#include <iostream>
using namespace std;
void main()
{
     int n, m, x[50], y[50];
     register c;
     cout<<"Enter the number of first list's elements:";
     cin>>n;
     cout<<"Enter the first sorted list:"<<endl;
     for(register i=0;i<n;i++)
          cin>>x[i];
     cout<<"Now enter the number of second list's elements:";
     cin>>m;
     cout<<"Enter the second sorted list:"<<endl;
     for(c=0;c<m;c++)
          cin>>y[c];
     //------------------------------------------------------------
     cout<<"Union: ";
     char ch;
     i=0;
     for(i=0;i<n;i++)
          if(x[i]!=x[i-1])
                cout<<x[i]<<"\t";
     for(c=0;c<m;c++)
          if(y[c]!=y[c-1])
          {
                ch=0;
                for(i=0;i<n;i++)
                     if(y[c]==x[i])
                     {
                          ch=1;
                          break;
                     }
                if(ch!=1)
                     cout<<y[c]<<"\t";
          }
     cout<<endl;
     //------------------------------------------------------------
     cout<<"Subscription: ";
     c=0;
     for(i=0;i<n;i++)
          if(x[i]!=x[i-1])
                for(;y[c]<=x[i]&&c<m;c++)
                     if(y[c]!=y[c-1]&&x[i]==y[c])
                     {
                          cout<<x[i]<<"\t";
                          break;
                     }
}