draw star

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

namespace novo2
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            int innerPoints;
            int outerPoints;
            for (int i = 0; i < (n / 2); i++)
            {
                string outerDots = new string('.', n - i);
                if (i == 0)
                {
                    Console.WriteLine(outerDots + "*" + outerDots);
                }
                else
                {
                    string innerDots = new string('.', 2 * i - 1);
                    Console.WriteLine(outerDots + "*" + innerDots + "*" + outerDots);
                }
            }
            for (int j = 0; j < n / 2; j++)
            {
                string innerDotsFirstLine = new string('.', n - 1);
                string stars = new string('*', (n + 2) / 2);
                string outerDots = new string('.', j);

                if (j == 0)
                {
                    Console.WriteLine(stars + innerDotsFirstLine + stars);
                }
                else
                {
                    string innerDots = new string('.', 2 * n + 1 - 2 - 2 * j);
                    Console.WriteLine(outerDots + "*" + innerDots + "*" +  outerDots);
                }

            }
            for (int h = 0; h < n / 2 + 1; h++)
            {
                string outerDotsFirstLine = new string('.', n / 2);
                string innerDots = new string('.', n / 2 - 1);
                 if (h == 0)
                {
                    Console.WriteLine(outerDotsFirstLine + "*" + innerDots + "*" + innerDots + "*" + outerDotsFirstLine);
                }
                if (h == n / 2)
                {
                   string starsLastLine = new string('*', n / 2 + 1);
                 string innerInnerDots = new string('.', 2 * h - 1);
                    Console.WriteLine(starsLastLine + innerInnerDots + starsLastLine);
                }

                if(h != 0 && h != n / 2)
                {
                    string innerInnerDots = new string('.', Math.Abs( 2 * h - 1));
                    string outerDots = new string('.', Math.Abs ( n / 2 - h));
                    Console.WriteLine( outerDots + "*" + innerDots + "*" + innerInnerDots + "*" + innerDots +"*" + outerDots);
                }
            }
            }
        }
    }