02_TreasureHunt

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

namespace _02_TreasureHunt
{
    class Program
    {
        static void Main(string[] args)
        {
            List<string> initialLoot = Console.ReadLine()
                .Split("|")
                .ToList();

            List<string> stealedLoot = new List<string>();

            while (true)
            {
                var commandType = Console.ReadLine();

                string[] tokens = commandType.Split();

                if (commandType == "Yohoho!")
                {
                    break;
                }
                else
                {
                    switch (tokens[0])
                    {
                        case "Loot":
                            for (int i = 1; i < tokens.Length; i++)
                            {
                                var wordToAdd = tokens[i];

                                if (initialLoot.Contains(wordToAdd))
                                {

                                }
                                else
                                {
                                    initialLoot.Insert(0, wordToAdd);
                                }
                            }
                            break;

                        case "Drop":
                            var removeAt = int.Parse(tokens[1]);

                            if (removeAt < 0)
                            {

                            }
                            else
                            {
                              var wordToAddInTheList = initialLoot[removeAt];

                              initialLoot.Add(wordToAddInTheList);

                              initialLoot.RemoveAt(removeAt);
                            }
                            break;

                        case "Steal":

                            var numOfWordsToSteal = int.Parse(tokens[1]);

                            var numOfCounts = initialLoot.Count - numOfWordsToSteal;

                            for (int i = initialLoot.Count-1; i >= numOfCounts; i--)
                            {
                                stealedLoot.Insert(0, initialLoot[i]);

                                initialLoot.Remove(initialLoot[i]);
                            }
                            break;
                    }
                }
            }

            var itemsGain = 0;

            var itemsInInitialLoot = initialLoot.Count;

            foreach (var item in initialLoot)
            {
                for (int i = 0; i < item.Length; i++)
                {
                    itemsGain++;
                }
            }

            var averageGain = (double)itemsGain / (double)itemsInInitialLoot;

            Console.WriteLine(string.Join(", ", stealedLoot));
            if (itemsInInitialLoot > 0)
            {
                Console.WriteLine($"Average treasure gain: {averageGain:f2} pirate credits.");
            }
            else
            {
                Console.WriteLine($"Failed treasure hunt.");
            }

        }
    }
}