using System;

public class ChristmasTree

{

    public static void Main()

    {

        int spaces = 15;

        int asterix = 1;

        for (int i = 0; i < 15; i++)

        {

            for (int j = 0; j < spaces; j++)

            {

                Console.Write(" ");   

            }

            for (int j = 0; j < asterix; j++)

            {

                Console.Write("* ");

            }

            Console.WriteLine();

            asterix++;

            spaces--;

        }

    }

}