#include <iostream>
#include <vector>
#include <string>
#include <sstream>
#include <algorithm>
#include <stdio.h>
#include <functional>
using namespace std;

int main()
{
	int L, N;
	vector<int> W;
	cin >> L;
	cin >> N;
	for (int i = 0; i < N; i++) {
		int j = 0;
		cin >> j;
		W.push_back(j);
	}

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

	int sum_n = 0;
	int i = 0;
	for (; i < N; i++) {
		if (L > sum_n + W[i]) {
			sum_n += W[i];
		}
		else {
			break;
		}
	}

	cout << i << endl;
}