using System;

namespace Basics
{
    internal class Program
    {
        private static void Main(string[] args)
        {
            int[] numbers = new int[10];
            for (int i = 0; i < 10; i++)
            {
                if (i%2==0)
                {
                    numbers[i] = i + 2;
                }
                else
                {
                    numbers[i] = -(i + 2);
                }
            }
            string result = string.Join(",", numbers);
            Console.WriteLine(result);
        }
    }
}