15 lines
521 B
Haskell
15 lines
521 B
Haskell
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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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toLayers xs = snd $ minimum [((length . filter (=='0')) x, x) | x <- xs]
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day8a xs = let l = toLayers xs in
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(length $ filter (=='2') l) * (length $ filter (=='1') l)
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day8b xs = intercalate "\n" $ map (map (\x->if x=='0' then ' ' else '•')) $ chunksOf 25 img
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where img = map (foldr (\x y->if x=='2' then y else x) '2') $ transpose xs
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