using System;

public class Program

{

    public static void Main()

    {

        // Q1

        int prod = 1;

        for (int i = 2; i<=12; i+=2)

        {

            prod = prod*i;

        }

            Console.WriteLine(prod);

        // Q2 Ask for three numbers

        int strCount = 1;

        int isum = 0;

        while (strCount <=3)

        {

        Console.WriteLine("Please enter a number");

        string sOne = Console.ReadLine();

        int iOne = Convert.ToInt32(sOne);

        isum = iOne + isum;

            strCount++;

        }

        // sum the three numbers

        Console.WriteLine("The sum of your three numbers is: " +isum);

    }

}