AppendList

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

namespace AppendList
{
    class AppendList
    {
        static void Main()
        {
            List<string> items = Console.ReadLine().Split('|').ToList();
            items.Reverse();
            List<string> result = new List<string>();
            foreach(string item in items)
            {
                List<string> nums = item.Split(new char[] { ' ' },StringSplitOptions.RemoveEmptyEntries).ToList();
                result.AddRange(nums);
            }
            Console.WriteLine(string.Join(" ",result));
        }
    }
}