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

class Sequence
{
	public static void Main()
	{
		int NumberToPrint;

		for (int i = 2; i <=17; i++)
		{
			if (i % 2 == 0)
			{
				NumberToPrint = i;
			}
			else
			{
				NumberToPrint = i * (-1);
			}
		}
	}
}