var length = Convert.ToInt32(Console.ReadLine());
            var maxSpaces = (length * 2) - 1;
            var width = maxSpaces;
            int star = 1;
            for (int i = 0; i < length; i++)
            {
                for (int j = 0; j < width; j++)
                {
                    if (j < maxSpaces / 2 || j >= (maxSpaces / 2 + star))
                        Console.Write(' ');
                    else
                        Console.Write('*');
                }
                Console.WriteLine();
                star += 2;
                maxSpaces -= 2;
            }