N = int(input())
A = []
for i in range(N):
  A.append(int(input()))
dp = [set() for i in range(N)]
for i, x in enumerate(A):
  for j in range(N):
    if j != x:
      dp[i].add(j)

ans = -float('inf')
import random
l = []
for i in range(300000):
  st = set()
  temp = 0
  for d in dp:
    d -= st
    while True:
      if len(d) == 0:
        break
      item = random.sample(d, 1)
      if not item[0] in st:
        st.add(item[0])
        l.append(item[0])
        temp += 1
        break
  if temp == N:
    break
if len(l) < N:
  print(-1)
  exit()
for d in l:
  print(d)