update the comment in day 15.1
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@ -88,8 +88,8 @@ let%expect_test "Day 15.1" =
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|> Iter.sort_uniq ~cmp:Int.compare
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in
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(* iterate thru the intersections by ascending x.
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if a point in the region can be a beacon,
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then every point in the region is. *)
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if a point in the region between two intersections can be a beacon,
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then every point in the region can be. *)
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let rec count_not_beacons count xs =
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match xs with
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| lx :: hx :: rest ->
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