文件目录

#include <iostream>
using namespace std;
int main()
{
    int m, n;
    cin >> m >> n;
    int k = 0, a;
    while (n--)
    {
        cin >> a;
        if (m >= a)
            m -= a;
        else
            k++;
    }
    cout << k;
    return 0;
}