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