using System;

namespace Calculator {

class Calculator {

    public int number1 , number2;

    public Calculator(int num1 , int num2)

    {

        number1 = num1;

        number2 = num2;

    }

// Function to perform operation

// By changing sign of integers

public static Calculator operator -(Calculator c1)

{

    c1.number1 = -c1.number1;

    c1.number2 = -c1.number2;

    return c1;

}

// Function to print the numbers

public void Print()

{

    Console.WriteLine ("Number1 = " + number1);

    Console.WriteLine ("Number2 = " + number2);

}

}

public class EntryPoint

{

    // Driver Code

    public static void Main(String []args)

    {

        // using overloaded - operator

        // with the class object

        Calculator calc = new Calculator(13, -29);

        calc = -calc;

        // To display the result

        calc.Print();

    }

}

}