AppendArrays

using System;
using System.Linq;
using System.Collections.Generic;

namespace _08AnonymousThreat
{
    class Program
    {
        static void Main(string[] args)
        {
            var stringList = Console.ReadLine()
                .Split('|', StringSplitOptions.RemoveEmptyEntries)
                .Reverse()
                .ToList();

            var finalList = new List<int>();

            foreach (var number in stringList)
            {
                finalList.AddRange(number.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries)
                    .Select(int.Parse)
                    .ToList()
                    );
            }

            Console.Write(string.Join(" ", finalList));
        }
    }
}