fork(1) download 
  1. main = readLn >>= \k -> print (div (k*(k+1)) 2)
Success #stdin #stdout 0s 6300KB
comments (?)
stdin 
10
stdout 
55
https://ideone.com/LxxGhn
language:
Haskell (ghc 8.4.4)
created:
11 years ago
visibility:
public

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