class SuperX
{   SuperX() { foo(); } 
    public void foo ()
    {   a = 7; }

    protected int a;
}

class SubY extends SuperX
{   
    public void foo ()
    {   a = 11; }
    
    public static void main(String[] args)
    {   SubY obj = new SubY();
        System.out.println(obj.a);
    }
}