using System;

public class Program

{

    public static void Main()

    {

        int n,i,j,k;

        n=Convert.ToInt32(Console.ReadLine());

        for(i=0;i<n;i++)

        {

            for(k=1;k<=(n*2-(i+1)*2)/2;k++)

            {

              Console.Write(" ");

            }

                 for(j=0;j<=i;j++)

                {

                   Console.Write("*");

                     Console.Write(" ");

                }

         Console.WriteLine("");

        }

    }

}