class A
{
    A Show()
    {
        System.out.println("first");
        return this;
    }
}
class B extends A
{
    B Show()
    {
        super.Show();
        System.out.println("second");
        return this;
    }
}
class C
{
    public static void main(String[] args)
    {
        B r = new B();
        r.Show();
    }
    
}