#![allow(unused_mut, non_snake_case, unused_imports)]

use std::iter;
use std::cmp::{max, min, Ordering};
use std::mem::swap;
use std::collections::{HashMap, BTreeMap, HashSet, BTreeSet, BinaryHeap, VecDeque};
use std::iter::FromIterator;

//　高速 EOF要
//macro_rules! input {(source = $s:expr, $($r:tt)*) => {let mut iter = $s.split_whitespace();input_inner!{iter, $($r)*}};($($r:tt)*) => {let mut s = {use std::io::Read;let mut s = String::new();std::io::stdin().read_to_string(&mut s).unwrap();s};let mut iter = s.split_whitespace();input_inner!{iter, $($r)*}};}
//macro_rules! input_inner {($iter:expr) => {};($iter:expr, ) => {};($iter:expr, $var:ident : $t:tt $($r:tt)*) => {let $var = read_value!($iter, $t);input_inner!{$iter $($r)*}};}
//macro_rules! read_value {($iter:expr, ( $($t:tt),* )) => {( $(read_value!($iter, $t)),* )};($iter:expr, [ $t:tt ; $len:expr ]) => {(0..$len).map(|_| read_value!($iter, $t)).collect::<Vec<_>>()};($iter:expr, chars) => {read_value!($iter, String).chars().collect::<Vec<char>>()};($iter:expr, usize1) => {read_value!($iter, usize) - 1};($iter:expr, $t:ty) => {$iter.next().unwrap().parse::<$t>().expect("Parse error")};}
// 低速 EOF不要
macro_rules! input {(source = $s:expr, $($r:tt)*) => {let mut iter = $s.split_whitespace();let mut next = || { iter.next().unwrap() };input_inner!{next, $($r)*}};($($r:tt)*) => {let stdin = std::io::stdin();let mut bytes = std::io::Read::bytes(std::io::BufReader::new(stdin.lock()));let mut next = move || -> String{bytes.by_ref().map(|r|r.unwrap() as char).skip_while(|c|c.is_whitespace()).take_while(|c|!c.is_whitespace()).collect()};input_inner!{next, $($r)*}};}
macro_rules! input_inner {($next:expr) => {};($next:expr, ) => {};($next:expr, $var:ident : $t:tt $($r:tt)*) => {let $var = read_value!($next, $t);input_inner!{$next $($r)*}};}
macro_rules! read_value {($next:expr, ( $($t:tt),* )) => {( $(read_value!($next, $t)),* )};($next:expr, [ $t:tt ; $len:expr ]) => {(0..$len).map(|_| read_value!($next, $t)).collect::<Vec<_>>()};($next:expr, chars) => {read_value!($next, String).chars().collect::<Vec<char>>()};($next:expr, usize1) => {read_value!($next, usize) - 1};($next:expr, $t:ty) => {$next().parse::<$t>().expect("Parse error")};}

/*
 <url:https://yukicoder.me/problems/no/334>
 問題文============================================================
 =================================================================
 解説=============================================================
 ================================================================
 */

fn kadomatsu(a: usize, b: usize, c: usize) -> bool {
    if b > a && b > c { return true; }
    if b < a && b < c { return true; }
    return false;
}

fn rec(state: usize, turn: bool, N: usize, K: &Vec<usize>) -> bool {
    for i in 0..N {
        if (state >> i & 1) == 1 { continue; }
        for j in i + 1..N {
            if (state >> j & 1) == 1 { continue; }
            for k in j + 1..N {
                if (state >> k & 1) == 1 { continue; }
                let next_state = state + (1 << i) + (1 << j) + (1 << k);
                if kadomatsu(K[i], K[j], K[k]) {
                    if rec(next_state, !turn, N, &K) == turn {
                        return turn;
                    }
                }
            }
        }
    }

    return !turn;
}

fn main() {
    input!(N:usize,K:[usize;N]);
    let N: usize = N;
    let K: Vec<usize> = K;
    for i in 0..N {
        for j in i + 1..N {
            for k in j + 1..N {
                let state = (1 << i) + (1 << j) + (1 << k);
                if kadomatsu(K[i], K[j], K[k]) {
                    if rec(state, false, N, &K) {
                        println!("{} {} {}", i, j, k);
                        return;
                    }
                }
            }
        }
    }
    println!("-1");
}