ChristmassTree

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Christmas_Tree
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            Console.Write(new string(' ', n));
            Console.WriteLine(" |");

            /* for (int i = 1; i <= n; i++)
             {
                 Console.Write(new string(' ', n-i));
                 Console.Write(new string('*', i));
                 Console.Write(" ");
                 Console.Write("|");
                 Console.Write(" ");
                 Console.WriteLine(new string('*', i));
             }
             */

            //можем да опишем структурата с place holder:

            for (int i = 1; i <= n; i++)
            {
                Console.WriteLine("{0}{1} | {1}", new string(' ', n - i), new string('*', i));
            }
        }
    }
}