import java.util.Scanner
import java.io.{BufferedReader,InputStreamReader}
object no5{
    def main(args:Array[String]):Unit={
        val br = new BufferedReader(new InputStreamReader(System.in))
        val w = br.readLine().toInt
        val n = br.readLine().toInt
        val list = br.readLine().split(" ").map(_.toInt).toList.sorted
        val res = for(i <- 1 to n; if list.take(i).sum <= w) yield list(i-1)
        println(res.size)
    }
}