/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
import java.util.*;
/**
 *
 * @author tokio
 */
public class suuzi {
    public static void main(String[] args){
        Scanner scanner = new Scanner(System.in);
        int L = scanner.nextInt();
        int N = scanner.nextInt();
        int[] W = new int[N];
        int sum = 0;
        int count = 0;
        
        for(int i=0 ; i<N ; i++){
            W[i] = scanner.nextInt();
        }
       
        Arrays.sort(W);
        
       
        //while(L >= sum){
           // sum += W[i];
           // i++;
       // }
       for(int i = 0 ; i < N ; i++){
           if(L >= sum + W[i]){
             sum += W[i];
               count++;
           }else{
               break;
           }
       }
    
        System.out.println(count);
        
    }
}