import qualified Data.ByteString.Char8 as B
import Data.Maybe (fromJust)
import Data.List (sort)

solve :: Int -> Int -> [Int] -> Int
solve acc k (x:xs) | k >= x = solve (acc + 1) (k - x) xs
solve acc _ _               = acc

main :: IO ()
main = do
    input <- B.getContents
    let (k:_:xs) = map (fst . fromJust . B.readInt) (B.words input)
    print (solve 0 k (sort xs))