using System; romb ot zvezdi

public class Program
{
	public static void Main()
	{
		int n = int.Parse(Console.ReadLine());
		int numberSpaces = n-1;


		//gorna chast

		for (int row = 1; row <= n; row++)
		{
			Console.Write(new string(' ', numberSpaces));
			Console.Write('*');

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

				}
			numberSpaces-=1;
			Console.WriteLine();
		}

		//dolna chast
		int numSpaces = 1;
		for (int row = n - 1; row >= 1; row--)
		{
			Console.Write(new string(' ',numSpaces));
			Console.Write('*');
			int number = n-2;

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


			numSpaces++;
			Console.WriteLine();
		}

	}
}