import sys
sys.setrecursionlimit(5*10**5)
input = sys.stdin.readline
from collections import defaultdict, deque, Counter
from heapq import heappop, heappush
from bisect import bisect_left, bisect_right
from math import gcd

n = int(input())
a = list(map(int,input().split()))

if max(a) - min(a) >= n:
    print(-1)
    exit()
if len(set(a)) != n:
    x = [[] for i in range(max(a)+10)]
    for i in range(n):
        x[a[i]].append(i)
    ok = 1
    p1 = list(range(1, n+1))
    p2 = list(range(1, n+1))

    for i in range(max(a)+10):
        if len(x[i]) >= 2:
            s,t = x[i][0], x[i][1]
            p2[t], p2[s] = p2[s], p2[t]
            break
else:
    a = [[a[i], i] for i in range(n)]
    a.sort()
    ok = 0
    p1 = [0]*(n)
    p2 = [0]*(n)
    for i in range(n):
        p1[a[i][1]] = i+1
        p2[a[i][1]] = i+1
    for i in range(2, n):
        x,xi = a[i-2]
        y,yi = a[i-1]
        z,zi = a[i]
        if x+2 == y+1 == z:
            p1[xi], p1[yi], p1[zi] =  p1[yi], p1[zi], p1[xi]
            p2[xi], p2[yi], p2[zi] =  p2[zi], p2[xi], p2[yi]
            ok = 1

if ok:
    print(*p1)
    print(*p2)
else:
    print(-1)