class A
{
    
    void ADD()
    {
        
        System.out.println("enter your name ");
    }
}
class B extends A
{
void SUB()
    {
        
        System.out.println("Enter your enrollemnet number");
    }
}
class C extends A
 
{
    void MULTI()
    {
        
        System.out.println("enter your college name ");
    }
}
    
class D
{
    public static void main(String[] args)
    {
       B r = new B();
       C r2= new C();
       
       r.ADD(); r.SUB();
       r2.ADD(); r2.MULTI();
    }
}