using System;

public class Program

{

    public static void Main()

    {

        Console.Write("Enter your first number: ");

        float firstNumber = Int32.Parse(Console.ReadLine());

        Console.Write("Enter your second number: ");

        float secondNumber = Int32.Parse(Console.ReadLine());

        Console.Write("Enter your third number: ");

        float thirdNumber = Int32.Parse(Console.ReadLine());

        Console.Write("Enter your operator (+ - * /)  : ");

        string operator1 = Console.ReadLine();

        if (operator1 == "+")

        {

            Console.Write("Add {0} + {1} + {2} = {3}",firstNumber, secondNumber, thirdNumber, firstNumber + secondNumber + thirdNumber);

        }

        else if (operator1 == "-")

        {

            Console.WriteLine(" ");

            Console.Write("Subtract {0} - {1} - {2} = {3}",firstNumber, secondNumber, thirdNumber, firstNumber - secondNumber - thirdNumber);

        }

        else if (operator1 == "*")

        {

            Console.WriteLine(" ");

            Console.Write("Multiply {0} * {1} * {2} = {3}",firstNumber, secondNumber, thirdNumber, firstNumber * secondNumber * thirdNumber);

        }

        else if (operator1 == "/")

        {

            Console.WriteLine(" ");

            Console.Write("Divide {0} / {1} / {2} = {3}",firstNumber, secondNumber, thirdNumber, firstNumber / secondNumber / thirdNumber);

        }

    }

}