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

int main() {
	int l, n;
	int w[10000];
	cin >> l >> n;
	for(int i=0; i<n; i++)
		cin >> w[i];

	sort(w, w+n);
	int r = 0;
	while(r < n && l >= w[r]) {
		l -= w[r++];
	}
	cout << r << endl;
}