using System;

public class Program

{

    public static void Main()

    {

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

        for(int y = 1; y <= a; y++)

        {

            for(int x = 1; x <= a - y; x++)

            {

                Console.Write(" ");

            }

            for(int x = 1; x <= y; x++)

            {

                Console.Write("*");

            }

            for(int x = 1; x <= y - 1; x++)

            {

                Console.Write("*");

            }

            Console.WriteLine();

        }

    }

}