#include <bits/stdc++.h>
int a[100];
const int INF = 100000;
int main() {
  int n;
  int sum = 0;
  scanf("%d", &n);
  for (int i = 0; i < n; i++) {
    scanf("%d", &a[i]);
    sum += a[i];
  }
  int d = INF;
  int ans = 0;
  for (int i = 0; i < n; i++) {
    int e = abs(a[i] * n - sum);
    if (e < d) {
      ans = i;
      d = e;
    }
  }
  printf("%d\n", ans);
  return 0;
}
