import Control.Monad
import Data.Maybe
import qualified Data.ByteString.Char8 as BS
import Data.List

readInt = fst . fromJust . BS.readInt
readIntList = map readInt . BS.words
getInt = readInt <$> BS.getLine
getIntList = readIntList <$> BS.getLine

main = do
    [n,k] <- getIntList
    ass <- replicateM k $ do
        getLine
        as <- getIntList
        return as
    print . length . filter (==1) . map length . group . sort $ [1..n] ++ (concat ass)