Star

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

namespace Star
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            string asterisk = "*";
            string dotRoof = new string('.', n);

            Console.WriteLine(dotRoof + asterisk + dotRoof);

            for(int i = 0; i < n / 2 - 1; i++)
            {
                string dotOutUp = new string('.', n - i - 1);
                string dotInDown = new string('.', 2 * i + 1);
                Console.WriteLine(dotOutUp + asterisk + dotInDown + asterisk + dotOutUp);
            }

            string asteriskMiddle = new string('*', n / 2 + 1);
            string dotMiddle = new string('.', n - 1);
            Console.WriteLine(asteriskMiddle + dotMiddle + asteriskMiddle);

            for(int i = 0; i < n / 2 - 1; i++)
            {
                string dotOutMiddle = new string('.', i + 1);
                string dotInMiddle = new string('.', 2 * n - 3 - 2 * i);
                Console.WriteLine(dotOutMiddle + asterisk + dotInMiddle + asterisk + dotOutMiddle);
            }

            string dotOutside = new string('.', n / 2);
            string dotInside = new string('.', n / 2 - 1);
            Console.WriteLine(dotOutside + asterisk + dotInside + asterisk + dotInside + asterisk + dotOutside);
            for(int i = 0; i < n / 2 - 1; i++)
            {
                string dotFirstOut = new string('.', n / 2 - 1 - i);
                string dotInMiddle = new string('.', 2 * i + 1);
                Console.WriteLine(dotFirstOut + asterisk + dotInside + asterisk + dotInMiddle + asterisk + dotInside + asterisk + dotFirstOut);

            }

            string asteriskDown = new string('*', (n + 2) / 2);
            string dotDown = new string('.', n - 1);
            Console.WriteLine(asteriskDown + dotDown + asteriskDown);
        }
    }
}