using System;

public class Program

{

     class Calculator

    {

        private string name;

        public Calculator (string _name) {

        name =_name;

         }

         public string getname()

         {

            return name;

         } 

         public int add ( int num1, int num2)

         {

             return(num1 + num2);

         }

    }   

    public static void Main()

}