#include <bits/stdc++.h>
using namespace std;

int main() {
	int l, n, ans = 0, i = 0;
	int w[10100];
	cin >> l >> n;
	for (i = 0; i < n; ++i) {
		cin >> w[i];
	}
	sort(w, w+n);
	for (i = 0; ans + w[i] <= l && i < n ; ++i) {
		ans += w[i];
	}
	cout << i << endl;
	return 0;
}