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

int w[10000];
int main() {
	int l, n,sum=0,i,ans=0;
	cin >> l >> n;
	for (i = 0; i < n; i++) {
		cin >> w[i];
	}
	sort(w, w + n);
	for (i = 0; i < n; i++) {
		sum += w[i];
		if (sum <= l)
			ans++;
	}
	cout << ans<<"\n";
}