n = int(input())
A = [int(input()) for _ in range(n)]
se = set(A)

P = [i for i in range(n)]
while 1:
    lst = []
    for i in range(n):
        if A[i] == P[i]:
            lst.append(i)
            if len(lst) == 2:
                break
    if len(lst) == 2:
        i, j = lst
        P[i], P[j] = P[j], P[i]
    else:
        break

lst = []
for i in range(n):
    if A[i] == P[i]:
        lst.append(i)
        
if lst:
    i = lst[0]
    ok = False
    for j in range(n):
        if i == j:
            continue
        if A[i] != P[j] and P[i] != A[j]:
            P[i], P[j] = P[j], P[i]
            ok = True
            break
    if not ok:
        print(-1)
        exit()
print(*P, sep="\n")