#include <iostream>
#include <fstream>
#include <cstdlib>
using namespace std;

int main()
{
    freopen("linobaci.in", "r", stdin);
    freopen("linobaci.out", "w", stdout);
    long long n, sum;
    scanf("%lld%lld", &n, &sum);
    long long l = 0, num;

    if(sum == 1)
    {
        for(l = 1; l < n; l++)
        {
            scanf("%d", &num);
            if(num > sum)
            {
                break;
            }
            else
            {
                sum += num;
            }
        }
    }
    printf("%d\n", l);
    return 0;
}