题解

#include<iostream>
using namespace std;
int main()
{
    int m, n;
    cin >> m >> n;
    int s, cnt = 0;
    for(int i = 1; i <= n; i++)
    {
        cin >> s;
        if(m > s)
            m -= s;
        else
            cnt++;
    }
    cout << cnt;
}