29 lines
858 B
Haskell
29 lines
858 B
Haskell
import Data.Bifunctor (second)
|
|
import Data.List (group, sort, sortOn)
|
|
import qualified Data.HashMap.Strict as HMS
|
|
|
|
cardOrder :: HMS.HashMap Char Int
|
|
cardOrder = HMS.fromList $ zip "AKQT98765432J" [0..]
|
|
|
|
getWorth :: String -> [Int]
|
|
getWorth cards = handType : map (cardOrder HMS.!) cards
|
|
where
|
|
noJs = filter (/= 'J') cards
|
|
jCount = 5 - length noJs
|
|
groupedCards = map length $ group $ sort noJs
|
|
handType = case length groupedCards of
|
|
0 -> 1
|
|
1 -> 1
|
|
2 -> if minimum groupedCards == 1 then 2 else 3
|
|
3 -> if maximum groupedCards + jCount == 3 then 4 else 5
|
|
4 -> 6
|
|
5 -> 7
|
|
|
|
solve :: [String] -> Int
|
|
solve = sum . zipWith (*) [1..] . map snd . sortOn (map negate . getWorth . fst) . map parseLine
|
|
where
|
|
parseLine = second read . splitAt 5
|
|
|
|
main :: IO ()
|
|
main = print . solve . lines =<< readFile "data.txt"
|