#include<stdio.h>
#include<stdlib.h>
#include<string>
#include<iostream>
#include <algorithm>
#include <functional>
using namespace std;
#define MAX 10000
int w[MAX];
int main() {
	int c = 0, i, l, n, s = 0;
	cin >> l >> n;
	for (i = 0; i < n; ++i) {
		cin >> w[i];
	}
	sort(w, w + n);
	for (i = 0; i < n; ++i) {
		if (s + w[i] <= l) {
			s += w[i];
			c++;
		}
		else {
			break;
		}
	}
	cout << c << endl;
	return 0;

}