using System;
using System.Collections.Generic;
using System.Linq;
namespace Treasure_Hunt
{
    class Program
    {
        static void Main(string[] args)
        {

            List<string> treasureLIst = Console.ReadLine()
                .Split('|', StringSplitOptions.RemoveEmptyEntries)
                .ToList();
            while (true)
            {
                string[] commands = Console.ReadLine()
                       .Split()
                       .ToArray();
                if (commands[0] == "Yohoho!")
                { break; }
                switch (commands[0])
                {
                    case "Loot":

                        treasureLIst = GetLootedList(treasureLIst, commands);
                        break;
                    case "Drop":

                        int index = int.Parse(commands[1]);
                        if (index < 0 || index > treasureLIst.Count - 1)
                        { continue; }
                        else
                        {
                            string current = treasureLIst[index];
                            treasureLIst.RemoveAt(index);
                            treasureLIst.Add(current);
                        }
                        break;
                    case "Steal":
                        int count = int.Parse(commands[1]);
                        if (count <= 0)
                        { continue; }
                        GetStealList(treasureLIst, count);
                        break;

                }


            }
            double sumofletters = 0;
            for (int i = 0; i < treasureLIst.Count; i++)
            {
                int cur = treasureLIst[i].Length;
                sumofletters += cur;


            }



            if (treasureLIst.Count > 0)
            {
                double needForPrint = sumofletters / (treasureLIst.Count);
                Console.WriteLine($"Average treasure gain: {needForPrint:f2} pirate credits.");
            }
            else
            { Console.WriteLine("Failed treasure hunt."); }


        }

        static List<string> GetStealList(List<string> treasureLIst, int count)
        {
            List<string> stealitems = new List<string>();
            for (int i = 1; i <= count; i++)
            {
                string current = treasureLIst[treasureLIst.Count - 1];
                stealitems.Add(current);
                treasureLIst.RemoveAt(treasureLIst.Count - 1);

            }
            stealitems.Reverse();
            Console.WriteLine(String.Join(", ", stealitems));
            return treasureLIst;
        }

        static List<string> GetLootedList(List<string> treasureLIst, string[] commands)
        {
            List<string> newitems = new List<string>();
            List<string> newTresure = new List<string>();

            for (int i = 1; i < commands.Length; i++)
            {
                newitems.Add(commands[i]);
                if (treasureLIst.Contains(commands[i]))
                {
                    newitems.Remove(commands[i]);
                }
            }
            newitems.Reverse();
            for (int j = 0; j < newitems.Count; j++)
            {
                newTresure.Add(newitems[j]);

            }
            for (int k = 0; k < treasureLIst.Count; k++)
            {
                newTresure.Add(treasureLIst[k]);

            }
            treasureLIst = newTresure;
            return treasureLIst;
        }
    }
}