import java.util.Scanner
import java.io.{BufferedReader,InputStreamReader}
import scala.collection.mutable.ListBuffer
object no5{
    def main(args:Array[String]):Unit={
        val scan = new Scanner(System.in)
        val w = scan.nextInt
        val n = scan.nextInt
        var list:ListBuffer[Int] = ListBuffer[Int]()
        for(i <- 1 to n ) list += scan.nextInt
        list = list.sorted
        val res = for(i <- 1 to n; if list.take(i).sum <= w) yield list(i-1)
        println(res.size)
    }
}