Be Positive

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

namespace ExamPreparation
{
    class Startup
    {
        static void Main()
        {
            int countSequences = int.Parse(Console.ReadLine());

            for (int i = 0; i < countSequences; i++)
            {
                int[] numbers = Console.ReadLine()
                    .Trim()
                    .Split(new[] { ' ', '\t' }, StringSplitOptions.RemoveEmptyEntries)
                    .Select(int.Parse)
                    .ToArray();
                List<int> found = new List<int>();

                for (int j = 0; j < numbers.Length; j++)
                {
                    int currentNum = numbers[j];

                    if (currentNum >= 0)
                    {
                        found.Add(currentNum);
                    }
                    else
                    {
                        if (j + 1 < numbers.Length)
                        {
                            currentNum += numbers[j + 1];
                        }

                        if (currentNum >= 0)
                        {
                            found.Add(currentNum);
                        }

                        j++;
                    }
                }

                if (found.Any())
                {
                    Console.WriteLine(string.Join(" ", found));
                }
                else
                {
                    Console.WriteLine("(empty)");
                }
            }
        }
    }
}