#include <iostream>	//cin, cout
#include <vector>	//vector
#include <algorithm> //sort,min,max
#include <string>	//string
#include <ios>		//fixed
#include <iomanip>	//setprecision

using namespace std;

int main() {

	int L, N;
	cin >> L >> N;

	vector<int> W(N);
	for (int i = 0; i < N; i++) {
		cin >> W[i];
	}

	sort(W.begin(), W.end());

	int ans = 0;
	int i = 0;
	while (L - W[i] >= 0) {
		ans++;
		L -= W[i];
		i++;
		if (i >= N) {
			break;
		}
	}

	cout << ans << endl;

	return 0;

}