{
	public static void Main()
	{
		int n = int.Parse(Console.ReadLine());
		for(int i = 0; i < n / 2; i++)
		{
			Console.Write(new String('.', n / 2 - 1 - i));
			Console.Write("/");
			Console.Write(new String(' ', 2*i));
			Console.Write("\\");
			Console.WriteLine(new String('.', n / 2 - 1 - i));
		}
		for (int i = n / 2 - 1; i > 0; i--)
		{
			Console.Write(new String('.', n / 2 - 1 - i));
			Console.Write("\\");
			Console.Write(new String(' ', 2*i));
			Console.Write("/");
			Console.WriteLine(new String('.', n / 2 - 1 - i));
		}

	}
}