-94,10-95
+38-90,38-89
+24-45,23-62
+12-14,13-95
+37-87,38-53
+14-45,13-45
+77-77,27-77
+25-83,17-25
+21-94,9-99
+73-73,49-73
+50-82,49-64
+7-95,95-95
+64-86,63-87
+33-85,2-50
+33-87,34-53
+13-31,30-31
+62-63,63-91
+9-91,91-92
+16-72,15-72
+32-40,39-40
+10-98,10-93
+1-3,2-18
+12-62,12-43
+35-68,34-69
+50-52,32-51
+4-37,4-35
+6-94,65-96
+63-88,44-62
+17-49,9-49
+20-49,20-48
+7-91,6-91
+33-63,34-63
+62-63,63-89
+9-62,10-62
+31-31,32-38
+77-87,15-87
+34-89,42-89
+1-2,3-79
+59-65,58-87
+4-57,2-56
+34-54,13-34
+41-95,5-54
+28-76,77-86
+13-13,12-42
+12-97,12-96
+20-27,26-50
+70-84,70-72
+47-75,48-69
+5-75,75-75
+25-80,22-79
+28-78,79-79
+89-89,11-93
+39-74,75-75
+20-88,20-87
+79-80,37-78
+7-17,16-18
+31-68,31-68
+18-36,18-18
+73-96,35-73
+28-98,27-29
+26-75,19-74
+2-4,3-48
+2-3,4-79
+4-93,92-92
+58-89,70-89
+1-99,2-68
+57-78,56-56
+10-46,10-39
+6-61,6-60
+51-90,50-90
+27-90,27-28
+45-45,1-44
+18-31,13-31
+25-51,18-52
+7-28,4-29
+93-93,6-93
+9-50,8-51
+92-94,1-93
+29-91,30-30
+25-75,24-75
+55-55,15-55
+70-73,62-71
+8-84,8-42
+50-76,46-57
+45-80,44-79
+6-86,7-87
+8-83,7-82
+4-30,8-31
+57-95,58-96
+49-50,50-79
+90-92,89-95
+24-24,25-98
+60-75,69-75
+9-83,20-69
+32-33,32-36
+3-3,2-98
+1-84,83-85
+69-99,99-99
+92-97,87-92
+71-96,72-97
+49-49,49-66
+18-18,35-75
+7-94,7-7
+3-48,45-92
+47-86,86-86
+10-42,7-66
+11-85,12-96
+39-77,17-39
+14-24,3-23
+23-23,23-23
+66-66,54-67
+29-29,30-71
+20-89,56-90
+41-56,40-57
+1-99,3-97
+4-92,4-98
+7-39,38-38
+69-71,68-73
+95-97,13-96
+55-84,54-75
+61-79,64-88
+97-98,3-98
+9-42,6-41
+36-86,35-36
+8-91,9-86
+16-45,58-79
+43-43,11-44
+8-74,9-73
+2-78,3-78
+76-86,83-94
+1-96,2-97
+49-79,49-78
+1-1,3-76
+74-89,21-90
+7-97,1-2
+38-73,73-73
+24-76,29-77
+4-43,2-2
+19-20,20-96
+56-77,51-77
+10-82,10-65
+58-71,17-94
+20-74,74-87
+28-84,28-83
+5-81,87-89
+9-40,9-24
+38-80,39-81
+36-36,36-37
+76-76,33-76
+62-62,1-62
+11-27,21-25
+13-59,44-59
+36-89,36-37
+53-70,45-69
+5-42,41-41
+49-49,9-50
+35-59,12-35
+32-63,18-63
+38-69,37-71
+70-97,96-96
+52-80,53-75
+43-43,44-94
+49-83,52-84
+11-76,10-98
+4-91,90-92
+26-54,26-30
+57-86,57-58
+3-97,96-96
+1-1,3-98
+24-36,36-67
+8-64,3-64
+39-98,14-98
+59-62,59-63
+30-42,30-31
+3-87,2-4
+6-79,7-80
+7-66,67-80
+30-48,18-47
+91-96,82-95
+4-78,4-5
+67-68,24-68
+7-7,8-59
+1-83,5-79
+50-67,34-66
+27-74,26-73
+7-94,94-97
+2-27,3-18
+13-55,56-56
+3-3,4-40
+52-66,52-52
+40-40,39-81
+3-54,1-47

inputs/day5.tt

@@ -0,0 +1,511 @@
+[B]                     [N]     [H]
+[V]         [P] [T]     [V]     [P]
+[W]     [C] [T] [S]     [H]     [N]
+[T]     [J] [Z] [M] [N] [F]     [L]
+[Q]     [W] [N] [J] [T] [Q] [R] [B]
+[N] [B] [Q] [R] [V] [F] [D] [F] [M]
+[H] [W] [S] [J] [P] [W] [L] [P] [S]
+[D] [D] [T] [F] [G] [B] [B] [H] [Z]
+ 1   2   3   4   5   6   7   8   9
+
+move 2 from 8 to 1
+move 4 from 9 to 8
+move 2 from 1 to 6
+move 7 from 4 to 2
+move 10 from 2 to 7
+move 2 from 1 to 6
+move 1 from 9 to 4
+move 1 from 4 to 1
+move 8 from 6 to 4
+move 7 from 1 to 8
+move 6 from 8 to 1
+move 1 from 4 to 1
+move 8 from 7 to 3
+move 2 from 5 to 2
+move 5 from 3 to 2
+move 5 from 2 to 1
+move 1 from 6 to 5
+move 2 from 2 to 6
+move 5 from 8 to 7
+move 12 from 7 to 4
+move 3 from 5 to 4
+move 2 from 6 to 4
+move 9 from 1 to 7
+move 4 from 3 to 7
+move 4 from 3 to 4
+move 3 from 1 to 7
+move 1 from 9 to 1
+move 1 from 1 to 4
+move 2 from 5 to 2
+move 1 from 3 to 7
+move 15 from 7 to 2
+move 4 from 7 to 9
+move 6 from 9 to 2
+move 2 from 8 to 3
+move 3 from 2 to 8
+move 1 from 7 to 6
+move 8 from 2 to 5
+move 2 from 8 to 4
+move 2 from 3 to 8
+move 9 from 5 to 9
+move 7 from 4 to 2
+move 1 from 8 to 6
+move 6 from 9 to 2
+move 3 from 9 to 7
+move 2 from 8 to 4
+move 7 from 2 to 6
+move 7 from 4 to 1
+move 3 from 1 to 8
+move 2 from 1 to 8
+move 4 from 8 to 2
+move 2 from 1 to 5
+move 19 from 2 to 7
+move 8 from 4 to 7
+move 18 from 7 to 1
+move 11 from 7 to 4
+move 15 from 1 to 7
+move 9 from 4 to 3
+move 2 from 3 to 1
+move 9 from 4 to 5
+move 1 from 8 to 1
+move 8 from 6 to 5
+move 3 from 2 to 5
+move 1 from 6 to 7
+move 4 from 4 to 3
+move 8 from 5 to 1
+move 13 from 1 to 6
+move 12 from 7 to 1
+move 12 from 6 to 3
+move 1 from 7 to 6
+move 1 from 7 to 5
+move 1 from 1 to 9
+move 1 from 3 to 1
+move 3 from 1 to 9
+move 12 from 3 to 8
+move 1 from 9 to 3
+move 1 from 6 to 8
+move 5 from 5 to 1
+move 1 from 6 to 2
+move 10 from 8 to 9
+move 13 from 9 to 2
+move 10 from 3 to 4
+move 1 from 8 to 9
+move 2 from 8 to 7
+move 1 from 3 to 1
+move 1 from 5 to 6
+move 13 from 2 to 5
+move 1 from 9 to 2
+move 7 from 1 to 4
+move 2 from 2 to 5
+move 2 from 7 to 8
+move 1 from 6 to 8
+move 10 from 5 to 8
+move 3 from 7 to 2
+move 4 from 1 to 4
+move 12 from 4 to 2
+move 10 from 5 to 3
+move 6 from 2 to 1
+move 2 from 4 to 8
+move 3 from 4 to 8
+move 6 from 1 to 7
+move 1 from 7 to 5
+move 12 from 8 to 2
+move 3 from 4 to 9
+move 1 from 4 to 3
+move 2 from 9 to 6
+move 2 from 6 to 8
+move 1 from 1 to 3
+move 8 from 2 to 6
+move 4 from 1 to 8
+move 12 from 2 to 3
+move 4 from 6 to 8
+move 10 from 8 to 3
+move 14 from 3 to 8
+move 5 from 5 to 8
+move 1 from 7 to 8
+move 5 from 3 to 5
+move 4 from 7 to 2
+move 2 from 6 to 1
+move 4 from 3 to 7
+move 4 from 5 to 1
+move 21 from 8 to 6
+move 7 from 3 to 2
+move 1 from 5 to 1
+move 4 from 8 to 9
+move 16 from 6 to 1
+move 1 from 8 to 4
+move 5 from 9 to 2
+move 7 from 1 to 7
+move 10 from 1 to 3
+move 1 from 4 to 2
+move 6 from 6 to 5
+move 6 from 1 to 4
+move 4 from 7 to 9
+move 1 from 6 to 5
+move 5 from 7 to 6
+move 3 from 6 to 8
+move 1 from 7 to 6
+move 6 from 4 to 8
+move 4 from 8 to 3
+move 4 from 8 to 4
+move 17 from 2 to 1
+move 8 from 3 to 4
+move 5 from 4 to 3
+move 10 from 1 to 5
+move 11 from 3 to 5
+move 1 from 7 to 9
+move 3 from 6 to 4
+move 9 from 4 to 9
+move 7 from 1 to 3
+move 1 from 4 to 8
+move 7 from 5 to 4
+move 18 from 5 to 1
+move 13 from 1 to 6
+move 1 from 1 to 5
+move 1 from 1 to 6
+move 2 from 3 to 1
+move 1 from 3 to 1
+move 5 from 1 to 6
+move 4 from 5 to 8
+move 2 from 4 to 9
+move 1 from 1 to 9
+move 6 from 3 to 8
+move 1 from 4 to 5
+move 10 from 8 to 7
+move 16 from 6 to 7
+move 1 from 5 to 4
+move 1 from 7 to 2
+move 2 from 2 to 6
+move 2 from 8 to 5
+move 5 from 4 to 9
+move 2 from 5 to 9
+move 7 from 9 to 8
+move 2 from 6 to 9
+move 4 from 8 to 9
+move 7 from 9 to 7
+move 13 from 9 to 5
+move 10 from 5 to 1
+move 3 from 8 to 4
+move 5 from 1 to 3
+move 3 from 5 to 6
+move 3 from 9 to 7
+move 1 from 1 to 7
+move 2 from 1 to 3
+move 1 from 6 to 1
+move 4 from 3 to 8
+move 1 from 8 to 9
+move 1 from 8 to 7
+move 1 from 8 to 4
+move 1 from 9 to 7
+move 1 from 8 to 5
+move 2 from 4 to 3
+move 4 from 6 to 3
+move 1 from 5 to 1
+move 1 from 6 to 4
+move 2 from 4 to 5
+move 1 from 4 to 6
+move 1 from 6 to 4
+move 30 from 7 to 3
+move 1 from 5 to 1
+move 6 from 7 to 3
+move 2 from 1 to 7
+move 2 from 1 to 2
+move 2 from 2 to 1
+move 1 from 4 to 9
+move 3 from 1 to 2
+move 1 from 9 to 5
+move 2 from 7 to 1
+move 1 from 7 to 3
+move 1 from 1 to 9
+move 1 from 5 to 8
+move 1 from 1 to 2
+move 1 from 7 to 3
+move 1 from 9 to 4
+move 18 from 3 to 4
+move 1 from 5 to 9
+move 1 from 9 to 6
+move 1 from 2 to 7
+move 1 from 8 to 7
+move 1 from 6 to 3
+move 1 from 7 to 2
+move 14 from 4 to 6
+move 1 from 7 to 6
+move 15 from 6 to 4
+move 20 from 3 to 1
+move 5 from 4 to 9
+move 5 from 4 to 2
+move 15 from 1 to 7
+move 11 from 7 to 9
+move 2 from 7 to 6
+move 1 from 6 to 4
+move 1 from 6 to 3
+move 2 from 7 to 8
+move 10 from 4 to 3
+move 15 from 9 to 3
+move 1 from 9 to 7
+move 29 from 3 to 6
+move 3 from 1 to 6
+move 1 from 8 to 4
+move 2 from 4 to 3
+move 1 from 8 to 9
+move 4 from 6 to 1
+move 20 from 6 to 2
+move 5 from 1 to 9
+move 3 from 6 to 2
+move 4 from 6 to 3
+move 4 from 3 to 1
+move 4 from 1 to 4
+move 3 from 4 to 8
+move 6 from 3 to 4
+move 6 from 2 to 6
+move 1 from 7 to 1
+move 3 from 6 to 8
+move 6 from 9 to 3
+move 1 from 1 to 4
+move 1 from 1 to 7
+move 3 from 4 to 5
+move 2 from 6 to 4
+move 2 from 5 to 6
+move 4 from 8 to 7
+move 1 from 5 to 6
+move 1 from 8 to 4
+move 1 from 8 to 4
+move 2 from 4 to 9
+move 4 from 7 to 8
+move 4 from 4 to 3
+move 1 from 7 to 9
+move 4 from 8 to 6
+move 1 from 3 to 4
+move 1 from 3 to 5
+move 2 from 4 to 7
+move 4 from 6 to 3
+move 2 from 9 to 1
+move 2 from 7 to 4
+move 1 from 5 to 1
+move 1 from 3 to 4
+move 1 from 9 to 3
+move 4 from 4 to 5
+move 2 from 5 to 3
+move 1 from 5 to 7
+move 1 from 5 to 8
+move 2 from 6 to 4
+move 3 from 1 to 3
+move 21 from 3 to 5
+move 3 from 6 to 1
+move 1 from 7 to 1
+move 4 from 2 to 6
+move 1 from 8 to 2
+move 10 from 2 to 4
+move 4 from 1 to 2
+move 1 from 6 to 5
+move 2 from 6 to 9
+move 7 from 4 to 9
+move 1 from 6 to 5
+move 3 from 9 to 4
+move 6 from 2 to 8
+move 3 from 9 to 1
+move 8 from 4 to 3
+move 1 from 9 to 4
+move 21 from 5 to 7
+move 1 from 1 to 3
+move 2 from 9 to 6
+move 14 from 7 to 1
+move 2 from 4 to 1
+move 2 from 8 to 7
+move 1 from 8 to 2
+move 11 from 2 to 9
+move 8 from 9 to 6
+move 4 from 7 to 1
+move 1 from 7 to 4
+move 2 from 3 to 5
+move 1 from 1 to 6
+move 1 from 8 to 2
+move 3 from 7 to 5
+move 6 from 1 to 7
+move 1 from 8 to 7
+move 1 from 4 to 5
+move 4 from 6 to 5
+move 6 from 7 to 6
+move 3 from 9 to 1
+move 1 from 7 to 3
+move 11 from 5 to 1
+move 1 from 5 to 2
+move 9 from 6 to 4
+move 1 from 7 to 3
+move 2 from 6 to 1
+move 1 from 2 to 1
+move 1 from 2 to 6
+move 14 from 1 to 5
+move 1 from 8 to 4
+move 10 from 1 to 5
+move 3 from 5 to 1
+move 8 from 3 to 8
+move 16 from 5 to 7
+move 2 from 1 to 9
+move 3 from 8 to 1
+move 1 from 2 to 4
+move 6 from 7 to 4
+move 3 from 5 to 8
+move 2 from 3 to 6
+move 7 from 1 to 7
+move 14 from 4 to 3
+move 9 from 7 to 8
+move 2 from 4 to 1
+move 9 from 8 to 4
+move 7 from 8 to 2
+move 6 from 1 to 8
+move 1 from 9 to 7
+move 1 from 1 to 6
+move 1 from 9 to 6
+move 1 from 5 to 9
+move 1 from 5 to 3
+move 9 from 4 to 9
+move 3 from 3 to 6
+move 8 from 6 to 3
+move 1 from 2 to 9
+move 8 from 9 to 8
+move 6 from 2 to 9
+move 2 from 6 to 1
+move 7 from 8 to 6
+move 2 from 9 to 6
+move 8 from 7 to 8
+move 1 from 4 to 5
+move 9 from 3 to 5
+move 2 from 1 to 4
+move 1 from 7 to 4
+move 2 from 4 to 3
+move 11 from 8 to 1
+move 1 from 4 to 7
+move 1 from 7 to 8
+move 5 from 1 to 3
+move 4 from 6 to 4
+move 2 from 4 to 8
+move 1 from 4 to 8
+move 7 from 8 to 9
+move 1 from 8 to 9
+move 1 from 8 to 5
+move 18 from 3 to 2
+move 17 from 2 to 7
+move 6 from 5 to 4
+move 1 from 2 to 5
+move 4 from 4 to 6
+move 4 from 6 to 9
+move 15 from 7 to 9
+move 2 from 1 to 6
+move 2 from 7 to 9
+move 28 from 9 to 2
+move 1 from 6 to 7
+move 4 from 6 to 9
+move 3 from 1 to 7
+move 2 from 6 to 3
+move 1 from 4 to 7
+move 8 from 9 to 5
+move 13 from 5 to 3
+move 1 from 5 to 7
+move 3 from 9 to 4
+move 8 from 3 to 7
+move 28 from 2 to 5
+move 1 from 9 to 8
+move 4 from 3 to 4
+move 4 from 7 to 5
+move 2 from 3 to 9
+move 21 from 5 to 4
+move 1 from 5 to 7
+move 1 from 3 to 5
+move 3 from 5 to 7
+move 1 from 1 to 3
+move 3 from 7 to 3
+move 5 from 7 to 6
+move 10 from 4 to 8
+move 6 from 5 to 4
+move 1 from 9 to 3
+move 15 from 4 to 5
+move 10 from 4 to 7
+move 3 from 3 to 7
+move 1 from 3 to 4
+move 1 from 3 to 4
+move 7 from 5 to 1
+move 2 from 4 to 7
+move 1 from 9 to 2
+move 2 from 6 to 9
+move 1 from 5 to 3
+move 1 from 3 to 8
+move 10 from 7 to 9
+move 2 from 8 to 1
+move 9 from 9 to 2
+move 1 from 4 to 3
+move 9 from 8 to 7
+move 1 from 2 to 8
+move 5 from 5 to 4
+move 1 from 3 to 2
+move 5 from 4 to 3
+move 3 from 5 to 9
+move 6 from 7 to 3
+move 1 from 6 to 5
+move 5 from 9 to 7
+move 2 from 5 to 6
+move 3 from 6 to 7
+move 4 from 1 to 4
+move 6 from 2 to 7
+move 17 from 7 to 5
+move 1 from 6 to 1
+move 5 from 3 to 6
+move 10 from 7 to 2
+move 1 from 8 to 4
+move 1 from 9 to 8
+move 3 from 4 to 1
+move 1 from 7 to 4
+move 5 from 5 to 9
+move 2 from 8 to 7
+move 3 from 3 to 7
+move 4 from 2 to 3
+move 3 from 4 to 6
+move 7 from 5 to 8
+move 7 from 2 to 8
+move 4 from 9 to 8
+move 12 from 8 to 3
+move 17 from 3 to 2
+move 1 from 7 to 9
+move 1 from 3 to 9
+move 3 from 9 to 1
+move 2 from 5 to 1
+move 1 from 3 to 5
+move 4 from 5 to 8
+move 6 from 8 to 1
+move 17 from 2 to 3
+move 13 from 3 to 2
+move 1 from 3 to 9
+move 1 from 8 to 4
+move 1 from 4 to 8
+move 1 from 9 to 1
+move 2 from 7 to 2
+move 8 from 6 to 2
+move 2 from 7 to 5
+move 9 from 1 to 3
+move 13 from 2 to 9
+move 6 from 1 to 4
+move 6 from 4 to 5
+move 3 from 8 to 1
+move 2 from 1 to 8
+move 8 from 5 to 7
+move 2 from 3 to 1
+move 9 from 3 to 1
+move 3 from 8 to 2
+move 1 from 1 to 9
+move 1 from 3 to 9
+move 6 from 7 to 3
+move 4 from 2 to 7
+move 14 from 1 to 6
+move 2 from 3 to 9
+move 3 from 3 to 7
+move 6 from 2 to 1
+move 2 from 1 to 2
+move 9 from 6 to 3
+move 11 from 9 to 5
+move 9 from 7 to 6
+move 6 from 6 to 2
+move 1 from 1 to 8
+move 5 from 9 to 4
+move 1 from 8 to 5
+move 9 from 2 to 7
+move 10 from 5 to 8

inputs/day6.tt

@@ -0,0 +1 @@
+cmpmbppqmqsqzzrrswrrnqrnqqjzjvzzqvzvjvnnlclrrjhrrrnggmgwwdhhfttmmjrjzrzrhrbrgbrbsbjbcjjvpjjcvjvttfwffjtffqqqldqllhthhljhllfffbfbzbczzznmznnrrtgrgppdcppdfpfjjrggpjgjwgjwgghdggzzshzhrhttmhhdqhqsqgglhljjbggjhggfsfvfggrmggwwbwvvwssqtqzqlqvlqqvtthjhjrjssclscsszhzbztbbdhdbbqfbqqvdqdjjjspsqslsnlljnljjhttdtbdttjpjggtfftlldpdzzqhzqqcwwvggmgmppmhpmpddgjjbzbmzmllndldblbwbswsbbmzzwnnpdndzznmnjnjmnnzwwrqwrqrvqvqmmbmhmzzdqqfnqqgnqqfppmnnqzzvvcfclcrrzfzrzttchttshsphshddrgdggvwgvwwjjzbbprrgwrrcttwbwpwfffqppwnpwpqwwwbmwwjrjprrrsfrfdfrddvdzvzqzgzmgmpgpmmpspdssdlsldsdwssgzgddttqpphllvbvccjzjppffsjsbbvnbvbttgwtgtftzzlhzzjvzvsvtsttfrfrsswpwnwccqtqrqqrhqhjhccpfpgpjgpprnprrscctddqmdqqncqctqqrpqrprwpwnwnrnccmfmdfmfdfnfdnnphhbhttsszgssvhhprprnrsrrvggdllvfvrvbrbsrbrpphhqbbhllpttjmttrstszzwllbsbzzgmzgzbzcbcbjcbbjdjpjtttwggqhhpzpzszqqzhqqhrhlrrrvnrnqrqgrqggzccnnjrrcmmzvmmvtmtltvvlzlmmbnmmbbclljnjhhbjbhbjbbfcbfcfbbqwwftfhttwvwhhwfwcffwvwmmwtwftfjttwdtwdtwttqnttmdtdjtdjjlzjzhjhwwnbbmdmhhjmhmjjwmmpsmmhrrfnnqrqjrrpmpjpzpbzpztppswsmsnnlnppscsgcgsccsfcctbtcctvcvhvjhhccppbrbcrbrmbmvmllnmllgfgmgdmmslmlrmllhttgrrsttlmmnrrrlqqsjjddzzsbsdbbrjbjvbbfwwwglljplpglltlztzvtzzmbzbmbmcchlchcnhccbhhhzrrglgmgwwwwrddvmmvdvvpjpnpspmpsmpsscrrphpdhdllrsspcspsqslsspbbmcbmmdhdwhwpphfhmmfhmhjmjrrhtrtffsddwsddwccvncczlzjzdjzddszdsstgtbthhjhddwppvhvvvwrvwrrpspjpvjjsmsccszzgpzzmjzmzvmvrmmgbglgppbfppvvqffgdgtgpgdgnghhbhgbbpbdbrrjrtjtggvzzvttwbwlbwbttrbttvdttpctcrtrccddfrrmqqjrqqsvqsqzsslnlggmrggnllvdvbvmbmsmwmfmvvdwvwbbnddvfvzzjppbpgpvgppblbzznsscwssqppgbbfwwfmfzzqqgnnjnffvbfvbbfllbhlltvtnvnbnsnddcjcbjbbjpbbhhjghhqjjlttnmmhwmhwwddlppsjppgtthllsclcvvlfvvvlzvlvcccrhrrvqrvvzrvzrrmqqbtbnnwssvhvtttnsttrnnghgdggmgdmmnbnhbhdbddvppvhvlvttzmttljlflvfvpfpwffqbffjllnvlltslsttrvrdrmddtwdwmmlplhlnlffmzzrssvsgsffzjfjcffrcrppzfzbbtltjljtjftfmmmrjmjqmjqmjqmjqjsqqhzzhdhrrcwwbcltfjdgmhvmqmmsclsdgmdqzcvzznwgtdbzgvlpzvdqrvwpmndtzmdpznnplmbvvmffdpbjztvzpwffvqbwmvbmtwjrdpngrftvgznmtzwzmsrvpgpzjcdwvnqplfgncgcdtjbhcqztgqpdhwlmrjbzhcfhnzqmpzzghzpfzbgwmlqztnbdnntgdcfssgzqndhfwdtrbpzbmqjgjflmcllscjnnnrzzsjhnwptjlbhpcwwhsvqqlvjzghnwvzmwtbjgwfgmpdfcjfswvqzwdbnvlwfbmdcjvgjcdhjfbjccsjqrgdrhrjnhgpvvfjqvfwqpgmgfsbsnlrfnbtpzljmzrjmjlldgbvvwbnpqgsnzzmswtwgshdlwhsttdjlhnnlgbprwltbppttctttftrmbjccvwtljqffrcpwnwjgcwjnhmphfsnbfdnfbvzqqlwbnjjdvplrjbflcrwjtrngwzznzhsmnwzfbpjrdmjlwzvrvrblrscjlrmswjpbrtjjbsgzwjnfwwgmnbbppqfnlmfsbpwbdnjmrcvqdhhvrrvmghlbbpfsqzsnbjvrvthnrhlttsnlbgvsdvsmncdglrgpsqjqthnlrhnzpnnjgvrnmdnrtjbmlppfppnmgjhtbzpztdmclgbqjzsgfjllplpnnmjhgpcfcpcmbnwjsdmfmrqvqvjfsrnqhbrzdvwcsmmjvqpjnzbgrhwcwggvvjzbrswplgvbbqhdlqptzjvzcznspjbpvfmgbcfjbgmztmqtlzmzzzpmcdmmvhvnphpcfwcmwqwwqvmwpwhhnspmhrdmjblzhhlphwldfclsfjbzhjglvllldnmtjtwqtztfcvjdngslhnsmmlwlpzdbrrthtwfpjfvfljddplfgnhcnwwmmpgwwspnsprsvprccwvvljwbqwrzqjmwfrnnjbrfsrglnrwdfnsswqwsbpplgnfnvvvhqwmtgsdwmvnzmbjpbscdtcrmsllljwlntjzpwqvvnznmfddtgrmqbdsczhtvjdwrwvjccrqnjlnqbvqhhvnmqmrmnqllcjzcjgzwctrntjsnhrwmcqzrwzzqgqlmbqczlgtmtwlztclhwcjsgbdlfrppwrpbnpgsjfhprvzjwnpdwsjwmdcbmljclcgcnsqcpzgvrrbnnhjhblgnpcbzbcdmgjmpmpcwwdngmggmfqcjcwrzblsfmrslbblhdlwjqrrgtnvcfsccbdgnjcztrblrwbrvdzcnnshwzzvgcqwpqmjzhzlllbtzmcqpnwwqqlcjtrrzfmdpmpblmwztwqdgbmtfggjwnmffzvszgdmhfvflthzmwqgqvgmldzpbwbdvrjldhbnzsthqsczttbbthzgzmmrcmzmzmjfrhbtmsbqrbnsnzzfpvwlwpszdptljqphrdznhbwbfdfhsrqnmlqdcdgbrbsmgwwbbjsmwhzgmqtmfbndzlmlvmrrvrmqbjqbhhqtvvgbhbmsrtljwmtnhtpwjvlrgqljvgpsfrwgdfbcwlmvfdrrlgwvvzvcftwpjhcplgwvqbzftjfbmmcpvrrsvbnwqdhtlsfcjzlrmwvgvgwpbffsrrpdpssqhqrqdglnwcqznzlqqvjzpsdnpwfqtfjqhqwvlfpwrqqmntcnnbfprlwrfdwstvbpjmjdbcdffmwvqbsdnvcgrtccvcfzpwjscmrtbbjjnmlcztbldfnwbqcpqlshthrcbdrfldcmhtgwrgqhnnglbzgdgglzjbgjtdvgzgrspjtbhpmzvpplgjpjbthmjtwqqzsslnfrtmpznbqvmccqccrtdvrssmdgrptsjglvrmlcwfllptczvpgwbdfbrnpzdzmpfjwdhqlsqlzlzrwcsmhcmjhhfhfvcdrzhsmqbwcfshslsnswpslbjnrzqllwbnddhrngmjqtnvhrjpcpmggvgqbwtwcmbvhnwggdrzfgmhhvpqzbvlghsvgmhngwdsrwlzffbpzqmfzvbhbjvqlcswhctpcqnptrvlwblnvpfbzsjnsdjnhqbzddsnthhcfbcvmqgfmvztlcwjbmdtgvgwqbqgdrvbgbnbcnqwzfzqpsgbvtwlphgvqlzshndcbffzcbllgzrzrnhdvqnvtndhcdslqbbhcdftlmnltmsmgfcgvmpbsljdbthjtqlfbmczznwcvfcsnftsnpzcwfqbfhjpswzfzfswfgtzplppsglsdncblddsmftmfdmmnsjjgg

inputs/day8.tt

@@ -0,0 +1,99 @@
+201111211202111301212201403141040230323033312212134523125000140404300230341330300221220012110101011
+011220103113221111202122124010033421404432343233535151335133353340034134034332440001110102010010220
+122121120300202230411332402004044235424325455343231124521355323541403402031010313440121321321322221
+200021211323122312440342411331012332252341254144425451345233324423152201041200212200331121111210011
+022213121203213301221100041021415245132424534145512125411151335224315551123141404223410032032000022
+101131310332214402243114310442325141344331525541232153453225442351235123130234413214313330121121101
+101102011001014411302320032155533351421345311554341111544153414344211242545240114004311012303003230
+101023122212322231421422241433315213542415532226334465642351151321144451152132311230002433230001110
+101102012000130221414322332331245251153242654525425363234533655232423135443124134230202313201000123
+113023100223214000232555442143243135556634652423636245645335623323351235221252344243002420033131123
+021023012400222133115232154155255455226363244263663662564362455342612241224452135301204334403311211
+011011120014313211333124154235235522553465256455435352362343343356452125515224121432404101240133203
+011310103034221123212123555245622666563625344356454344325522453265262433154414231333142413311331323
+303301320412010454251154421242542562366466364652264364325544554624545256254413534434331434344310311
+211332131030004243315521542363644424356453643345544752562524552255353324654134525543231434112230100
+002102403432244535421254566353326346446265345654366646566543552562536326635315453214125414141214102
+331140031313041444123423526426422252527375577546753455777737547626364645566461554234123523430311313
+330401323101512253253516526653653542734767336644345445665364743533364355534236521342413154132413122
+330411204212311445244535522655343573747374364345564574375763553465534526662642244443311121403103124
+023332003431144254543626226245566455744465356337347475347374637637653442626233624414255134423423042
+244210400021232153266652252325756653575474576355747475663555354556777566436342344532415443212134234
+243022342335541213565253544236755753776564447733743446775775654547533666422423326624134345443023202
+400214112533143341263455565263566576767643378645664845674353474533736575624522664521123334133420203
+314412035353435253634446462463763443376476847467648547566465453356757464475343435464134531133123324
+210413325433315134452365563547564744658868746684566644877466576346553654766362254362221413424430422
+440400434542543525543663633667763537556667668747746756785587458767563547637623326226661151144334010
+203031334152125642466635547657766584664687848767577545486757587488654373354446324524564152231113112
+241001452244343336664255646743677756848545865758665674685886656454447657464556245442364333553250131
+014023224515325454455574567445744885857785756585855854887668646555746475564455722536445351532451133
+240034522142434662453346666663547675448567854897757695674874464454475574464737776424553231541143102
+202432344512662423437374345345446848546655697769865799957684557848684543374647545532223321334341333
+123325111441445225523673536445447568774877677796777678697975965546774547536673437544656344512135444
+310254211535525232233446556788846647746897588857688579889788855477655648566666635426236522424112342
+034313254213653456477557533774786647669769587699976668986696667747555648883667447465462526444143342
+143141533334542466354344755484874754698685556789559989587957999587645467546553365742323424612353420
+023355513126235334753777564744657489776767789956675687857787669856547584455737646446352333233414322
+223531421366552557666573477756875578695968796778976887859959556598778688876655735777332545512434212
+324553233365452565557437476777687565788999986896686778796755558896856684686773556344634525262453452
+213242455253625376773454787557859959899988899999978889797885876979769647857487767764545335245255213
+153212131552226337374543645684765767796896876966989866686867979876788867784675754744525622655431425
+043231154325334367553646774578457959887979898666866967789799775569887978674668454463732263426513135
+335542344226645477333775676444769565755967887779666696689698896656597875884556557743462633443124152
+335323556552426765767775874764689686976988996666779796996969887796587577847457535454643262525413534
+031342356243536356663654658854697858887697788666879779897996867856867654685767655656766443625531132
+335345116666525747477647458845785958767699688899778878776776988777668657478884857465753336533142152
+431315146645532647447566887678656986686996889897797878877768979656986556466744563333546332255135135
+345455244545432335674458658587555587989897879999798888988976986779787768754855836367363664566413353
+512151454564534653477764765466595799679979878789789879998767887865797755765458674344355656253343334
+223351266325633575663774564489796879687898688978997788798999779796767956656764647364636656442223522
+453333263535357446366584455459557799968998879988898977978787696768578657875454473547567326532334111
+522431356454444356554374544846975859978878977879979897898976787967789578746656874774547443245541214
+524451243233255555453685476745875568898798878799987879899778979895889689545784464464664644546653534
+351343243662255667567757864679695778779676778997998897779866887675677768667848643753754363345434313
+422125253344236737334386654576687898997799677887987777887686867895579866465457665345774366464351334
+421312154235324535653777678786976887577869769887898799897698686878966689468464555357752255363554413
+134231353356532647544747466746997955968966989988799777786898667996595997676454734577542423644111423
+254152156456563434474788846574786769698798686897989989968667786695865858667776755455566654264132134
+325554124554345334573567875686789766777879789968978788797868997657598864755765764646452636426312235
+054421142246245654657458647846877765696688798786967788769769989568865887586878654537663362654432212
+313445116364256444775744655676857696698998799776867668888686999587568854476648764345346236246232241
+143114554233652245375455887678668996669686996999796887877777686757966588885786556444465552442533324
+251331534446564265464364486744686986675876988887767766688896987878765756544754746565355566534235144
+043312335432626344536643484678579666899596766779666899678676979556965588747766665377565544465543531
+242445211324566636637644588748444588767957766968968978786788586989657745475556775355542555362121442
+243253334442556446446767754567476657566957796656988796979699968699856846446535677455225423345132114
+431231245536522344674653635685865849787997986689665576586668667768645854645567336572252526524445114
+431352413545636624334373564776844687557987796967657766857786797968874766656443453336264564435235253
+320554134146445446354475753477858558775599755977987865757897668588588666485457344365453335234122310
+333244132156433233245637373688448784459857795676588655998585696485786865554473364636554335355224153
+113345451542245623453737457745456844757575897756758966757557585554868888643374344325656234154414322
+444045515145356432335647545655765786587886758778866688968984877775888576477747477332355221552413204
+111132223523345626324747765577376687656748476986565687576768448558884573773436752362454612221523223
+022004333435234546566255554533348546676766478456868467444674448586545655467537436553554433123421120
+333231125332152663266433667535537778555667876464765456758647764446877656465367323254523253352510413
+122420553331452433333353464676537646864677748867574756565588454444657764464332235454635225432522004
+120442052444321222226423365375645435468656658447866466574856466886677654746522644365264535531343440
+421404315233111265423463525657764565658784687768567656464684688763534555373553346542234345145442244
+331231242152133344456244633655545655745345664668565885467456447677744435752654334432232553354400240
+203040023155425242246555225235473556554656638646764676455766756555576576336522336454124215215404311
+020211430251454452662234222644467675755747776474545447746753537773655567623542436262213453434423110
+121222320253353333233652252225333343646436546477634345533376676557363636362664225322253234514301234
+131331122021145511555626563643364773337345554777664437674344775376757362452454652245212143131222333
+333033033132243135213222343542265476344656453763774355443644566737723253264252451243142121312244244
+002204430244435144434515354453332632665637375363445456667774576662453443646454532431524140202312242
+121314024424022223215424644426642356264655357667436346735353466356245254264535315425323522230030301
+021012030013043135124451434556465446663353754754774574457663344656553456246613524313152023413220330
+323211122442404125421353336334324324563564625653556556652432462453235325362525324531133444231304313
+221212242244240214314234323556334553353656452662622464552256465443444565421332134313540102100220131
+003121311143322334241133533143446663652225433332652353542523664466644655215235421122322101243201202
+302132313044423014553344334444135543546462343625633335635554425246463354552555544450021401441212013
+211320002042341321404351332421424422345645623225243263532425463422453534224512413420003024103010003
+121321233203044310220544225434555523322652465244626362265436622244421244514121221412000233313302001
+033330113222134212123014455534453323452146635634333522662322621122442141151325121244124021100331010
+003211203200004004334013134312421412135211541122652523655533352215155345414442033214440410020130131
+000310132331000133341101412343222324131145425545545422415232421245514432554132410203120223330322031
+010222121001201110014203011212115523421525414334222144411533424243442552424243301203331330320011211
+202210333132013102411304342331452231412212555243242135532222244343234442033031110220213320300213112
+021110333231201113044040042034211335553321154444412432243122252145522223420412102042311030021122200
+212222233011232310420321434331332422434543133323345512355241515513414041433311311240302022331021120

src/day1.ml

@@ -1,4 +1,5 @@
-let part1 lines =
+let part1 () =
+  let lines = Utils.lines_of_input 1 in
   let rec most_calories most current lines =
     match lines with
     | [] -> most
@@ -10,7 +11,8 @@ let part1 lines =
   most_calories 0 0 lines
 ;;
 
-let part2 lines =
+let part2 () =
+  let lines = Utils.lines_of_input 1 in
   let accum_calories elves calories =
     match elves, calories with
     | elves, "" -> 0 :: elves
@@ -23,9 +25,12 @@ let part2 lines =
   | _ -> failwith "wtf"
 ;;
 
-let print () =
-  let lines = Utils.lines_of_input 1 in
-  Printf.(
-    printf "Day 1.1: %d\n" @@ part1 lines;
-    printf "Day 1.2: %d\n" @@ part2 lines)
+let%expect_test "Day 1.1" =
+  Printf.printf "%d" @@ part1 ();
+  [%expect {| 75622 |}]
+;;
+
+let%expect_test "Day 1.2" =
+  Printf.printf "%d" @@ part2 ();
+  [%expect {| 213159 |}]
 ;;

src/day10.ml

@@ -0,0 +1,57 @@
+open Containers
+
+let parse_lines () =
+  let lines = Utils.lines_of_input 10 in
+  let _, state_history =
+    List.fold_flat_map
+      (fun (cycle, reg) instruction ->
+        match String.split ~by:" " instruction with
+        | [ "noop" ] -> (cycle + 1, reg), [ cycle + 1, reg ]
+        | [ "addx"; num ] ->
+          let num = int_of_string num in
+          (cycle + 2, reg + num), [ cycle + 1, reg; cycle + 2, reg ]
+        | _ -> failwith @@ Printf.sprintf "failed to parse '%s'" instruction)
+      (0, 1)
+      lines
+  in
+  state_history
+;;
+
+let part1 () =
+  let history = parse_lines () in
+  history
+  |> List.find_all (fun (cycle, _) ->
+    match cycle with
+    | 20 | 60 | 100 | 140 | 180 | 220 -> true
+    | _ -> false)
+  |> List.fold_left (fun acc (cycle, reg) -> acc + (cycle * reg)) 0
+;;
+
+let part2 () =
+  let screen_width = 40 in
+  let history = parse_lines () in
+  history
+  |> List.map (fun (cycle, reg) ->
+    let column = Int.(cycle mod screen_width) in
+    let sprite_dist = abs @@ (reg + 1 - column) in
+    if sprite_dist <= 1 then '#' else ' ')
+  |> List.chunks 40
+  |> List.map String.of_list
+  |> List.iter Fun.(print_string %> print_newline)
+;;
+
+let%expect_test "Day 10.1" =
+  Printf.printf "%d" @@ part1 ();
+  [%expect {| 14760 |}]
+;;
+
+let%expect_test "Day 10.2" =
+  part2 ();
+  [%expect {|
+    #### ####  ##  #### ###  #  # ###  #####
+    #    #    #  # #    #  # #  # #  # #   #
+    ###  ###  #    ###  #  # #  # #  # ### #
+    #    #    # ## #    ###  #  # ###  #
+    #    #    #  # #    # #  #  # # #  #
+    #### #     ### #### #  #  ##  #  # #### |}]
+;;

src/day11.ml

@@ -0,0 +1,87 @@
+open Containers
+
+type monkey =
+  { mutable items : int list
+  ; mutable inspected : int
+  ; operation : int -> int
+  ; test : int -> int
+  ; test_num : int
+  }
+
+let parse_monkeys () =
+  let lines = Utils.lines_of_input 11 in
+  let rec parse lines monkeys =
+    let lines = List.drop_while (String.equal "") lines in
+    let lines, rest = List.take_drop_while Fun.(String.equal "" %> not) lines in
+    let lines = List.map Fun.(String.trim %> String.split ~by:" ") lines in
+    match lines with
+    | [ [ "Monkey"; _ ]
+      ; "Starting" :: "items:" :: items
+      ; [ "Operation:"; "new"; "="; "old"; op; op_num ]
+      ; [ "Test:"; "divisible"; "by"; test_num ]
+      ; [ "If"; "true:"; "throw"; "to"; "monkey"; if_true ]
+      ; [ "If"; "false:"; "throw"; "to"; "monkey"; if_false ]
+      ] ->
+      let items =
+        List.map Fun.(String.replace ~which:`All ~sub:"," ~by:"" %> int_of_string) items
+      in
+      let op = if String.equal op "+" then ( + ) else ( * ) in
+      let operation =
+        match op_num with
+        | "old" -> fun old -> op old old
+        | num -> fun old -> op old @@ int_of_string num
+      in
+      let test_num = int_of_string test_num in
+      let if_true = int_of_string if_true in
+      let if_false = int_of_string if_false in
+      let test score = if Int.(score mod test_num) = 0 then if_true else if_false in
+      let monkey = { items; operation; test; test_num; inspected = 0 } in
+      parse rest (monkey :: monkeys)
+    | _ -> monkeys
+  in
+  Array.of_list @@ List.rev @@ parse lines []
+;;
+
+let throw item monkey = monkey.items <- List.append [ item ] monkey.items
+
+let round monkies ~manageable =
+  let divisor = Array.fold_left (fun acc monkey -> acc * monkey.test_num) 1 monkies in
+  let destress score = if manageable then score / 3 else Int.(score mod divisor) in
+  monkies
+  |> Array.iter (fun monkey ->
+    monkey.items
+    |> List.iter (fun item ->
+      let item = destress @@ monkey.operation item in
+      let throw_to = monkey.test item in
+      throw item monkies.(throw_to));
+    monkey.inspected <- monkey.inspected + List.length monkey.items;
+    monkey.items <- [])
+;;
+
+let solve rounds ~manageable =
+  let monkies = parse_monkeys () in
+  for _ = 1 to rounds do
+    round monkies ~manageable
+  done;
+  monkies
+  |> Array.to_list
+  |> List.map (fun monkey -> monkey.inspected)
+  |> List.sort Int.compare
+  |> List.rev
+  |> List.take 2
+  |> List.reduce ( * )
+  |> Option.get_exn_or "aoc goofed up the input"
+;;
+
+let part1 () = solve 20 ~manageable:true
+let part2 () = solve 10_000 ~manageable:false
+
+let%expect_test "Day 11.1" =
+  Printf.printf "%d" @@ part1 ();
+  [%expect {| 56350 |}]
+;;
+
+let%expect_test "Day 11.2" =
+  Printf.printf "%d" @@ part2 ();
+  [%expect {| 13954061248 |}]
+;;

src/day12.ml

@@ -0,0 +1,100 @@
+open Containers
+
+type node =
+  { char : char
+  ; mutable visited : bool
+  ; mutable distance : int
+  }
+[@@deriving show]
+
+let parse_grid start_anywhere =
+  let start_nodes = ref [] in
+  let end_node = ref @@ Vec2.origin in
+  let grid =
+    Utils.lines_of_input 12
+    |> Grid.of_lines (fun char -> { char; visited = false; distance = Int.max_int })
+  in
+  Grid.iter grid (fun pos ->
+    let node = Grid.at_e grid pos in
+    match node.char with
+    | 'E' -> end_node := pos
+    | 'S' -> start_nodes := pos :: !start_nodes
+    | 'a' when start_anywhere -> start_nodes := pos :: !start_nodes
+    | _ -> ());
+  grid, !end_node, !start_nodes
+;;
+
+let reachable f t =
+  let height c =
+    match c with
+    | 'S' -> 'a'
+    | 'E' -> 'z'
+    | c -> c
+  in
+  Char.compare (height f) (height t) >= -1
+;;
+
+let get_neighbors grid node_pos =
+  let node = Grid.at_e grid node_pos in
+  Vec2.directions
+  |> Iter.of_list
+  |> Iter.filter_map (fun dir ->
+    let neighbor_pos = Vec2.(node_pos + dir) in
+    match Grid.at grid neighbor_pos with
+    | Some neighbor when reachable node.char neighbor.char -> Some neighbor_pos
+    | _ -> None)
+;;
+
+let path_distance grid goal start_nodes =
+  let set_info position (dist, visited) =
+    let node = Grid.at_e grid position in
+    node.distance <- dist;
+    node.visited <- visited
+  in
+  let get_info position =
+    let { char = _; distance; visited } = Grid.at_e grid position in
+    distance, visited
+  in
+  Utils.djikstra
+    ~set_info
+    ~get_info
+    ~eq:Vec2.( = )
+    ~get_weight:(fun _ _ -> 1)
+    ~get_neighbors:(get_neighbors grid)
+    ~goal
+    ~start_nodes
+  |> Option.get_exn_or "couldn't find"
+;;
+
+let%expect_test "Day 12.1" =
+  let grid, goal, start_nodes = parse_grid false in
+  Printf.printf "%i" @@ path_distance grid (Some goal) start_nodes;
+  [%expect {| 497 |}]
+;;
+
+let%expect_test "Day 12.2" =
+  let grid, goal, start_nodes = parse_grid true in
+  Printf.printf "%i" @@ path_distance grid (Some goal) start_nodes;
+  [%expect {| 492 |}]
+;;
+
+let%expect_test "Day 12 test" =
+  let grid, goal, start_nodes = parse_grid false in
+  let _ = path_distance grid None start_nodes in
+  let print_dist_to pos =
+    let node = Option.get_exn_or "invalid pos!" grid.Grid.%(pos) in
+    Printf.printf "%s %c %i\n" (Vec2.show pos) node.char node.distance
+  in
+  print_dist_to goal;
+  print_dist_to Vec2.(goal + right);
+  print_dist_to Vec2.(goal + down);
+  print_dist_to Vec2.(of_tuple (121, 23));
+  print_dist_to Vec2.(origin + right);
+  [%expect
+    {|
+    (149, 20) E 497
+    (150, 20) z 498
+    (149, 21) y 496
+    (121, 23) a 138
+    (1, 0) b 21 |}]
+;;

src/day13.ml

@@ -0,0 +1,55 @@
+open Containers
+
+module Packet = struct
+  type t =
+    | I of int
+    | L of t list
+  [@@deriving show { with_path = false }]
+
+  let of_str line =
+    let open Utils.Parse in
+    let int = int >>= fun i -> return @@ I i in
+    let packet =
+      fix (fun packet ->
+        let lb, delimited, rb = char '[', sep_by (char ','), char ']' in
+        let list = lb *> delimited packet <* rb >>= fun p -> return @@ L p <?> "list" in
+        choice [ int; list ])
+      <?> "packet"
+    in
+    Result.get_or_failwith @@ parse_string ~consume:All packet line
+  ;;
+
+  let rec compare a b =
+    match a, b with
+    | I a, I b -> Int.compare a b
+    | L a, L b -> List.compare compare a b
+    | (I _ as a), (L _ as b) -> compare (L [ a ]) b
+    | (L _ as a), (I _ as b) -> compare a (L [ b ])
+  ;;
+end
+
+let%expect_test "Day 13.1" =
+  Utils.lines_of_input 13
+  |> List.filter Fun.(not % String.is_empty)
+  |> List.map Packet.of_str
+  |> List.chunks 2
+  |> List.mapi (fun i packets ->
+    match packets with
+    | [ a; b ] when Packet.compare a b < 0 -> i + 1
+    | _ -> 0)
+  |> List.reduce_exn ( + )
+  |> print_int;
+  [%expect {| 6272 |}]
+;;
+
+let%expect_test "Day 13.2" =
+  Utils.lines_of_input 13
+  |> List.filter Fun.(not % String.is_empty)
+  |> List.map (fun line -> false, Packet.of_str line)
+  |> List.append [ true, Packet.of_str "[[2]]"; true, Packet.of_str "[[6]]" ]
+  |> List.sort (fun (_, a) (_, b) -> Packet.compare a b)
+  |> List.mapi (fun i (is_divider, _) -> if is_divider then i + 1 else 1)
+  |> List.reduce_exn ( * )
+  |> print_int;
+  [%expect {| 22288 |}]
+;;

src/day14.ml

@@ -0,0 +1,190 @@
+open Containers
+
+type tile =
+  | Empty
+  | Rock
+  | Sand
+  | Start
+  | Path_D
+  | Path_L
+  | Path_R
+
+let char_of_tile _ = function
+  | Empty -> '-'
+  | Rock -> '#'
+  | Sand -> 'o'
+  | Start -> 'v'
+  | Path_D -> '|'
+  | Path_L -> '/'
+  | Path_R -> '\\'
+;;
+
+let is_sand = function
+  | Sand -> true
+  | _ -> false
+;;
+
+let parse_line line =
+  let open Utils.Parse in
+  let vec = Vec2.of_tuple <$> both int (char ',' *> int) in
+  let vec_list = sep_by (string " -> ") vec in
+  Result.get_or_failwith @@ parse_string ~consume:All vec_list line
+;;
+
+let draw_rocks grid points =
+  let open Grid in
+  let _ =
+    points
+    |> List.reduce (fun a b ->
+      iter_region grid a b (fun pos -> grid.%(pos) <- Rock);
+      b)
+  in
+  ()
+;;
+
+let parse_grid lines start =
+  let points = Iter.map Fun.(parse_line %> Iter.of_list) lines in
+  let Vec2.{ x = lx; y = ly }, Vec2.{ x = hx; y = hy } =
+    points |> Iter.flatten |> Iter.cons start |> Vec2.find_bounds 0
+  in
+  let pad_floor = 1 in
+  let pad_x = 2 in
+  let height = 1 + hy - ly + pad_floor in
+  let lx = min lx (start.x - height) in
+  let hx = max hx (start.x + height) in
+  let width = 1 + hx - lx + (pad_x * 2) in
+  let extra = Vec2.of_tuple (lx - pad_x, ly) in
+  let start = Vec2.(start - extra) in
+  let open Grid in
+  let grid = init ~width ~height (fun _ -> Empty) in
+  grid.%(start) <- Start;
+  Iter.iter
+    Fun.(Iter.map (fun point -> Vec2.(point - extra)) %> Iter.to_list %> draw_rocks grid)
+    points;
+  grid, start
+;;
+
+type is_done =
+  | Continue
+  | Done
+
+let rec drop_sand_abyss draw_path grid start =
+  let d = Vec2.(start + down) in
+  let l = Vec2.(d + left) in
+  let r = Vec2.(d + right) in
+  let open Grid in
+  match grid.%(l), grid.%(d), grid.%(r) with
+  | _, None, _ -> Done
+  | _, Some Empty, _ ->
+    if draw_path then grid.%(d) <- Path_D;
+    drop_sand_abyss draw_path grid d
+  | Some Empty, _, _ ->
+    if draw_path then grid.%(l) <- Path_L;
+    drop_sand_abyss draw_path grid l
+  | _, _, Some Empty ->
+    if draw_path then grid.%(r) <- Path_R;
+    drop_sand_abyss draw_path grid r
+  | _, _, _ ->
+    (match grid.%(start) with
+     | Some Empty ->
+       grid.%(start) <- Sand;
+       Continue
+     | _ -> failwith "oh no!")
+;;
+
+let rec drop_sand_floor grid start =
+  let d = Vec2.(start + down) in
+  let l = Vec2.(d + left) in
+  let r = Vec2.(d + right) in
+  let open Grid in
+  match grid.%(l), grid.%(d), grid.%(r) with
+  | _, Some Empty, _ -> drop_sand_floor grid d
+  | Some Empty, _, _ -> drop_sand_floor grid l
+  | _, _, Some Empty -> drop_sand_floor grid r
+  | _, _, _ ->
+    (match grid.%(start) with
+     | Some Empty ->
+       grid.%(start) <- Sand;
+       Continue
+     | Some Start ->
+       grid.%(start) <- Sand;
+       Done
+     | _ -> failwith "oh no!")
+;;
+
+let rec drop_all_sand drop grid start =
+  match drop grid start with
+  | Continue -> drop_all_sand drop grid start
+  | Done -> ()
+;;
+
+let%expect_test "Day 14.1 example" =
+  let lines =
+    Iter.of_list [ "498,4 -> 498,6 -> 496,6"; "503,4 -> 502,4 -> 502,9 -> 494,9" ]
+  in
+  let start = Vec2.of_tuple (500, 0) in
+  let grid, start = parse_grid lines start in
+  drop_all_sand (drop_sand_abyss false) grid start;
+  let _ = drop_sand_abyss true grid start in
+  let count = Grid.count grid is_sand in
+  Printf.printf "%i grains\n%s" count @@ Grid.draw grid char_of_tile;
+  [%expect
+    {|
+    24 grains
+    -------------v-------------
+    -------------|-------------
+    ------------/o-------------
+    -----------/ooo------------
+    ----------/#ooo##----------
+    ---------/o#ooo#-----------
+    --------/###ooo#-----------
+    --------|--oooo#-----------
+    -------/o-ooooo#-----------
+    ------/#########-----------
+    ------|-------------------- |}]
+;;
+
+let%expect_test "Day 14.2 example" =
+  let lines =
+    Iter.of_list [ "498,4 -> 498,6 -> 496,6"; "503,4 -> 502,4 -> 502,9 -> 494,9" ]
+  in
+  let start = Vec2.of_tuple (500, 0) in
+  let grid, start = parse_grid lines start in
+  drop_all_sand drop_sand_floor grid start;
+  let count = Grid.count grid is_sand in
+  Printf.printf "%i grains\n%s" count @@ Grid.draw grid char_of_tile;
+  [%expect
+    {|
+    93 grains
+    -------------o-------------
+    ------------ooo------------
+    -----------ooooo-----------
+    ----------ooooooo----------
+    ---------oo#ooo##o---------
+    --------ooo#ooo#ooo--------
+    -------oo###ooo#oooo-------
+    ------oooo-oooo#ooooo------
+    -----oooooooooo#oooooo-----
+    ----ooo#########ooooooo----
+    ---ooooo-------ooooooooo--- |}]
+;;
+
+let%expect_test "Day 14.1" =
+  let lines = Iter.of_list @@ Utils.lines_of_input 14 in
+  let start = Vec2.of_tuple (500, 0) in
+  let grid, start = parse_grid lines start in
+  drop_all_sand (drop_sand_abyss false) grid start;
+  let count = Grid.count grid is_sand in
+  Printf.printf "%i" count;
+  [%expect {| 683 |}]
+;;
+
+let%expect_test "Day 14.2" =
+  let lines = Iter.of_list @@ Utils.lines_of_input 14 in
+  let start = Vec2.of_tuple (500, 0) in
+  let grid, start = parse_grid lines start in
+  drop_all_sand drop_sand_floor grid start;
+  let count = Grid.count grid is_sand in
+  Printf.printf "%i" count;
+  [%expect {| 28821 |}]
+;;

src/day15.ml

@@ -0,0 +1,167 @@
+open Containers
+
+let example_lines =
+  [ "Sensor at x=2, y=18: closest beacon is at x=-2, y=15"
+  ; "Sensor at x=9, y=16: closest beacon is at x=10, y=16"
+  ; "Sensor at x=13, y=2: closest beacon is at x=15, y=3"
+  ; "Sensor at x=12, y=14: closest beacon is at x=10, y=16"
+  ; "Sensor at x=10, y=20: closest beacon is at x=10, y=16"
+  ; "Sensor at x=14, y=17: closest beacon is at x=10, y=16"
+  ; "Sensor at x=8, y=7: closest beacon is at x=2, y=10"
+  ; "Sensor at x=2, y=0: closest beacon is at x=2, y=10"
+  ; "Sensor at x=0, y=11: closest beacon is at x=2, y=10"
+  ; "Sensor at x=20, y=14: closest beacon is at x=25, y=17"
+  ; "Sensor at x=17, y=20: closest beacon is at x=21, y=22"
+  ; "Sensor at x=16, y=7: closest beacon is at x=15, y=3"
+  ; "Sensor at x=14, y=3: closest beacon is at x=15, y=3"
+  ; "Sensor at x=20, y=1: closest beacon is at x=15, y=3"
+  ]
+;;
+
+type sensor =
+  { pos : Vec2.t
+  ; beacon : Vec2.t
+  ; dist : int
+  }
+[@@deriving show { with_path = false }]
+
+let taxicab_dist a b =
+  let x, y = Vec2.(abs (a - b) |> to_tuple) in
+  x + y
+;;
+
+let parse_sensor line =
+  match List.map int_of_string Re.(matches (Pcre.regexp {|-?\d+|}) line) with
+  | [ sx; sy; bx; by ] ->
+    let pos, beacon = Vec2.(of_tuple (sx, sy), of_tuple (bx, by)) in
+    { pos; beacon; dist = taxicab_dist pos beacon }
+  | _ -> failwith "parse error"
+;;
+
+let could_be_beacon sensors ignore_known pos =
+  sensors
+  |> Iter.fold_while
+       (fun _ s ->
+         let d = taxicab_dist pos s.pos in
+         if d <= s.dist && (ignore_known || not Vec2.(pos = s.beacon))
+         then false, `Stop
+         else true, `Continue)
+       true
+;;
+
+(*{[
+    equation for line
+      y = m*x + c
+
+    beacon range boundaries are made up of four lines:
+      slope  1 passing thru bx + dist + 1, by
+      slope  1 passing thru bx - dist - 1, by
+      slope -1 passing thru bx + dist + 1, by
+      slope -1 passing thru bx - dist - 1, by
+
+    to find the constant given a slope, plug a point into
+      c = y - m*x
+
+    constants are stored separately for boundaries with positive and negative
+    slope so that they can be handled separately
+      p1 = y - bx - dist - 1
+      p2 = y - bx + dist + 1
+      n1 = y + bx + dist + 1
+      n2 = y + bx - dist - 1
+  ]}*)
+let get_consts sensors extra =
+  sensors
+  |> Iter.fold
+       (fun (p_slope_consts, n_slope_consts) { pos; beacon = _; dist } ->
+         let p1 = pos.y - pos.x + dist + extra in
+         let p2 = pos.y - pos.x - dist - extra in
+         let n1 = pos.y + pos.x + dist + extra in
+         let n2 = pos.y + pos.x - dist - extra in
+         Iter.(
+           ( append p_slope_consts (of_list [ p1; p2 ])
+           , append n_slope_consts (of_list [ n1; n2 ]) )))
+       (Iter.empty, Iter.empty)
+;;
+
+let solve_part_1 lines scan_y =
+  let sensors = lines |> Iter.of_list |> Iter.map parse_sensor in
+  let p_slope_consts, n_slope_consts = get_consts sensors 0 in
+  (*{[
+      for a known y to intersect with a positive slope boundary:
+        y = x + p
+        x = y - p
+
+      and for a negative slope boundary:
+        y = -x + n
+        x = n - y
+    ]}*)
+  let intersection_xs =
+    Iter.append
+      (Iter.map (fun p -> scan_y - p) p_slope_consts)
+      (Iter.map (fun n -> n - scan_y) n_slope_consts)
+    |> Iter.sort_uniq ~cmp:Int.compare
+  in
+  let check x = could_be_beacon sensors false @@ Vec2.of_tuple (x, scan_y) in
+  let rec count_not_beacons count xs =
+    match xs with
+    | x :: next :: rest ->
+      (* if there is a region [x+1, next), the value of check
+         is the same for each point within it. intersection points
+         must be checked separately from the regions between them  *)
+      let intersection = if check x then 0 else 1 in
+      let region = if x + 1 < next && check (x + 1) then 0 else next - (x + 1) in
+      count_not_beacons (count + intersection + region) (next :: rest)
+    | _ -> count
+  in
+  count_not_beacons 0 @@ Iter.to_list intersection_xs
+;;
+
+let%expect_test "Day 15.1 example" =
+  Printf.printf "%i\n" @@ solve_part_1 example_lines 10;
+  [%expect {| 26 |}]
+;;
+
+let%expect_test "Day 15.1" =
+  Printf.printf "%i\n" @@ solve_part_1 (Utils.lines_of_input 15) 2000000;
+  [%expect {| 5525990 |}]
+;;
+
+let solve_part_2 lines range mult =
+  let sensors = lines |> Iter.of_list |> Iter.map parse_sensor in
+  let in_bounds = Vec2.(in_bounds origin @@ of_tuple (range, range)) in
+  let p_slope_consts, n_slope_consts = get_consts sensors 1 in
+  (*{[
+      boundaries only itersect if they have opposite slope.
+      to find the intersection, set equations to be equal and solve.
+         y =  x + p
+         y = -x + n        // set equal
+         x + p = -x + n    // add x and subtract p
+         2x = n - p        // divide 2
+      -> x = (n - p)/2     // substitute x into original
+         y = (n - p)/2 + p // multiply 2
+         2y = n + p        // div 2
+      -> y = (n + p)/2
+    ]}*)
+  let point =
+    Iter.product p_slope_consts n_slope_consts
+    |> Iter.fold_while
+         (fun _ (p, n) ->
+           let i = Vec2.of_tuple ((n - p) / 2, (n + p) / 2) in
+           if in_bounds i && could_be_beacon sensors true i
+           then Some i, `Stop
+           else None, `Continue)
+         None
+    |> Option.get_exn_or "no distress beacon found :("
+  in
+  (mult * point.x) + point.y
+;;
+
+let%expect_test "Day 15.2 example" =
+  Printf.printf "%i\n" @@ solve_part_2 example_lines 20 4000000;
+  [%expect {| 56000011 |}]
+;;
+
+let%expect_test "Day 15.2" =
+  Printf.printf "%i\n" @@ solve_part_2 (Utils.lines_of_input 15) 4000000 4000000;
+  [%expect {| 11756174628223 |}]
+;;

src/day16.ml

@@ -0,0 +1,141 @@
+open Containers
+
+let example_lines =
+  String.lines
+    {|Valve AA has flow rate=0; tunnels lead to valves DD, II, BB
+Valve BB has flow rate=13; tunnels lead to valves CC, AA
+Valve CC has flow rate=2; tunnels lead to valves DD, BB
+Valve DD has flow rate=20; tunnels lead to valves CC, AA, EE
+Valve EE has flow rate=3; tunnels lead to valves FF, DD
+Valve FF has flow rate=0; tunnels lead to valves EE, GG
+Valve GG has flow rate=0; tunnels lead to valves FF, HH
+Valve HH has flow rate=22; tunnel leads to valve GG
+Valve II has flow rate=0; tunnels lead to valves AA, JJ
+Valve JJ has flow rate=21; tunnel leads to valve II
+|}
+;;
+
+type valve =
+  { flow : int
+  ; mask : int
+  }
+
+let parse_valves lines =
+  let rooms = Hashtbl.create 100 in
+  lines
+  |> List.iter (fun line ->
+    let int_matches = List.map int_of_string Re.(matches (Pcre.regexp {|\d+|}) line) in
+    let valve_matches = Re.(matches (Pcre.regexp {|[A-Z]{2}|}) line) in
+    match int_matches, valve_matches with
+    | [ flow ], name :: tunnels -> Hashtbl.add rooms name (flow, tunnels)
+    | _ -> failwith "parse error");
+  let valves =
+    Hashtbl.to_list rooms
+    |> List.filter (fun (_, (flow, _)) -> flow > 0)
+    |> List.mapi (fun i (name, (flow, _)) ->
+      let mask = Int.(1 lsl i) in
+      name, { flow; mask })
+  in
+  let distances = Hashtbl.create 100 in
+  valves
+  |> List.map (fun (valve, _) -> valve)
+  |> List.cons "AA"
+  |> List.iter (fun from ->
+    let dist_of =
+      Fun.(
+        Utils.djikstra_hash
+          ~get_weight:(fun _ _ -> 1)
+          ~get_neighbors:(fun room ->
+            match Hashtbl.get rooms room with
+            | Some (_, tunnels) -> Iter.of_list tunnels
+            | None -> failwith "sad")
+          ~start_nodes:[ from ]
+          ()
+        %> Option.get_exn_or "big sad")
+    in
+    valves
+    |> List.remove_assoc ~eq:String.equal from
+    |> List.iter (fun (valve, _) ->
+      Hashtbl.replace distances (from, valve) (dist_of valve)));
+  let get_dist f t =
+    match Hashtbl.get distances (f, t) with
+    | Some dist -> dist
+    | None -> failwith @@ Printf.sprintf "cant find distance %s -> %s" f t
+  in
+  valves, get_dist
+;;
+
+let traverse
+  get_dist
+  (valves : (string * valve) list)
+  ?(current = "AA")
+  ?(released = 0)
+  ?(opened = 0)
+  time
+  =
+  let states = Hashtbl.create 1000 in
+  let rec traverse' current time released opened =
+    Hashtbl.update
+      states
+      ~f:(fun _ current ->
+        match current with
+        | Some r when r >= released -> Some r
+        | _ -> Some released)
+      ~k:opened;
+    valves
+    |> List.iter (fun (name, { flow; mask }) ->
+      if Int.(mask land opened) = 0
+      then (
+        let dist = get_dist current name in
+        let time' = time - (dist + 1) in
+        if time' > 0
+        then (
+          let released' = released + (flow * time') in
+          let opened' = Int.(mask lor opened) in
+          traverse' name time' released' opened')))
+  in
+  traverse' current time released opened;
+  states
+  |> Iter.of_hashtbl
+  |> Iter.sort ~cmp:(fun (_, a_score) (_, b_score) -> b_score - a_score)
+;;
+
+let solve_part_1 lines =
+  let valves, get_dist = parse_valves lines in
+  let states = traverse get_dist valves 30 in
+  match states |> Iter.take 1 |> Iter.to_list with
+  | [ (_, score) ] -> score
+  | _ -> failwith "no traversals ?"
+;;
+
+let%expect_test "Day 16.1 example" =
+  Printf.printf "%i\n" @@ solve_part_1 example_lines;
+  [%expect {| 1651 |}]
+;;
+
+let%expect_test "Day 16.1" =
+  Printf.printf "%i\n" @@ solve_part_1 @@ Utils.lines_of_input 16;
+  [%expect {| 2265 |}]
+;;
+
+let solve_part_2 lines =
+  let valves, get_dist = parse_valves @@ lines in
+  let states = traverse get_dist valves 26 in
+  states
+  |> Iter.filter_map (fun (a_set, a_score) ->
+    match Iter.find_pred (fun (b_set, _) -> Int.(a_set land b_set) = 0) states with
+    | Some (_, b_score) -> Some (a_score + b_score)
+    | None -> None)
+  |> Iter.fold Int.max 0
+;;
+
+let%expect_test "Day 16.2 example" =
+  Printf.printf "%i\n" @@ solve_part_2 example_lines;
+  [%expect {| 1707 |}]
+;;
+
+(* god damn bitmasks are fast, 30x speedup from StrSet! down to 50ms now *)
+let%expect_test "Day 16.2" =
+  Printf.printf "%i\n" @@ solve_part_2 @@ Utils.lines_of_input 16;
+  [%expect {| 2811 |}]
+;;

src/day17.ml

@@ -0,0 +1,201 @@
+open Containers
+
+let cave_width = 7
+let example_lines = [ ">>><<><>><<<>><>>><<<>>><<<><<<>><>><<>>" ]
+
+let dir_of_char = function
+  | '<' -> Vec2.left
+  | '>' -> Vec2.right
+  | _ -> failwith "oof"
+;;
+
+let next_stream_idx stream idx = (idx + 1) mod Array.length stream
+
+(*[{
+                       #
+         #       #     #
+        ###      #     #     ##
+ ####    #     ###     #     ##
+
+ row    plus   angle   col   square
+
+}]*)
+type shape =
+  | Row
+  | Plus
+  | Angle
+  | Col
+  | Square
+
+let get_shape idx = [| Row; Plus; Angle; Col; Square |].(idx mod 5)
+
+let shape_points shape pos =
+  let points =
+    match shape with
+    | Row -> [ 0, 0; 1, 0; 2, 0; 3, 0 ]
+    | Plus -> [ 0, 1; 1, 0; 1, 1; 1, 2; 2, 1 ]
+    | Angle -> [ 0, 0; 1, 0; 2, 0; 2, 1; 2, 2 ]
+    | Col -> [ 0, 0; 0, 1; 0, 2; 0, 3 ]
+    | Square -> [ 0, 0; 1, 0; 0, 1; 1, 1 ]
+  in
+  points |> List.map (fun point -> Vec2.(pos + of_tuple point))
+;;
+
+type loop_key =
+  { rock : shape
+  ; stream_idx : int
+  ; normalized_topo : int array
+  }
+
+type loop =
+  { rock_idx : int
+  ; height : int
+  }
+
+type cave =
+  { grid : char Grid.t
+  ; mutable grid_topo : int array
+  ; mutable grid_height : int
+  ; total_rocks : int
+  ; mutable rocks : int
+  ; mutable stream_idx : int
+  ; loop_cache : (loop_key, loop) Hashtbl.t
+  ; mutable height : int
+  }
+
+let init_cave max_height total_rocks =
+  let grid = Grid.init ~width:7 ~height:max_height (Fun.const '.') in
+  { grid
+  ; height = -1
+  ; grid_height = -1
+  ; rocks = 0
+  ; stream_idx = 0
+  ; grid_topo = Array.init cave_width (Fun.const 0)
+  ; loop_cache = Hashtbl.create max_height
+  ; total_rocks
+  }
+;;
+
+let draw_cave cave = Grid.draw cave.grid ~rev_y:true (fun _ contents -> contents)
+
+let place_shape cave shape pos =
+  shape_points shape pos
+  |> List.iter (fun point ->
+    let delta = point.Vec2.y - cave.grid_height in
+    if delta > 0
+    then (
+      cave.height <- cave.height + delta;
+      cave.grid_height <- cave.grid_height + delta);
+    cave.grid_topo.(point.x) <- max point.y cave.grid_topo.(point.x);
+    Grid.set_e cave.grid point '#')
+;;
+
+let can_place_shape cave shape pos =
+  shape_points shape pos
+  |> List.fold_while
+       (fun _ point ->
+         match cave.grid.Grid.%(point) with
+         | Some '.' -> true, `Continue
+         | _ -> false, `Stop)
+       false
+;;
+
+let drop_shape cave stream =
+  let shape = get_shape cave.rocks in
+  let rec drop pos =
+    let stream_pos = Vec2.(pos + stream.(cave.stream_idx)) in
+    cave.stream_idx <- next_stream_idx stream cave.stream_idx;
+    let pos = if can_place_shape cave shape stream_pos then stream_pos else pos in
+    let drop_pos = Vec2.(pos + Vec2.up) in
+    if can_place_shape cave shape drop_pos
+    then drop drop_pos
+    else place_shape cave shape pos
+  in
+  cave.rocks <- cave.rocks + 1;
+  drop Vec2.{ x = 2; y = Int.(cave.grid_height + 4) }
+;;
+
+let normalize_topo topo =
+  let min = Array.min_exn Int.compare topo in
+  Array.map (fun x -> x - min) topo
+;;
+
+let rec drop_shapes cave stream =
+  let loop_key =
+    { rock = get_shape cave.rocks
+    ; stream_idx = cave.stream_idx
+    ; normalized_topo = normalize_topo cave.grid_topo
+    }
+  in
+  let remaining_rocks cave = cave.total_rocks - cave.rocks in
+  let loop_rocks loop = cave.rocks - loop.rock_idx in
+  let loop_fits loop = loop_rocks loop < remaining_rocks cave in
+  match Hashtbl.get cave.loop_cache loop_key with
+  | Some loop when loop_fits loop ->
+    let loop_height = cave.height - loop.height in
+    cave.height <- cave.height + loop_height;
+    cave.rocks <- cave.rocks + loop_rocks loop;
+    drop_shapes cave stream
+  | _ when remaining_rocks cave > 0 ->
+    let loop = { height = cave.height; rock_idx = cave.rocks } in
+    Hashtbl.add cave.loop_cache loop_key loop;
+    drop_shape cave stream;
+    drop_shapes cave stream
+  | _ -> ()
+;;
+
+let solve remaining_rocks lines =
+  let stream = lines |> List.hd |> Iter.of_str |> Iter.map dir_of_char |> Iter.to_array in
+  let cave = init_cave 100_000 remaining_rocks in
+  drop_shapes cave stream;
+  cave.height + 1
+;;
+
+let%expect_test "Day 17.1 Example" =
+  Printf.printf "height: %i\n" @@ solve 2022 example_lines;
+  [%expect {| height: 3068 |}]
+;;
+
+let%expect_test "Day 17.1" =
+  Printf.printf "height: %i\n" @@ solve 2022 (Utils.lines_of_input 17);
+  [%expect {| height: 3227 |}]
+;;
+
+let%expect_test "Day 17.2 Example" =
+  Printf.printf "height: %i\n" @@ solve 1_000_000_000_000 example_lines;
+  [%expect {| height: 1514285714288 |}]
+;;
+
+let%expect_test "Day 17.2" =
+  Printf.printf "height: %i\n" @@ solve 1_000_000_000_000 (Utils.lines_of_input 17);
+  [%expect {| height: 1597714285698 |}]
+;;
+
+let%expect_test "Smol tower" =
+  let stream =
+    example_lines |> List.hd |> Iter.of_str |> Iter.map dir_of_char |> Iter.to_array
+  in
+  let cave = init_cave 18 8 in
+  drop_shapes cave stream;
+  Printf.printf "%s" @@ draw_cave cave;
+  [%expect
+    {|
+    .......
+    .......
+    .......
+    .....#.
+    .....#.
+    ..####.
+    .###...
+    ..#....
+    .####..
+    ....##.
+    ....##.
+    ....#..
+    ..#.#..
+    ..#.#..
+    #####..
+    ..###..
+    ...#...
+    ..####. |}]
+;;

src/day18.ml

@@ -0,0 +1,121 @@
+open Containers
+
+let example_lines =
+  String.lines
+    {|2,2,2
+1,2,2
+3,2,2
+2,1,2
+2,3,2
+2,2,1
+2,2,3
+2,2,4
+2,2,6
+1,2,5
+3,2,5
+2,1,5
+2,3,5|}
+;;
+
+module Vec3 = struct
+  type t = int * int * int [@@deriving show, eq, ord, hash]
+
+  let directions = [ 1, 0, 0; -1, 0, 0; 0, 1, 0; 0, -1, 0; 0, 0, 1; 0, 0, -1 ]
+  let ( + ) (x1, y1, z1) (x2, y2, z2) = x1 + x2, y1 + y2, z1 + z2
+  let ( - ) (x1, y1, z1) (x2, y2, z2) = x1 - x2, y1 - y2, z1 - z2
+  let ( = ) = equal
+
+  let iter_region (ax, ay, az) (bx, by, bz) callback =
+    for z = az to bz do
+      for y = ay to by do
+        for x = ax to bx do
+          let p = x, y, z in
+          callback p
+        done
+      done
+    done
+  ;;
+
+  let in_bounds (lx, ly, lz) (hx, hy, hz) (x, y, z) =
+    not (x < lx || x > hx || y < ly || y > hy || z < lz || z > hz)
+  ;;
+
+  let find_bounds points =
+    let first = Iter.head_exn points in
+    let padding = 1, 1, 1 in
+    let min, max =
+      points
+      |> Iter.drop 1
+      |> Iter.fold
+           (fun ((lx, ly, lz), (hx, hy, hz)) (x, y, z) ->
+             (min lx x, min ly y, min lz z), (max hx x, max hy y, max hz z))
+           (first, first)
+    in
+    min - padding, max + padding
+  ;;
+end
+
+module Vec3Set = Set.Make (Vec3)
+
+let parse_points lines =
+  lines
+  |> List.map (fun line ->
+    match List.map Int.of_string_exn Re.(matches (Pcre.regexp {|\d+|}) line) with
+    | [ x; y; z ] -> x, y, z
+    | _ -> failwith "oopzi doopers")
+  |> Vec3Set.of_list
+;;
+
+let solve_part_1 lines =
+  let points = parse_points lines in
+  let min, max = Vec3.find_bounds @@ Vec3Set.to_iter points in
+  let surface_area = ref 0 in
+  Vec3.iter_region min max (fun point ->
+    if not @@ Vec3Set.mem point points
+    then
+      Vec3.directions
+      |> List.iter (fun dir ->
+        let n = Vec3.(point + dir) in
+        if Vec3Set.mem n points then incr surface_area));
+  !surface_area
+;;
+
+let%expect_test "Day 18.1 example" =
+  Format.printf "%i" @@ solve_part_1 example_lines;
+  [%expect {| 64 |}]
+;;
+
+let%expect_test "Day 18.1" =
+  Format.printf "%i" @@ solve_part_1 @@ Utils.lines_of_input 18;
+  [%expect {| 3662 |}]
+;;
+
+let solve_part_2 lines =
+  let points = parse_points lines in
+  let min, max = Vec3.find_bounds @@ Vec3Set.to_iter points in
+  let in_bounds = Vec3.in_bounds min max in
+  let surface_area = ref 0 in
+  let directions_iter = Iter.of_list Vec3.directions in
+  let get_neighbors point =
+    directions_iter
+    |> Iter.map Vec3.(fun dir -> point + dir)
+    |> Iter.filter (fun neighbor ->
+      let in_droplet = Vec3Set.mem neighbor points in
+      if in_droplet then incr surface_area;
+      (not in_droplet) && in_bounds neighbor)
+  in
+  let _ignore =
+    Utils.djikstra_hash ~get_weight:(fun _ _ -> 1) ~get_neighbors ~start_nodes:[ min ] ()
+  in
+  !surface_area
+;;
+
+let%expect_test "Day 18.2 example" =
+  Format.printf "%i" @@ solve_part_2 example_lines;
+  [%expect {| 58 |}]
+;;
+
+let%expect_test "Day 18.2" =
+  Format.printf "%i" @@ solve_part_2 @@ Utils.lines_of_input 18;
+  [%expect {| 2060 |}]
+;;

src/day2.ml

@@ -52,7 +52,8 @@ let match_outcome = function
   | _, _ -> Lose
 ;;
 
-let part1 lines =
+let part1 () =
+  let lines = Utils.lines_of_input 2 in
   let parse_line line =
     match Re.Pcre.(split ~rex:(regexp {|\s+|}) line) with
     | them :: me :: _ -> parse_move them, parse_move me
@@ -66,7 +67,8 @@ let part1 lines =
     lines
 ;;
 
-let part2 lines =
+let part2 () =
+  let lines = Utils.lines_of_input 2 in
   let parse_line =
     function%pcre
     | {|(?<them>\w)\s*(?<outcome>\w)|} -> parse_move them, parse_outcome outcome
@@ -86,9 +88,12 @@ let part2 lines =
     lines
 ;;
 
-let print () =
-  let lines = Utils.lines_of_input 2 in
-  Printf.(
-    printf "Day 2.1: %d\n" @@ part1 lines;
-    printf "Day 2.2: %d\n" @@ part2 lines)
+let%expect_test "Day 2.1" =
+  Printf.printf "%d" @@ part1 ();
+  [%expect {| 11841 |}]
+;;
+
+let%expect_test "Day 2.2" =
+  Printf.printf "%d" @@ part2 ();
+  [%expect {| 13022 |}]
 ;;

src/day3.ml

@@ -0,0 +1,57 @@
+open Containers
+module CharSet = Set.Make (Char)
+
+let set_of_string string = CharSet.of_list (String.to_list string)
+
+let priority char =
+  match char with
+  | 'a' .. 'z' -> 1 + Char.compare char 'a'
+  | 'A' .. 'Z' -> 27 + Char.compare char 'A'
+  | _ -> failwith @@ Printf.sprintf "'%c' is not a valid item" char
+;;
+
+let part1 () =
+  let lines = Utils.lines_of_input 3 in
+  List.fold_left
+    (fun acc line ->
+      let half_len = String.length line / 2 in
+      let first, second = Pair.map_same set_of_string (String.take_drop half_len line) in
+      let item =
+        match CharSet.elements @@ CharSet.inter first second with
+        | [ item ] -> item
+        | _ ->
+          failwith "first and second half of each line should only have 1 intersection"
+      in
+      acc + priority item)
+    0
+    lines
+;;
+
+(*
+   shout out https://doc.sherlocode.com/ for helping me find Containers and its
+   List.chunks and List.reduce functions
+*)
+let part2 () =
+  let lines = Utils.lines_of_input 3 in
+  let groups = List.chunks 3 (List.map set_of_string lines) in
+  List.fold_left
+    (fun acc group ->
+      let item =
+        match CharSet.elements @@ List.reduce_exn CharSet.inter group with
+        | [ item ] -> item
+        | _ -> failwith "each group of 3 lines should only have 1 intersection"
+      in
+      acc + priority item)
+    0
+    groups
+;;
+
+let%expect_test "Day 3.1" =
+  Printf.printf "%d" @@ part1 ();
+  [%expect {| 7446 |}]
+;;
+
+let%expect_test "Day 3.2" =
+  Printf.printf "%d" @@ part2 ();
+  [%expect {| 2646 |}]
+;;

src/day4.ml

@@ -0,0 +1,44 @@
+open Containers
+
+let lines = Utils.lines_of_input 4
+
+let parse_line =
+  function%pcre
+  | {|(?<a>\d+)-(?<b>\d+),(?<c>\d+)-(?<d>\d+)|} ->
+    (int_of_string a, int_of_string b), (int_of_string c, int_of_string d)
+  | line -> failwith @@ Printf.sprintf "cannot parse line '%s'" line
+;;
+
+let count_overlaps is_overlapping =
+  lines
+  |> List.fold_left
+       (fun acc line ->
+         match is_overlapping @@ parse_line line with
+         | true -> acc + 1
+         | false -> acc)
+       0
+;;
+
+let part1 () =
+  count_overlaps (fun pairs ->
+    match pairs with
+    | (l1, r1), (l2, r2) when (l1 <= l2 && r1 >= r2) || (l2 <= l1 && r2 >= r1) -> true
+    | _ -> false)
+;;
+
+let part2 () =
+  count_overlaps (fun pairs ->
+    match pairs with
+    | (l1, r1), (l2, r2) when r1 < l2 || r2 < l1 -> false
+    | _ -> true)
+;;
+
+let%expect_test "Day 4.1" =
+  Printf.printf "%d" @@ part1 ();
+  [%expect {| 547 |}]
+;;
+
+let%expect_test "Day 4.2" =
+  Printf.printf "%d" @@ part2 ();
+  [%expect {| 843 |}]
+;;

src/day5.ml

@@ -0,0 +1,84 @@
+open Containers
+
+let crane_drop stacks index boxes = stacks.(index) <- boxes @ stacks.(index)
+
+let crane_lift stacks index count =
+  let stack = stacks.(index) in
+  let boxes, rest = List.take_drop count stack in
+  stacks.(index) <- rest;
+  boxes
+;;
+
+let crane_move1 stacks (count, lift, drop) =
+  List.iter
+    (fun _ ->
+      let box = crane_lift stacks lift 1 in
+      crane_drop stacks drop box)
+    List.Infix.(0 --^ count)
+;;
+
+let crane_move stacks (count, lift, drop) =
+  let boxes = crane_lift stacks lift count in
+  crane_drop stacks drop boxes
+;;
+
+let init_stacks lines =
+  let stacks = Array.init 10 (fun _ -> []) in
+  let rec parse_line index line =
+    let chunk, rest = String.take_drop 4 line in
+    match%pcre chunk with
+    | {|(?<letter>\w)|} ->
+      crane_drop stacks index [ letter ];
+      parse_line (index + 1) rest
+    | {| |} -> parse_line (index + 1) rest
+    | _ -> ()
+  in
+  List.iter (parse_line 1) (List.rev lines);
+  stacks
+;;
+
+let move_stacks stacks lines crane_move =
+  let parse_line =
+    function%pcre
+    | {|move (?<count>\d+) from (?<lift>\d+) to (?<drop>\d+)|} ->
+      int_of_string count, int_of_string lift, int_of_string drop
+    | line -> failwith @@ Printf.sprintf "could not parse line '%s'" line
+  in
+  List.iter
+    (fun line ->
+      let instructions = parse_line line in
+      crane_move stacks instructions)
+    lines
+;;
+
+let parse_input lines =
+  let init_lines, lines = List.take_drop_while (String.starts_with ~prefix:"[") lines in
+  let move_lines = List.drop_while Fun.(not % String.starts_with ~prefix:"move") lines in
+  init_lines, move_lines
+;;
+
+let solve crane_move =
+  let init_lines, move_lines = parse_input @@ Utils.lines_of_input 5 in
+  let stacks = init_stacks init_lines in
+  let () = move_stacks stacks move_lines crane_move in
+  Array.fold_left
+    (fun acc stack ->
+      match stack with
+      | top :: _ -> acc ^ top
+      | [] -> acc)
+    ""
+    stacks
+;;
+
+let part1 () = solve crane_move1
+let part2 () = solve crane_move
+
+let%expect_test "Day 5.1" =
+  Printf.printf "%s" @@ part1 ();
+  [%expect {| PSNRGBTFT |}]
+;;
+
+let%expect_test "Day 5.2" =
+  Printf.printf "%s" @@ part2 ();
+  [%expect {| BNTZFPMMW |}]
+;;

src/day6.ml

@@ -0,0 +1,35 @@
+open Containers
+module CharSet = Set.Make (Char)
+
+let window = 4
+
+let stream =
+  match Utils.lines_of_input 6 with
+  | [ line ] -> line
+  | _ -> failwith "more than one line in input"
+;;
+
+let find_start window =
+  let length = String.length stream in
+  let start_index =
+    List.Infix.(0 --^ (length - window))
+    |> List.drop_while (fun index ->
+      let chunk = String.take window (String.drop index stream) in
+      window <> (chunk |> String.to_list |> CharSet.of_list |> CharSet.cardinal))
+    |> List.hd
+  in
+  start_index + window
+;;
+
+let part1 () = find_start 4
+let part2 () = find_start 14
+
+let%expect_test "Day 6.1" =
+  Printf.printf "%d" @@ part1 ();
+  [%expect {| 1833 |}]
+;;
+
+let%expect_test "Day 6.2" =
+  Printf.printf "%d" @@ part2 ();
+  [%expect {| 3425 |}]
+;;

src/day7.ml

@@ -0,0 +1,112 @@
+open Containers
+
+(* could have simplified this a lot by getting rid of File *)
+type node =
+  | File of
+      { name : string
+      ; size : int
+      }
+  | Dir of
+      { name : string
+      ; parent : node option
+      ; mutable children : node list
+      }
+
+let get_dir_tree () =
+  let lines = List.drop 1 @@ Utils.lines_of_input 7 in
+  let line_num = ref 0 in
+  let tree = Dir { name = "/"; children = []; parent = None } in
+  let _ =
+    lines
+    |> List.fold_left
+         (fun node line ->
+           incr line_num;
+           match node with
+           | File _ -> failwith "current directory cannot be a file"
+           | Dir dir ->
+             (match String.split ~by:" " line with
+              | [ "$"; "ls" ] -> node
+              | [ "dir"; name ] ->
+                let new_dir = Dir { name; parent = Some (Dir dir); children = [] } in
+                dir.children <- new_dir :: dir.children;
+                node
+              | [ "$"; "cd"; ".." ] ->
+                (match dir.parent with
+                 | Some parent -> parent
+                 | _ ->
+                   failwith
+                   @@ Printf.sprintf
+                        "ERROR:%d: cant cd .. because node '%s' has no parent"
+                        !line_num
+                        dir.name)
+              | [ "$"; "cd"; name ] ->
+                dir.children
+                |> List.find (fun child ->
+                  match child with
+                  | Dir child_dir -> String.Infix.(name = child_dir.name)
+                  | _ -> false)
+              | [ size; name ] ->
+                let new_file = File { name; size = int_of_string size } in
+                dir.children <- new_file :: dir.children;
+                node
+              | _ -> failwith @@ Printf.sprintf "failed to parse line '%s'" line))
+         tree
+  in
+  tree
+;;
+
+let rec get_node_size fn node =
+  let get_node_size' = get_node_size fn in
+  match node with
+  | File file -> file.size
+  | Dir dir ->
+    let size =
+      match List.reduce ( + ) @@ List.map get_node_size' dir.children with
+      | Some size -> size
+      | None -> 0
+    in
+    fn size;
+    size
+;;
+
+let part1 () =
+  let tree = get_dir_tree () in
+  let answer = ref 0 in
+  let build_answer dir_size =
+    if dir_size <= 100000 then answer := !answer + dir_size;
+    ()
+  in
+  let _ = get_node_size build_answer tree in
+  !answer
+;;
+
+let part2 () =
+  let tree = get_dir_tree () in
+  let dir_sizes = ref [] in
+  let collect_dir_sizes dir_size =
+    dir_sizes := dir_size :: !dir_sizes;
+    ()
+  in
+  let used_space = get_node_size collect_dir_sizes tree in
+  let total_space = 70_000_000 in
+  let required_space = 30_000_000 in
+  let free_space = total_space - used_space in
+  match
+    !dir_sizes
+    |> List.sort ( - )
+    |> List.drop_while (fun size -> size < required_space - free_space)
+    |> List.head_opt
+  with
+  | Some size -> size
+  | None -> failwith "not possible!!"
+;;
+
+let%expect_test "Day 7.1" =
+  Printf.printf "%d" @@ part1 ();
+  [%expect {| 1453349 |}]
+;;
+
+let%expect_test "Day 7.2" =
+  Printf.printf "%d" @@ part2 ();
+  [%expect {| 2948823 |}]
+;;

src/day8.ml

@@ -0,0 +1,55 @@
+open Containers
+
+let parse_grid () =
+  Grid.of_lines Fun.(Char.to_string %> int_of_string) @@ Utils.lines_of_input 8
+;;
+
+let part1 () =
+  let grid = parse_grid () in
+  let num_visible = ref 0 in
+  Grid.iter grid (fun start ->
+    let start_height = Option.get_exn_or "unreachable" @@ Grid.at grid start in
+    let rec walk_shorter_trees start step =
+      let next = Vec2.(start + step) in
+      match Grid.at grid next with
+      | Some height when height < start_height -> walk_shorter_trees next step
+      | opt -> opt
+    in
+    let visible =
+      Vec2.directions
+      |> List.map @@ walk_shorter_trees start
+      |> List.map Option.is_none
+      |> List.reduce_exn ( || )
+    in
+    if visible then incr num_visible);
+  !num_visible
+;;
+
+let part2 () =
+  let grid = parse_grid () in
+  let best_score = ref 0 in
+  Grid.iter grid (fun start ->
+    let start_height = Option.get_exn_or "unreachable" @@ Grid.at grid start in
+    let rec trees_in_view start in_view step =
+      let next = Vec2.(start + step) in
+      match Grid.at grid next with
+      | Some height when height < start_height -> trees_in_view next (in_view + 1) step
+      | Some _ -> in_view + 1
+      | None -> in_view
+    in
+    let score =
+      Vec2.directions |> List.map @@ trees_in_view start 0 |> List.reduce_exn ( * )
+    in
+    if score > !best_score then best_score := score);
+  !best_score
+;;
+
+let%expect_test "Day 8.1" =
+  Printf.printf "%d" @@ part1 ();
+  [%expect {| 1803 |}]
+;;
+
+let%expect_test "Day 8.2" =
+  Printf.printf "%d" @@ part2 ();
+  [%expect {| 268912 |}]
+;;

src/day9.ml

@@ -0,0 +1,72 @@
+open Containers
+
+let parse_input () =
+  Utils.lines_of_input 9
+  |> List.concat_map (fun line ->
+    match String.split ~by:" " line with
+    | [ dir; count ] ->
+      let count = int_of_string count in
+      let dir =
+        match dir with
+        | "U" -> Vec2.up
+        | "D" -> Vec2.down
+        | "L" -> Vec2.left
+        | "R" -> Vec2.right
+        | _ -> failwith "failed to parse instructions"
+      in
+      List.init count (fun _ -> dir)
+    | _ -> failwith "failed to parse instructions")
+;;
+
+let next_pos head tail =
+  let dx, dy = Vec2.(to_tuple @@ (tail - head)) in
+  if abs dx <= 1 && abs dy <= 1
+  then tail
+  else (
+    let x_dir = if dx > 0 then Vec2.right else Vec2.left in
+    let y_dir = if dy > 0 then Vec2.down else Vec2.up in
+    let dir =
+      if abs dx = abs dy
+      then Vec2.(x_dir + y_dir)
+      else if abs dx > abs dy
+      then x_dir
+      else y_dir
+    in
+    Vec2.(head + dir))
+;;
+
+let solve length =
+  let moves = parse_input () in
+  let start = Vec2.origin in
+  let tail = List.init (length - 1) (fun _ -> start) in
+  let _, _, last_knot_hist =
+    List.fold_left
+      (fun (head, tail, last_knot_hist) dir ->
+        let new_head = Vec2.(head + dir) in
+        let last_knot, new_tail =
+          List.fold_map
+            (fun head knot ->
+              let new_knot = next_pos head knot in
+              new_knot, new_knot)
+            new_head
+            tail
+        in
+        new_head, new_tail, last_knot :: last_knot_hist)
+      (start, tail, [ start ])
+      moves
+  in
+  last_knot_hist |> List.uniq ~eq:Vec2.( = ) |> List.length
+;;
+
+let part1 () = solve 2
+let part2 () = solve 10
+
+let%expect_test "Day 9.1" =
+  Printf.printf "%d" @@ part1 ();
+  [%expect {| 6030 |}]
+;;
+
+let%expect_test "Day 9.2" =
+  Printf.printf "%d" @@ part2 ();
+  [%expect {| 2545 |}]
+;;

src/dune

@@ -1,7 +1,19 @@
 (library
  (name aoc)
- (libraries stdio re dune-site)
- (preprocess (pps ppx_regexp)))
+ (libraries re containers iter dune-site angstrom)
+ (inline_tests)
+ (preprocess (pps
+               ppx_regexp
+               ppx_deriving.show
+               ppx_deriving.eq
+               ppx_deriving.ord
+               ppx_deriving_hash
+               ppx_expect
+               ppx_inline_test)))
+
+(env
+ (dev
+  (flags (:standard -warn-error -A))))
 
 (install
  (section (site (aoc inputs)))

src/grid.ml

@@ -0,0 +1,99 @@
+open Containers
+
+type 'a t =
+  { width : int
+  ; height : int
+  ; items : 'a array
+  }
+[@@deriving show]
+
+let vec2_of_idx ~width ~idx =
+  let y = idx / width in
+  let x = idx mod width in
+  Vec2.of_tuple (x, y)
+;;
+
+let idx_of_vec2 width vec = Vec2.(Int.((width * vec.y) + vec.x))
+
+let in_bounds grid point =
+  let x, y = Vec2.to_tuple point in
+  x >= 0 && x < grid.width && y >= 0 && y < grid.height
+;;
+
+let at grid point =
+  if in_bounds grid point
+  then Array.get_safe grid.items @@ idx_of_vec2 grid.width point
+  else None
+;;
+
+let at_e (grid : 'a t) (point : Vec2.t) =
+  match at grid point with
+  | Some point -> point
+  | None -> failwith @@ Format.sprintf "point %a out of bounds!" Vec2.pp point
+;;
+
+let set_e grid point item =
+  if in_bounds grid point
+  then Array.set grid.items (idx_of_vec2 grid.width point) item
+  else failwith (Format.sprintf "point %a out of bounds!" Vec2.pp point)
+;;
+
+let ( .%() ) = at
+let ( .%()<- ) = set_e
+
+let find (grid : 'a t) pred =
+  let open Option.Infix in
+  let* idx, item = Array.find_idx pred grid.items in
+  Some (vec2_of_idx ~width:grid.width ~idx, item)
+;;
+
+let count grid pred =
+  Array.fold (fun count item -> if pred item then count + 1 else count) 0 grid.items
+;;
+
+let init ~width ~height init =
+  { width
+  ; height
+  ; items = Array.init (width * height) (fun idx -> init @@ vec2_of_idx ~width ~idx)
+  }
+;;
+
+let of_lines parse_char lines : 'a t =
+  match lines with
+  | first_line :: _ ->
+    let width = String.length first_line in
+    let height = List.length lines in
+    let yeet =
+      lines
+      |> List.map String.to_list
+      |> List.flatten
+      |> List.map parse_char
+      |> Array.of_list
+    in
+    { width; height; items = yeet }
+  | _ -> failwith "somethin fucd up"
+;;
+
+let iter_region grid a b callback =
+  Vec2.iter_region a b (fun pos -> if in_bounds grid pos then callback pos)
+;;
+
+let iter grid callback =
+  let a = Vec2.of_tuple (0, 0) in
+  let b = Vec2.of_tuple (grid.width - 1, grid.height - 1) in
+  iter_region grid a b callback
+;;
+
+let draw grid ?(rev_y = false) ?(rev_x = false) printer =
+  let line = ref [] in
+  let lines = ref [] in
+  iter grid (fun point ->
+    let item = grid.%(point) in
+    let char = printer point (Option.get_exn_or "iter is broken" item) in
+    line := if rev_x then char :: !line else !line @ [ char ];
+    if List.length !line = grid.width
+    then (
+      lines := !lines @ [ String.of_list !line ];
+      line := []));
+  String.concat "\n" (if rev_y then List.rev !lines else !lines)
+;;

src/grid.mli

@@ -0,0 +1,14 @@
+type 'a t [@@deriving show]
+
+val at : 'a t -> Vec2.t -> 'a option
+val at_e : 'a t -> Vec2.t -> 'a
+val set_e : 'a t -> Vec2.t -> 'a -> unit
+val ( .%() ) : 'a t -> Vec2.t -> 'a option
+val ( .%()<- ) : 'a t -> Vec2.t -> 'a -> unit
+val init : width:int -> height:int -> (Vec2.t -> 'a) -> 'a t
+val of_lines : (char -> 'a) -> string list -> 'a t
+val find : 'a t -> ('a -> bool) -> (Vec2.t * 'a) option
+val count : 'a t -> ('a -> bool) -> int
+val iter_region : 'a t -> Vec2.t -> Vec2.t -> (Vec2.t -> unit) -> unit
+val iter : 'a t -> (Vec2.t -> unit) -> unit
+val draw : 'a t -> ?rev_y:bool -> ?rev_x:bool -> (Vec2.t -> 'a -> char) -> string

src/utils.ml

@@ -1,3 +1,5 @@
+open Containers
+
 let lines_of_input day =
   let base_path =
     match Inputs.Sites.inputs with
@@ -5,5 +7,126 @@ let lines_of_input day =
     | _ -> failwith "cant find path containing inputs"
   in
   let path = Printf.sprintf "%s/day%d.tt" base_path day in
-  Stdio.In_channel.(with_file path ~f:input_lines)
+  IO.(with_in path read_lines_l)
 ;;
+
+(** [f] in [memo f] should be a function that makes recursive calls
+    via the memoized function passed as its first argument. ie:
+    {[
+      let fib_m =
+        memo (fun self x ->
+          match x with
+          | 0 | 1 -> 1
+          | x -> self (x - 1) + self (x - 2))
+      ;;
+    ]} *)
+let memo f =
+  let open Hashtbl in
+  let cache = create 100000 in
+  let rec f_mem k =
+    try find cache k with
+    | Not_found ->
+      let v = f f_mem k in
+      add cache k v;
+      v
+  in
+  f_mem
+;;
+
+let%expect_test "fib memoized" =
+  let fib_m =
+    memo (fun fib_m x ->
+      match x with
+      | 0 | 1 -> 1
+      | x -> fib_m (x - 1) + fib_m (x - 2))
+  in
+  Printf.printf "%i\n" @@ fib_m 100;
+  [%expect {| 1298777728820984005 |}]
+;;
+
+let djikstra ~eq ~get_info ~set_info ~get_weight ~get_neighbors ~goal ~start_nodes =
+  let seen = ref [] in
+  let rec djikstra' c_node =
+    let c_dist, _ = get_info c_node in
+    set_info c_node (c_dist, true);
+    get_neighbors c_node
+    |> Iter.iter (fun neighbor ->
+      let n_dist, n_visited = get_info neighbor in
+      if not n_visited
+      then (
+        let new_dist = c_dist + get_weight c_node neighbor in
+        if new_dist < n_dist then set_info neighbor (new_dist, n_visited);
+        seen := List.add_nodup ~eq neighbor !seen));
+    seen
+    := List.fast_sort
+         (fun a b ->
+           let a_dist, _ = get_info a in
+           let b_dist, _ = get_info b in
+           Int.compare a_dist b_dist)
+         !seen;
+    match goal, !seen with
+    | Some goal_node, next :: _ when eq goal_node next ->
+      let dist, _ = get_info next in
+      Some dist
+    | None, [] -> Some 0
+    | _, next :: rest ->
+      seen := rest;
+      djikstra' next
+    | Some _, [] -> None
+  in
+  List.iter (fun node -> set_info node (0, false)) start_nodes;
+  match start_nodes with
+  | first :: rest ->
+    seen := rest;
+    djikstra' first
+  | _ -> failwith "start_nodes cannot be empty"
+;;
+
+let djikstra_hash
+  (type k)
+  ?(hash = Hashtbl.hash)
+  ?(eq = Stdlib.( = ))
+  ?(slots = 100)
+  ~get_weight
+  ~get_neighbors
+  ~start_nodes
+  ()
+  =
+  let module Tbl =
+    CCHashtbl.Make (struct
+      type t = k
+
+      let equal = eq
+      let hash = hash
+    end)
+  in
+  let table = Tbl.create slots in
+  let get_info node = Tbl.get_or ~default:(Int.max_int, false) table node in
+  let set_info node info = Tbl.replace table node info in
+  let dist_of node = Option.(Tbl.get table node >|= fun (dist, _) -> dist) in
+  let _ =
+    djikstra ~eq ~get_info ~set_info ~get_weight ~get_neighbors ~goal:None ~start_nodes
+  in
+  dist_of
+;;
+
+module Parse = struct
+  include Angstrom
+
+  let sign = option 1 (char '-' >>= fun _ -> return (-1))
+
+  let digits =
+    take_while1 (function
+      | '0' .. '9' -> true
+      | _ -> false)
+    >>| int_of_string
+  ;;
+
+  let int = map2 sign digits ~f:( * )
+
+  let not_int =
+    skip_while (function
+      | '0' .. '9' | '-' -> false
+      | _ -> true)
+  ;;
+end

src/vec2.ml

@@ -0,0 +1,57 @@
+open Containers
+
+type t =
+  { x : int
+  ; y : int
+  }
+[@@deriving eq, ord, hash]
+
+let pp (fmt : Format.formatter) v = Format.fprintf fmt "(%i, %i)" v.x v.y
+let show v = Format.asprintf "%a" pp v
+let origin = { x = 0; y = 0 }
+let up = { x = 0; y = -1 }
+let down = { x = 0; y = 1 }
+let right = { x = 1; y = 0 }
+let left = { x = -1; y = 0 }
+let directions = [ up; down; left; right ]
+let of_tuple (x, y) = { x; y }
+let to_tuple { x; y } = x, y
+let ( + ) a b = { x = a.x + b.x; y = a.y + b.y }
+let ( - ) a b = { x = a.x - b.x; y = a.y - b.y }
+let ( = ) = equal
+let abs a = Int.{ x = abs a.x; y = abs a.y }
+
+let iter_region a b callback =
+  for y = min a.y b.y to max a.y b.y do
+    for x = min a.x b.x to max a.x b.x do
+      callback { x; y }
+    done
+  done
+;;
+
+let fold_region a b callback init =
+  let acc = ref init in
+  iter_region a b (fun pos -> acc := callback !acc pos);
+  !acc
+;;
+
+let find_bounds padding points =
+  let lx, hx, ly, hy =
+    points
+    |> Iter.fold
+         (fun (lx, hx, ly, hy) { x; y } ->
+           let lx = min lx x in
+           let hx = max hx x in
+           let ly = min ly y in
+           let hy = max hy y in
+           lx, hx, ly, hy)
+         (Int.max_int, 0, Int.max_int, 0)
+  in
+  let lx = Int.(lx - padding) in
+  let hx = Int.(hx + padding) in
+  let ly = Int.(ly - padding) in
+  let hy = Int.(hy + padding) in
+  of_tuple (lx, ly), of_tuple (hx, hy)
+;;
+
+let in_bounds l h p = p.x >= l.x && p.x <= h.x && p.y >= l.y && p.y <= h.y

src/vec2.mli

@@ -0,0 +1,24 @@
+type t =
+  { x : int
+  ; y : int
+  }
+[@@deriving eq, ord, hash]
+
+val show : t -> string
+val pp : Format.formatter -> t -> unit
+val origin : t
+val up : t
+val down : t
+val left : t
+val right : t
+val directions : t list
+val of_tuple : int * int -> t
+val to_tuple : t -> int * int
+val ( + ) : t -> t -> t
+val ( - ) : t -> t -> t
+val ( = ) : t -> t -> bool
+val abs : t -> t
+val iter_region : t -> t -> (t -> unit) -> unit
+val fold_region : t -> t -> ('a -> t -> 'a) -> 'a -> 'a
+val find_bounds : int -> t Iter.t -> t * t
+val in_bounds : t -> t -> t -> bool