using System;

​

public class Calculator

{

    private string name;

    public string getname()

    {

        return name;

    }

    public void newname ( string _name)

    {

        name = _name;

    }

    public int Add (int num1, int num2)

    {

        return (num1 + num2);

    }

    public int Add (int num1, int num2, int num3)

    {

        return (num1 + num2 + num3);

    }

    public float Add (float Num1, float Num2)

    {

        return (Num1 + Num2);

    }

    public string Add (string value1, string value2)

    {

        return (value1 + value2);

    }

}

public class Program

{

    public static void Main()

    {

    }

}