Rhombus

using System;

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

            for (var row = 1; row <= n; row++)
            {
                Console.Write("{0}*", new string(' ', n - row));

                for (int col = 1; col < row; col++)
                {
                    Console.Write(" *");
                }

                Console.WriteLine();
            }

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

                for (int col = 1; col < row; col++)
                {
                    Console.Write(" *");
                }

                Console.WriteLine();
            }



        }
    }
}