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

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

            List<string> command = Console.ReadLine().Split(" ").ToList();

            while (command[0] != "Yohoho!")
            {
                if (command[0] == "Loot")
                {
                    for (int i = 1; i < command.Count; i++)
                    {
                        if (!treasure.Contains(command[i]))
                        {
                            treasure.Insert(0, command[i]);
                        }
                    }
                }
                else if (command[0] == "Drop")
                {
                    if (int.Parse(command[1]) < treasure.Count && int.Parse(command[1]) >= 0)
                    {
                        string element = treasure[int.Parse(command[1])];
                        treasure.RemoveAt(int.Parse(command[1]));
                        treasure.Add(element);

                    }
                }
                else if (command[0] == "Steal")
                {
                    int count = int.Parse(command[1]);

                    if (count >= treasure.Count)
                    {
                        Console.WriteLine(String.Join(", ", treasure));
                        treasure.Clear();
                        Console.WriteLine("Failed treasure hunt.");
                        return;
                    }
                    else
                    {
                        Console.WriteLine(String.Join(", ", treasure.GetRange(treasure.Count - count, count)));
                        treasure.RemoveRange(treasure.Count - count, count);
                    }
                }

                command = Console.ReadLine().Split().ToList();
            }

            double countElements = 0;

            for (int i = 0; i < treasure.Count; i++)
            {
                countElements += treasure[i].Length;
            }

            double averageGain = countElements / treasure.Count;
            Console.WriteLine($"Average treasure gain: {averageGain:f2} pirate credits.");


        }
    }
}