n = int(input())
A = []
C = [0 for i in range(50)]
for _ in range(n):
    a = int(input())
    C[a] += 1
    A.append(a)
for i in range(n):
    if C[i] == n:
        print(-1)
        exit()

ANS = [i for i in range(n)]
for i in range(n):
    if ANS[i] == A[i]:
        for j in range(n):
            if j == i:
                continue
            if A[j] != ANS[i]:
                ANS[i], ANS[j] = ANS[j], ANS[i]
                break
print(*ANS, sep='\n')