#include<iostream>
#include<algorithm>
using namespace std;
int main()
{
	int l, n, j, i[10000],r=0;
	cin >> l >> n;
	for (j = 0; j < n; j++)
	{
		cin >> i[j];
	}
	sort(i, i + n);
	j = 0;
	do{
		r += i[j];
		j++;
	} while (r<=l&&j<=n);
	cout << j-1;
}