Tree

using System;
using System.Text.RegularExpressions;


namespace valeri
{
    class MainClass
    {


        public static void Main (string[] args)
        {
            int width = int.Parse(Console.ReadLine()); /// input = 5;

            for(int i = 0; i < (width -1) ; i++) ////// loopa she mine 4 puti za elha s viso4ina 5, zashtoto stulba she e otdelno
            {
                Console.WriteLine("{0}{1}{2}",
                    new String('.', (width - 2) - i),
                    new string('*', 1 + (i*2)),
                    new String('.', (width - 2) - i));
            }

            Console.WriteLine("{0}*{0}", new string('.', width - 2));


        }
    }
}