#include <stdio.h>
#include <iostream>
using namespace std;
#define N_MAX 100000
int N, vetor[N_MAX], vetor2[N_MAX],i;
int main (){
cin>>N;
for (i = 0; i < N; i++)
cin>>vetor[i];
vetor2[0] = vetor[0];
for (i = 1; i < N; i++)
vetor2[i] = vetor2[i - 1] + vetor[i];
for (i = 0; i < N; i++)
if (vetor2[i] == vetor2[N - 1] - vetor2[i])
break;
cout<<i + 1<<endl;
return 0;
}
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