using System;

public class Program
{
	public static void Main()
	{

		int n = int.Parse(Console.ReadLine());
		int numAsteriskAndDashes = n-2;

		int numberAsteriskPlusLine = n-1;



		for (int row =1; row<= n-2; row++)
		{
			if (row%2==1)
			{
				Console.WriteLine("{0}\\ /{0}",new string('*',numAsteriskAndDashes ));
			}
			else
				Console.WriteLine("{0}\\ /{0}",new string('-',numAsteriskAndDashes ));
		}


		Console.WriteLine(new string(' ', numberAsteriskPlusLine) + '@' +new string(' ', numberAsteriskPlusLine) );

		for (int row =1; row<= n-2; row++)
		{
			if (row%2==1)
			{
				Console.WriteLine("{0}/ \\{0}",new string('*',numAsteriskAndDashes ));
			}
			else
				Console.WriteLine("{0}/ \\{0}",new string('-',numAsteriskAndDashes ));
		}
	}
}