#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  int a[n];
  for (int i = 0; i < n; i++) {
    cin >> a[i];
  }
  int count = 0;
  while (1) {
    for (int i = 0; i < n; i++) {
      if (a[i] <= i) {
        cout << i + 1;
        return 0;
      }
      a[i] = a[i] - n;
    }
  }
}
