1: optimise (as if it's necessary)

1 files changed, 1 insertions, 1 deletions

diff --git a/2024/1.hs b/2024/1.hs
index c3871d6..3301ceb 100644
--- a/2024/1.hs
+++ b/2024/1.hs
@@ -9,5 +9,5 @@ main = do
           . map (\l -> let [x,y] = words l in (read @Int x, read y))
           . lines <$> getContents
   print $ sum (zipWith (\x y -> abs (x - y)) a b)
-  let hist = Map.fromListWith (+) (map (,1 :: Int) b)
+  let hist = Map.fromAscListWith (+) (map (,1 :: Int) b)
   print $ sum [n * Map.findWithDefault 0 n hist | n <- a]