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

namespace _1._5._Remove_Negatives_and_Reverse
{
    class Program
    {
        static void Main()
        {
            List<int> inputNum = Console.ReadLine().Split().Select(int.Parse).ToList();

            inputNum.RemoveAll(n => n < 0);

            if (inputNum.Count == 0)
            {
                Console.WriteLine("empty");
            }
            inputNum.Reverse();

            Console.WriteLine(string.Join(" ", inputNum));
        }
    }
}