#include "iostream"
#include "algorithm"
#include "set"
using namespace std;
int main()
{
set <unsigned long long int> a;
long long int n,n1,i,j,x;
cin>>n;
for (i=0;i<n;i++)
{

cin>>x;

a.insert(x);
}
cin>>n1;
for (j=n;j<n+n1;j++)
{
cin>>x;
a.insert(x);
}
//sort (a+0,a+n+n1);
for (set <unsigned long long int>::iterator i=a.begin();i!=a.end();i++)
{

cout<<*i<<" ";
}
return 0;
}