#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
int main() {
	ll L;
	ll N;
	cin >> L;
	cin >> N;
	ll W[N + 1];
	for (ll i = 0; i < N; i++) {
		cin >> W[i];
	}
	sort(W, W + N);
	ll i = 0;
	while (L >= 0) {
		L -= W[i];
		i++;
	}
	cout << i-1 << endl;
}