Some analysis of code and performance

[advent-of-code-21.git] / advent25 / Main.hs

diff --git a/advent25/Main.hs b/advent25/Main.hs
index 9b6b7044c396be84d36b69a8f83f3428cfbd1509..9e30cbce7b7d84e62699f31ea4568a2f9ae2c653 100644 (file)
--- a/advent25/Main.hs
+++ b/advent25/Main.hs
@@ -1,6 +1,6 @@
 -- Writeup at https://work.njae.me.uk/2022/04/24/advent-of-code-2021-day-25/
 
-import qualified Data.Map as M
+import qualified Data.Map.Strict as M
 import Data.Map.Strict ((!), (\\), (!?))
 import Linear (V2(..), (^+^))
 import Data.List (unfoldr)