#define _CRT_SECURE_NO_WARNINGS
#define _USE_MATH_DEFINES
#include <iostream>
#include <map>
#include <list>
#include <cstdio>
#include <cmath>
#include <cstring>
#include <string>
#include <vector>
#include <algorithm>
#include <utility>
#include <queue>
#include <iomanip>
#define INF 1050000000

using namespace std;

int main(void)
{
	int N, L;
	int W[10000];
	int cnt = 0;
	int sum = 0;

	cin >> L >> N;

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

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

	cout << cnt << endl;
}