1 files changed, 31 insertions, 1 deletions
diff --git a/2025/ocaml/lib/application/d02p01.ml b/2025/ocaml/lib/application/d02p01.ml
index a40bd17..c4eebbe 100644
--- a/2025/ocaml/lib/application/d02p01.ml
+++ b/2025/ocaml/lib/application/d02p01.ml
@@ -1 +1,31 @@
-let solve input () = failwith "not implemented"
+let pp_range range =
+  Logs.app (fun m -> m "range=%s" range) ;
+  range
+
+let pp_tuple tuple =
+  let l, r = tuple in
+  Logs.app (fun m -> m "(left=%s, right=%s)" l r) ;
+  tuple
+
+(** [input_to_ranges input] is a list of strings that have been split on ','.
+    Requires: [input] to be a string in the format "12-34,56-78,90-100" *)
+let input_to_ranges input =
+  input |> String.split_on_char ','
+  |> List.filter (fun range -> range <> "")
+  |> List.map pp_range
+
+let list_to_tuple = function
+  | [l; r] ->
+      (l, r)
+  | _ ->
+      failwith "list cannot convert to tuple"
+
+let ranges_to_tuples ranges =
+  ranges
+  |> List.map (fun range ->
+      let sides = String.split_on_char '-' range in
+      list_to_tuple sides |> pp_tuple )
+
+let solve input () =
+  let _ = input |> input_to_ranges |> ranges_to_tuples in
+  0