#include <stdio.h>
#include <math.h>

#pragma warning(disable: 4996)

int main() {
    int A[20];
    int length = 0;
    scanf("%d", &length);
    if (length < 3 || length > 20) {
        printf("invalid input data\n");
        return 0;
    }
    for (int i = 0; i < length; i++) {
        scanf("%d", &A[i]);
        if (A[i] < 0 || A[i] > 1000) {
            printf("invalid input data");
            return 0;
        }
    }
    int summ = 0;
    for (int i = 0; i < length; i++) {
        summ += A[i];
    }
    int summ_left = 0, summ_right = summ, diff = summ;
    for (int i = 0; i < length; i++) {
        summ_right -= A[i];
        if (abs(summ_left - summ_right) > diff) {
            diff = abs(summ_left - summ_right);
        }
        summ_left += A[i];
    }
    summ_right = summ;
    summ_left = 0;
    for (int i = 0; i < length; i++) {
        summ_right -= A[i];
        if (abs(summ_left - summ_right) == diff) {
            printf("%d ", i);
        }
        summ_left += A[i];
    }
}