ромб

using System;

public class Program
{
    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));
        }
    }
}