2016_July_17_2016 Diamond

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

namespace Diamond
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());


            Console.WriteLine("{0}{1}{0}", new string('.', n), new string('*',3*n));

            for (int j = 0 ; j <= n-2; j++)
            {
                Console.WriteLine("{0}{1}{2}{1}{0}", new string('.', (n - j)-1), new string('*',1), new string('.', (3*n+2*j)));
            }

            Console.WriteLine("{0}", new string('*', 5 * n));

            for (int i = 0; i < (2*n); i++)

            {
                    var b = ((5*n-2*i)-4);

                Console.WriteLine("{0}{1}{2}{1}{0}", new string('.', (n + i) - (n-1)), new string('*', 1), new string('.', b));

            }

            Console.WriteLine("{0}{1}{0}", new string('.', 2*n+1), new string('*', n-2));

        }
    }
}