/******************************************************/
/* Introduction to Programming                        */
/* By Dr. ANTF                                        */
/* www.antf.net                                       */
/* Copyright 2015                                     */
/*                                                    */
/* C# 333 - Test 1: Problem 3                         */
/******************************************************/

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

namespace DOS
{
    class Program
    {
        static void Main(string[] args)
        {
            for (int i = 20; i > 10; i--)
            {
                if (i % 2 == 0) Console.Write("{0}, ", 60 - i);
                else Console.Write("{0}, ", i / 2 * -1);
            }
            Console.ReadKey();
        }
    }
}