#include <iostream>
#include <algorithm>

using namespace std;

int main()
{
    int l, n, a[10010];
    int ans = 0;
    
    cin >> l >> n;
    
    for (int i = 0; i < n; i++) cin >> a[i];
    
    sort(a, a+n);
    
    for (int i = 0; i < n; i++) {
        if (l >= a[i]) {
            l -= a[i];
            ans++;
        }
        else {
            break;
        }
    }
    
    cout << ans << endl;
    
}