#include <bits/stdc++.h>
using namespace std;
int main()
{
    int m,n,a[100],sum = 0,b = 0;
    cin>>m>>n;
    for (int i = 0;i<n;i++)
    {
        cin>>a[i];
    }
    for (int i = 0;i<n;i++)
    {
        sum += a[i];
        if (sum >m)
        {
            b++;
            sum -= a[i];
        }
        //else
        //{
            //sum += a[i];
        //}
    }
    cout<<b;
    return 0;
}