Advent of Code 2021
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module Day7 where
import System.IO (openFile, IOMode (ReadMode), hClose, hGetContents)
import Data.Text (splitOn, unpack, pack)
import Prelude hiding (splitAt)
splitAt :: String -> String -> [String]
splitAt delimiter str = map unpack $ splitOn (pack delimiter) $ pack str
fuel :: Int -> Int -> Int
fuel to from = abs $ from - to
main :: IO ()
main = do
input <- openFile "inputs/7.txt" ReadMode
contents <- hGetContents input
let crabby = map read $ splitAt "," contents :: [Int]
print $ minimum [ sum $ map (fuel i) crabby | i <- [minimum crabby .. maximum crabby] ]
hClose input