DrawHouse

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

namespace DrawHouse
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            Console.Write(new string('.', n / 2));
            Console.Write(new string('*', 1));
            Console.WriteLine(new string('.', n / 2));

            int middlePoints = 1;
            int outerPoints = n / 2;
            char asterisks = '*';
            for (int i = 0; i < n; i++)
            {
                outerPoints--;
                string outerPointsString = new string('.', outerPoints);
                string middlePointsString = new string('.', middlePoints);

         Console.WriteLine(outerPointsString + asterisks + middlePointsString + asterisks + outerPointsString);
                middlePoints += 2;
            }
        }
    }
}