import java.io.*;
import java.util.*;

class Main{
  public static void main(String[] args) {

    Scanner scan=new Scanner(System.in);
    int l=Integer.parseInt(scan.next());
    int n=Integer.parseInt(scan.next());
    int[] w=new int[n];
    for(int i=0;i<w.length;i++){
      w[i]=Integer.parseInt(scan.next());
    }

    Arrays.sort(w);

    int length=0;
    int count=0;
    for(int i=0;i<w.length;i++){
      length+=w[i];
      if(length<=l){
        count++;
      }else{
        break;
      }
    }

    System.out.println(count);
  }
}