#include<iostream>
using namespace std;
int main() {
	int L, N, W[10000], i, swap;
	cin >> L >> N;
	for (i = 0; i < N; i++) {
		cin >> W[i];
		for (int j = i; j > 0; j--) {
			if (W[j] < W[j - 1]) {
				swap = W[j];
				W[j] = W[j - 1];
				W[j - 1] = swap;
			}
			else {
				break;
			}
		}
	}
	i = 0;
	while (i < N) {
		L -= W[i];
		if (L < 0) {
			break;
		}
		i++;
	}
	cout << i << endl;
	return 0;
}