#include <bits/stdc++.h>
using namespace std;

int a[1000005];

int main()
{
    int d, n, ans = 0, j = 1;
    cin >> d >> n;
    for (int i = 1; i <= n; i++) cin >> a[i];
    while (d > 0)
    {
        if (j > n) j = 1;
        d -= a[j];
        j++;
        ans++;
    }
    cout << ans << endl;
    return 0;
}