#include <iostream>
#include <algorithm>
using namespace std;

int L, N, W[12345];

int main() {
	cin >> L;
	cin >> 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]) {
			break;
		}

		cnt++;
		L -= W[i];
	}

	cout << cnt << "\n";

	return 0;
}