namespace Rhombus_of_stars
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());

            for (int row = 0; row < n; row++)
            {

                Console.Write(new string(' ', n - row));
                for (int col = 0; col <= row; col++)
                {
                    Console.Write('*');
                    Console.Write(' ');

                }
                Console.WriteLine();
            }
            for (int row = n - 1; row > 0; row--)
            {
                Console.Write(new string(' ', n - row));
                for (int col = 0; col < row; col++)
                {
                    Console.Write('*');
                    Console.Write(' ');
                }
                Console.WriteLine();
            }
        }
    }