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());
    }

    for (int i = 0; i < w.length - 1; i++) {
            for (int j = w.length - 1; j > i; j--) {
                if (w[j - 1] > w[j]) {
                    int tmp = w[j - 1];
                    w[j - 1] = w[j];
                    w[j] = tmp;
                }
            }
        }

    int count=0;
    for(int i=0;i<w.length-1;i++){
      l-=w[i];
      count++;
      if(l<w[i+1]){
        break;
      }
    }

    System.out.println(count);
  }
}