using System;

public class Program

{

    public static void Main()

    {

        int number1,number2,total;

        char operation;

        Console.WriteLine("\nenter any number");

        number1 = int.Parse(Console.ReadLine());

        Console.WriteLine("\nenter any number");

        number2 = int.Parse(Console.ReadLine());

        Console.WriteLine("\nPlease select your operation");

        operation = char.Parse(Console.ReadLine());

        switch(operation)

        {

            case 'X':total=number1*number2;

                Console.WriteLine("\ntotal number is " + total);

                break;

            case '-':total=number1-number2;

                Console.WriteLine("\ntotal number is " + total);

                break;

            case '+':total=number1+number2;

                Console.WriteLine("\ntotal number is " + total);

                break;

            case '/':total=number1/number2;

                Console.WriteLine("\ntotal number is " + total);

                break;

            default:Console.WriteLine("INVALID DATA");

                break;

        }

    }

}