33 lines
756 B
Haskell
33 lines
756 B
Haskell
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module Day1.Main (main) where
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import Data.List
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import System.IO
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import Control.Monad
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main :: IO ()
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main = do
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putStrLn "Day 1"
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handle <- openFile "app/Day1/input" ReadMode
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contents <- hGetContents handle
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let r1 = part1 contents
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putStrLn $ "part 1: " ++ show r1
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let r2 = part2 contents
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putStrLn $ "part 2: " ++ show r2
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parseInput :: String -> [Int]
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parseInput contents = map sum foodItems
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where
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input = lines contents
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elves = foldr (\a b -> if a == "" then [] : b else (a : head b) : tail b) [[]] input
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foodItems = (map . map) (read :: String -> Int) elves
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part1 :: String -> Int
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part1 = maximum . parseInput
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part2 :: String -> Int
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part2 = sum . (take 3) . reverse . sort . parseInput
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