Telerik FirTree

using System;

namespace Task03FirTree
{
    class Program
    {
        static void Main(string[] args)
        {
            int height = int.Parse(Console.ReadLine());
            int star = 1;
            for (int i = height - 2; i >= 0; i--)
            {
                Console.WriteLine(string.Format("{0}{1}{0}", new string('.', i), new string('*', star)));
                star += 2;
            }

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