using System;

public class Program

{

    public static void Main()

    {

        var  myObj =  new CA();

        var xyz = new {  A = "123" };

        if (myObj is ICA)

        {

           Console.WriteLine("Y");

        }

        else

        {

           Console.WriteLine("N");

        }   

        if (xyz is ICA)

        {

           Console.WriteLine("Y");

        }

        else

        {

           Console.WriteLine("N");

        }   

    }

    public interface ICA

    {

       string A {get;set;}  

    }

    public class CA : ICA

    {

        public string A {get;set;}  

    }

}