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36 lines
826 B
36 lines
826 B
module Main where
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main :: IO ()
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main = interact solution
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type Board = [[Int]]
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scnd :: (b -> c) -> (a, b) -> (a, c)
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scnd f (a, b) = (a, f b)
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frst :: (a -> c) -> (a, b) -> (c, b)
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frst f (a, b) = (f a, b)
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solution :: String -> String
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solution =
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show
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-- ([Int], [Boards])
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. scnd toBoards
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. scnd (map (map (read :: String -> Int)))
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. scnd (filter (not . null))
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. scnd (map words)
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. frst (map (read :: String -> Int))
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. frst splitcomma
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. (\x -> (head x, tail x))
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. lines
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where
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splitcomma :: String -> [String] -- "stole" the implementation from `words`
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splitcomma s = case dropWhile (==',') s of
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"" -> []
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s' -> w : splitcomma s''
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where
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(w, s'') = break (==',') s'
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toBoards :: [[Int]] -> [Board]
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toBoards [] = []
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toBoards (a:b:c:d:e:r) = [a,b,c,d,e]:toBoards r
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