public class Apply
{
    public static void main (String[]args)
            {static int x;
                    int y;
                    x=10;
                    Apply.pt=new Apply;
                    pt.y=20;
              System.out.println("x");
              System.out.println("y");
            }
   
 class Best extends Apply
 {
     public static void main(String[]args)
     { static int z;
     z=30;
     System.out.println("x");
     System.out.println("y");
     System.out.println("z");
     }
 }
}