https://www.colorless-sight.jp:443/wiki/?ProjectEular%2FProblem1
[[ProjectEular]] -- Problem 1 module Main (main) where main :: IO () main = print $ problem1 problem1 :: (Integral a) => a problem1 = sum [ x | x <- [1..999], (mod x 3 == 0 || mod x 5 == 0) ]