using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.IO;

class Meguru
{

    public Meguru() { }
    public static int Main()
    {
        new Meguru().calc();
        return 0;
    }

    Scanner cin;

    void calc()
    {
        cin = new Scanner();
        int N = cin.nextInt();
        int[] K = new int[N];
        for (int i = 0; i < N; i++)
        {
            K[i] = cin.nextInt();
        }

        bool[] dp = new bool[1 << N];
        for (int t = 0; t < (1 << N); t++)
        {
            for (int i = 0; i < N && !dp[t]; i++)
            {
                if ((t >> i) % 2 == 0) continue;
                for (int j = i + 1; j < N && !dp[t]; j++)
                {
                    if ((t >> j) % 2 == 0) continue;
                    if (K[j] == K[i]) continue;
                    for (int k = j + 1; k < N && !dp[t]; k++)
                    {
                        if ((t >> k) % 2 == 0) continue;
                        if (K[k] == K[i]) continue;
                        if (K[k] == K[j]) continue;
                        if (K[j] <= K[k] && K[j] >= K[i]) continue;
                        if (K[j] >= K[k] && K[j] <= K[i]) continue;
                        if (!dp[t - (1 << i) - (1 << j) - (1 << k)])
                        {
                            dp[t] = true;
                            if (t == (1 << N) - 1)
                            {
                                Console.WriteLine(i + " " + j + " " + k);
                                return;
                            }
                            break;
                        }
                    }
                }
            }
        }
        Console.WriteLine(-1);
    }
}





class Scanner
{
    string[] s;
    int i;

    char[] cs = new char[] { ' ' };

    public Scanner()
    {
        s = new string[0];
        i = 0;
    }

    public string next()
    {
        if (i < s.Length) return s[i++];
        string st = Console.ReadLine();
        while (st == "") st = Console.ReadLine();
        s = st.Split(cs, StringSplitOptions.RemoveEmptyEntries);
        i = 0;
        return next();
    }

    public int nextInt()
    {
        return int.Parse(next());
    }

    public long nextLong()
    {
        return long.Parse(next());
    }

    public double nextDouble()
    {
        return double.Parse(next());
    }

}