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diff --git a/2025/ocaml/lib/application/d04p01.ml b/2025/ocaml/lib/application/d04p01.ml
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--- a/2025/ocaml/lib/application/d04p01.ml
+++ /dev/null
@@ -1,48 +0,0 @@
-open Domain
-
-let err_empty_input = "input is empty"
-
-let rec solve input () =
- if input = "" then Error err_empty_input
- else
- let matrix = Matrix.M.of_string input in
- let count_paper lst = List.length @@ List.filter (fun c -> c <> ".") lst in
- let accessible_rolls_of_paper = ref 0 in
- for y = 0 to Array.length matrix - 1 do
- for x = 0 to Array.length matrix.(y) - 1 do
- if matrix.(y).(x) = "." then ()
- else
- let neighbour_coords = Matrix.M.get_valid_neighbours matrix x y in
- let neighbours =
- List.map
- (fun (x', y') -> Matrix.M.get matrix x' y')
- neighbour_coords
- in
- let paper_count = count_paper neighbours in
- let is_accessible = paper_count < 4 in
- if is_accessible then
- accessible_rolls_of_paper := !accessible_rolls_of_paper + 1 ;
- print_iteration_debug_msg x y neighbour_coords neighbours paper_count
- is_accessible
- done
- done ;
- Ok !accessible_rolls_of_paper
-
-and print_iteration_debug_msg x y neighbour_coords neighbours paper_count
- is_accessible =
- Logs.debug (fun m ->
- m
- "coords=(%d,%d) neighbour_coords=[%s] neighbours=[%s] paper=%d \
- is_accessible=%B"
- x y
- (List.fold_left
- (fun acc (x, y) ->
- if acc = "" then
- " (" ^ string_of_int x ^ "," ^ string_of_int y ^ "); "
- else acc ^ "(" ^ string_of_int x ^ "," ^ string_of_int y ^ "); " )
- "" neighbour_coords )
- (List.fold_left
- (fun acc neighbour ->
- if acc = "" then " " ^ neighbour ^ "; " else acc ^ neighbour ^ "; " )
- "" neighbours )
- paper_count is_accessible )