using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Въведете брой елементи");

        int n = int.Parse(Console.ReadLine());

        for(int r=1; r<=n; r++)

        {

         for(int col=1; col<=n-r; col++)

          Console.Write(" ");

         for(int col=1; col<r; col++)

          Console.Write(" *");

         Console.WriteLine();

        }

        for(int r=1; r>=n-1; r++)

        {

         for(int col=1; col<=r-n; col++)

          Console.Write(" ");

         for(int col=1; col>r; col++)

          Console.Write(" *");

         Console.WriteLine();

        }

    }

}