Haskell: use sum instead of foldl

1 files changed, 1 insertions, 1 deletions

diff --git a/test.hs b/test.hs
index 02ff588..127dc62 100644
--- a/test.hs
+++ b/test.hs
@@ -9,4 +9,4 @@ main = do
     putStrLn "test"
     let n = 1000
     let a = [0..n-1]
-    print $ foldl (+) 0 (map (\i -> foldl (+) 0 (map (`gcd` i) a)) a)
+    print $ sum (map (\i -> sum (map (`gcd` i) a)) a)