07. Christmas Tree

using System;

namespace ChristmasTree
{
    class Program
    {
        static void Main()
        {
            int n = int.Parse(Console.ReadLine());

            for (int i = 0; i <= n; i++)
            {
                Console.WriteLine($"{new string(' ', n - i)}{new string('*', i)} | {new string('*', i)}{new string(' ', n - i)}");
            }
        }
    }
}