#include <bits/stdc++.h>
#include <vector>
using namespace std;
#include <atcoder/all>
using namespace atcoder;
using ll = long long;
int N;
vector<int> A;

void solve(){
    set<int> st;
    for(int i = 0;i<N;i++){
        st.insert(i+1);
    }
    vector<int> a(N),b(N);
    vector<int> bin[2];
    for(int i = 0;i<N;i++){
        bin[A[i]%2].push_back(i);
    }
    if(bin[0].size() > 1){
        int l = bin[0][0];
        int r = bin[0][1];
        a[l] = 2;
        a[r] = 3;
        b[r] = 2;
        b[l] = 3;
        st.erase(2);
        st.erase(3);
    }else if(bin[1].size() >1){
        int l = bin[1][0];
        int r = bin[1][1];
        a[l] = 1;
        a[r] = 2;
        b[r] = 1;
        b[l] = 2;
        st.erase(1);
        st.erase(2);
    }else{
        cout<<-1<<endl;
        return;
    }
    for(int i = 0;i<N;i++){
        if(a[i] != 0){
            continue;
        }
        a[i] = *st.begin();
        b[i] = *st.begin();
        st.erase(st.begin());
    }
    for(int i = 0;i<N;i++){
        cout << a[i] << " ";
    }
    cout << endl;
    for(int i = 0;i<N;i++){
        cout << b[i] << " ";
    }
    cout << endl;
}

signed main(){
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cin >> N;
    A = vector<int>(N);
    for (int i = 0; i < N; i++) {
        cin >> A[i];
    }
    solve();
}