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module Main where
import Data.Char (digitToInt)
import Data.List (sort)
import Data.Set (Set)
import qualified Data.Set as Set
import Control.Monad
parseLines :: [String] -> [String]
parseLines allLines = unwords first : next
where (first, rest) = break null allLines
next = if null rest then [] else parseLines (tail rest)
main :: IO ()
main = do
n <- parseLines . lines <$> readFile "input/06"
print $ sum $ map (Set.size . Set.fromList . filter (/= ' ')) n
print $ sum $ map (Set.size . foldl1 Set.intersection . map Set.fromList . words) n
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