Fir Tree

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace FirTree
{
    class FirTree
    {
        static void Main(string[] args)
        {
            byte height = byte.Parse(Console.ReadLine());
            char dot = '.';
            char star = '*';
            int points = (height*2) - 2;
            int starsCount = 1;
            int dotsCount = points - starsCount;
            for (int i = 1; i < height; i++)
            {
                for (int j = 0; j < dotsCount/2; j++)
                {
                    Console.Write("{0}", dot);
                }
                for (int j = 0; j < starsCount; j++)
                {
                    Console.Write("{0}", star);
                }
                for (int j = 0; j < dotsCount/2; j++)
                {
                    Console.Write("{0}", dot);
                }
                starsCount += 2;
                dotsCount = points - starsCount;
                Console.WriteLine();
            }
            starsCount = 1;
            dotsCount = points - starsCount;
            for (int j = 0; j < dotsCount / 2; j++)
            {
                Console.Write("{0}", dot);
            }
            for (int j = 0; j < starsCount; j++)
            {
                Console.Write("{0}", star);
            }
            for (int j = 0; j < dotsCount / 2; j++)
            {
                Console.Write("{0}", dot);
            }
            Console.WriteLine();
        }
    }
}