TheLift

using System;
using System.Linq;

namespace _02.TheLift.MidExam1
{
    class Program
    {
        static void Main(string[] args)
        {
            int totalPeople = int.Parse(Console.ReadLine());
            int emptySpots = 0;

            int[] liftSpots = Console.ReadLine()
                .Split(" ", StringSplitOptions.RemoveEmptyEntries)
                .Select(int.Parse)
                .ToArray();



            emptySpots = (4 * liftSpots.Length) - liftSpots.Sum();
            for (int i = 0; i < liftSpots.Length; i++)
            {
                if (liftSpots[i] == 4)
                {
                    continue;
                }
                else if (liftSpots[i] == 0)
                {
                    if (totalPeople < 4)
                    {
                        liftSpots[i] += totalPeople;
                        totalPeople -= totalPeople;
                        emptySpots -= totalPeople;
                    }
                    else
                    {
                        totalPeople -= 4;
                        liftSpots[i] = 4;
                        emptySpots -= 4;
                    }

                }

                else if (liftSpots[i] == 1)
                {
                    if (totalPeople < 3)
                    {
                        liftSpots[i] += totalPeople;
                        totalPeople -= totalPeople;
                        emptySpots -= totalPeople;
                    }
                    else
                    {
                        totalPeople -= 3;
                        liftSpots[i] = 4;
                        emptySpots -= 3;
                    }
                }

                else if (liftSpots[i] == 2)
                {
                    if (totalPeople < 2)
                    {
                        liftSpots[i] += totalPeople;
                        totalPeople -= totalPeople;
                        emptySpots -= totalPeople;
                    }
                    else
                    {
                        totalPeople -= 2;
                        liftSpots[i] = 4;
                        emptySpots -= 2;
                    }
                }

                else if (liftSpots[i] == 3)
                {
                    if (totalPeople < 1)
                    {
                        liftSpots[i] += totalPeople;
                        totalPeople -= totalPeople;
                        emptySpots -= totalPeople;
                    }
                    else
                    {
                        totalPeople -= 3;
                        liftSpots[i] = 4;
                        emptySpots -= 3;
                    }
                }

            }

            if (totalPeople <= 0 && emptySpots > 0)
            {
                Console.WriteLine($"The lift has empty spots!\n" +
                    $"{String.Join(" ", liftSpots)}");
            }
            else if (totalPeople > 0 && emptySpots == 0)
            {
                Console.WriteLine($"There isn't enough space! {totalPeople} people in a queue!\n" +
                    $"{String.Join(" ", liftSpots)}");
            }
            else
            {
                Console.WriteLine(String.Join(" ", liftSpots));
            }
        }
    }
}