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  1. import Data.Ratio
  2. import Data.List
  3.  
  4. main = do
  5. let zielone = replicate 10 5 ++ replicate 5 2
  6. biale = replicate 2 5 ++ replicate 3 2
  7. omega = [ x+y | t <- zielone, x <- (t:biale), y <- delete x (t:biale) ]
  8. print $ (length (filter (==7) omega)) % (length omega)
Success #stdin #stdout 0s 6276KB
stdin
Standard input is empty
stdout
26 % 45