#include <bits/stdc++.h>
using namespace std;
long long n, a[1000005], b[10000005], m;
set<int> s;
int main()
{
    cin>>n;
    for (int i=1;i<=n;++i)
    {
        cin>>a[i];
        s.insert(a[i]);
    }
    cin>>m;
    for (int i=1; i<=m;++i)
    {
        cin>>b[i];
        s.insert(b[i]);
    }
    for (int i:s) cout<<i<<" ";
}