#include <iostream>
#include <vector>
#include <algorithm>
#include <map>
using namespace std;


int main()
{
    cin.tie(nullptr);
    cout.tie(nullptr);
    ios_base::sync_with_stdio(false);
    int n;
    cin >> n;
    map<int, int>m;
    for (size_t i = 0; i < n; i++)
    {
        int a;
        cin >> a;
        m[a] = i + 1;
    }
    int q = n + 1;
    for (auto i : m)
    {
        if (q > i.second) q = i.second;
    }
    cout << q << endl;
    return 0;
}