4

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

namespace ConsoleApp1
{


    class Program
    {




        static void solve(int n, int N)
        {
            int d = N - n;
            for (int i = 0; i < d/2; ++i)
                Console.Write("*");
            for (int i = 0; i < n; ++i)
                Console.Write(" ");
            for (int i = 0; i < d/2; ++i)
                Console.Write("*");

            Console.WriteLine();

            if (n > 0)
                solve(n - 2, N);


            for (int i = 0; i < d / 2; ++i)
                Console.Write("*");
            for (int i = 0; i < n; ++i)
                Console.Write(" ");
            for (int i = 0; i < d / 2; ++i)
                Console.Write("*");

            Console.WriteLine();
        }

        static void Main()
        {
            int n = int.Parse(Console.ReadLine());
            if (n % 2 != 0)
                Console.WriteLine("I cant do it ;c");
            else
            {
                Console.Clear();
                solve(n, n + 2);
            }

        }
    }
}