﻿/*
 * Problem 9. Print a Sequence
Write a program that prints the first 10 members of the sequence: 2, -3, 4, -5, 6, -7, ...
 */


using System;

class NumbersOfSequence
{
    static void Main()
    {
        for (int i = 2; i <= 11; i++)
        {
            if (i % 2 == 0)
            {
                Console.WriteLine("{0},", i);
            }
            else
            {
                Console.WriteLine("{0},", -i);
            }

        }
    }
}