#include <iostream>
using namespace std;
int main()
{
    int n;
    cin >> n;
    int arr[n];

    for ( int i = 0 ; i < n ; i ++ )
    {
        cin >> arr[i];
    }

    int max = arr[0];
    for ( int b = 1 ; b < n ; b ++ )
    {
        if ( arr[b] > max )
        {
            max = arr[b];
        }
    }


    int sum = max - arr[0];
    for ( int c = 0 ; c < n ; c ++ )
    {
        if ( arr[c] != max && (max - arr[c]) > sum )
        {
            sum = max - arr[c];
        }
    }

    for ( int x = 0 ; x < n ; x ++ )
        {
            if ( arr[x] == max - sum )
           {
             cout << x;
           }
        }


    return 0;
}