# 苦手dfs練習
# N小さいので3個を全探索して、門松列になれば、残りを作りまたdfs

N = int(input())
K = list(map(int, input().split()))

import sys
sys.setrecursionlimit(10**7)

def dfs(LIST):
    L = len(LIST)
    if L < 3:
        return -1
    
    for a in range(L):
        for b in range(a+1, L):
            for c in range(b+1, L):
                temp = [LIST[a], LIST[b], LIST[c]]
                if len(set(temp)) == 3:
                    if max(temp) == LIST[b] or min(temp) == LIST[b]:
                        remaining = []
                        for l in range(L):
                            if l != a and l != b and l != c:
                                remaining.append(LIST[l])
                        if dfs(remaining) == -1:
                            return [a, b, c]
    return -1
    
ans = dfs(K)
if ans == -1:
    print(-1)
else:
    print(*ans)