Sandglass

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

namespace Draw_Figure
{
    class Draw_Figure
    {
        static void Main(string[] args)
        {
            int N = int.Parse(Console.ReadLine());
            Console.WriteLine(new string('*', N));
            int M = 1;
            for (int i = 1; i <= M; i++)
            {
                if (M <= N - i)
                {
                    Console.WriteLine("{0}{1}{0}", new string('.', i), new string('*', N - M - i));
                    M++;
                }
            }
            for (int j = M; j >= 1; j--)
            {
                if (M < N - j)
                {
                    M--;
                    Console.WriteLine("{0}{1}{0}", new string('.', j), new string('*', N - M - j + 1));
                }
            }
            Console.WriteLine(new string('*', N));
        }
    }
}