def check(a, b, c):
    for i in [-1, 1]:
        if a * i < b * i and b * i > c * i and a != c:
            return True
    return False

N = int(input())
N2 = 1 << N
K = list(map(int, input().split()))
dp = [0] * (N2)

for s in range(N2):
    if dp[s]:
        continue
    for a in range(N):
        if (s >> a) & 1:
            continue
        for b in range(a + 1, N):
            if (s >> b) & 1:
                continue
            for c in range(b + 1, N):
                if (s >> c) & 1:
                    continue
                if check(K[a], K[b], K[c]):
                    ns = s
                    ns |= 1 << a
                    ns |= 1 << b
                    ns |= 1 << c
                    dp[ns] = 1

for a in range(N):
    for b in range(a + 1, N):
        for c in range(b + 1, N):
            if check(K[a], K[b], K[c]):
                s = (N2 - 1) ^ (1 << a)
                s ^= 1 << b
                s ^= 1 << c
                if dp[s] == 0:
                    print(a, b, c)
                    exit()
print(-1)