using System;

class Program
{
    static void Main()
    {
        int n = int.Parse(Console.ReadLine());
        for (int i = 1; i <= n; i++)
        {
            Console.Write(new string(' ', n - i));
            Console.Write("*");
            for (int k = 1; k <= i - 1; k++)
            {
                Console.Write(" *");
            }
            Console.WriteLine();
        }
        for (int i = n - 1; i > 0; i--)
        {
            Console.Write(new string(' ', n - i));
            Console.Write("*");
            for (int k = 1; k <= i - 1; k++)
            {
                Console.Write(" *");
            }
            Console.WriteLine();
        }

    }
}