using System;

public class Program

{

    public static void Main()

    {

        Console.Write("N1: ");

        var N1 = int.Parse(Console.ReadLine());

        Console.Write("N2: ");

        var N2 = int.Parse(Console.ReadLine());

        Console.Write("Operator (\"+\" \"-\" \"*\" \"/\" \"%\")");

        var Operator = Console.ReadLine();

        var N3 = 0;

        // Main

        switch (Operator) {

            case "+":

                N3 = N1 + N2;

                break;

            case "-":

                N3 = N1 - N2;

                break;

            case "*":

                N3 = N1 * N2;

                break;

            case "/":

                if (N2 != 0) {

                    N3 = N1 / N2;

                } else {

                    Console.WriteLine("Cannot divide by zero");

                }

                break;

            case "%":

                N3 = N1 % N2;

                break;

            default:

                Console.WriteLine("Ne si go napisal");

                break;

        }

        // Output

        Console.WriteLine("");

        Console.WriteLine("{0} {1} {2} = {3}", N1, Operator, N2, N3);

    }

}