using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace _29_12class
{
    class Program
    {
        static int num;
        static bool flagIsDouble;

        static void Main(string[] args)
        {
            Console.WriteLine("Please enter a number:");
            string inputFromUser;
            Console.ForegroundColor = ConsoleColor.Blue;
            inputFromUser = Console.ReadLine();
            num = Int32.Parse(inputFromUser);
            //isDouble();
            func1();

            Console.ReadLine();
        }
        static void func1()
        {
            int tmp = num;
            for (int i = tmp; i > 0; i--)
            {
                Console.WriteLine(num);
                isDouble();
                if (flagIsDouble == true)
                {
                    if (Console.ForegroundColor == ConsoleColor.Red)
                    {
                        Console.ForegroundColor = ConsoleColor.Blue;
                    }
                    else
                    {
                        Console.ForegroundColor = ConsoleColor.Red;
                    }

                }
                num--;

            }
        }
        static void isDouble()
        {
            if (num%2==0 && num!=1)
            {
                Console.WriteLine("Is double");
                flagIsDouble = true;
            }
            else
            {
                Console.WriteLine("Is not double");
                flagIsDouble = false;
            }

        }
    }
}