18 lines
522 B
Haskell
18 lines
522 B
Haskell
{-# LANGUAGE LambdaCase #-}
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import Data.List.Split
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import Data.List
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main = do
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content <- chunksOf (25*6) <$> head <$> lines <$> readFile "input"
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print (day8a content)
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putStrLn (day8b content)
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count x = (length . filter (==x))
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day8a xs = let l = toLayers xs in
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(count '2' l) * (count '1' l)
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where toLayers xs = snd $ minimum [(count '0' x, x) | x <- xs]
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day8b xs = intercalate "\n" $ map (map (\case '0'->' ';'1'->'•')) $ chunksOf 25 img
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where img = map (head . filter (/='2')) $ transpose xs
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