#include "bits/stdc++.h"

using namespace std;

#define Endl endl

int  main() {

	int l, n;
	int w[10010];

	cin >> l >> n;
	for (int i = 0; i < n; i++) cin >> w[i];

	sort(w, w + n);

	int cnt = 0;

	for (int i = 0; i < n; i++) {
		if (l - w[i] >= 0) {
			l -= w[i];
			cnt++;
		}
		else break;
	}

	cout << cnt << Endl;

	return 0;
}