5 lines
194 B
Haskell
5 lines
194 B
Haskell
-- 10 - sum prime smaller 2 million
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eres :: Integral a => [a] -> [a]
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eres (x:xs) = if x*x < last xs then x:eres (filter (\y -> rem y x /= 0) xs) else (x:xs)
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problem_10 = sum $ eres [2..2000000]
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