using System;

public class Program

{

    interface i{

        int getVal();

    }

    class a: i {

        public int getVal() { return 1; }

    }

    class b: a {

        public new int getVal() { return 1 + base.getVal(); }

    }

    public static void Main()

    {

        i aobj = new a();

        i bobj = new b();

        b directBobj = new b();

        Console.WriteLine(aobj.getVal());

        Console.WriteLine(bobj.getVal());

        Console.WriteLine(directBobj.getVal());

    }

}