Tseam Account

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace Problem_3___Tseam_Account
{
    class Program
    {
        static void Main(string[] args)
        {
            List<string> games = Console.ReadLine().Split(" ").ToList();
            string comand = Console.ReadLine();


            while (comand != "Play!")
            {
                string[] arr = comand.Split(' ').ToArray();
                string comandToDo = arr[0];
                string game = arr[1];
                if (comand == "Play!")
                {
                    break;
                }
                switch (comandToDo)
                {

                    case "Install":
                        if (!games.Contains(game))
                        {
                            games.Add(game);

                        }

                        break;
                    case "Uninstall":
                        if (games.Contains(game))
                        {
                            games.Remove(game);
                        }

                        break;
                    case "Update":
                        if (games.Contains(game))
                        {
                            games.Remove(game);
                            games.Add(game);
                        }

                        break;
                    case "Expansion":
                        string[] expansionInfo = game.Split('-');
                        string expandedGame = expansionInfo[0];
                        string expansion = expansionInfo[1];
                        if (games.Any(g => g == expandedGame))
                        {
                            int indexOfGame = games.IndexOf(expandedGame);
                            games.Insert(indexOfGame + 1, $"{expandedGame}:{expansion}");
                        }
                        break;
                }
                comand = Console.ReadLine();
            }
            Console.Write(string.Join(" ", games));
        }
    }
}