#include<iostream>
#include<cmath>
using namespace std;
int main(){
	int n,sum=0,sum1=0,y,u;
	cin>>n;
	int a[100];
	for(int y=1;sum<(n*n);)
	{
	cin>>a[y];
	sum+=a[y];
	y++;}cou<<y;
		return 0;
}