#include "iostream"
#include "algorithm"
using namespace std;
int main()
{
unsigned long long int n, n1, a[200001],i,j;
cin>>n;
for (i=0;i<n;i++)
{
cin>>a[i];
}
cin>>n1;
for (j=n;j<n+n1;j++)
{
cin>>a[j];
}
sort (a+0,a+n+n1);
for (i=0;i<n+n1;i++)
{
if (a[i]!=a[i+1])
cout<<a[i]<<" ";
}
return 0;
}