From 7a3141b79caf7023ae02ec04dae85a8946d370a9 Mon Sep 17 00:00:00 2001
From: Alexandre Jesus <adbjesus@gmail.com>
Date: Mon, 1 Dec 2025 14:06:26 +0000
Subject: Add time measurement and ocamlformat

---
 bin/dune    | 2 +-
 bin/main.ml | 4 +++-
 flake.nix   | 1 +
 3 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/bin/dune b/bin/dune
index 73686e6..4874544 100644
--- a/bin/dune
+++ b/bin/dune
@@ -5,4 +5,4 @@
 (executable
  (public_name aoc2025)
  (name main)
- (libraries aoc2025))
+ (libraries aoc2025 unix))
diff --git a/bin/main.ml b/bin/main.ml
index 2cddf84..0ffbaac 100644
--- a/bin/main.ml
+++ b/bin/main.ml
@@ -37,7 +37,9 @@ let () =
     let fn = day_part_fn args.(2) args.(1) in
     let ic = open_in args.(0) in
     try
-      fn ic
+      let s = Unix.gettimeofday () in
+      fn ic;
+      Printf.printf "%.3f" ((Unix.gettimeofday ()) -. s)
     with e ->
       close_in_noerr ic;
       raise e
diff --git a/flake.nix b/flake.nix
index f9de1fc..8146942 100644
--- a/flake.nix
+++ b/flake.nix
@@ -23,6 +23,7 @@
         ] ++ (with ocamlPackages; [
           ocaml
           ocaml-lsp
+          ocamlformat
         ]);
       };
     };
-- 
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