using System;

namespace _06_02Friendlist_Maintenance_Array_MidExam_Done_
{
    class Program
    {
        static void Main(string[] args)
        {
            string[] usernames = Console.ReadLine().Split(", ");

            string command = "";
            int index = 0;
            int blocklistCount = 0;
            int lostNamesCount = 0;
            string newName = "";

            while ((command = Console.ReadLine()) != "Report")
            {
                string[] arrayCommand = command.Split(" ");

                if (arrayCommand[0] == "Blacklist")
                {
                    for (int i = 0; i < usernames.Length; i++)
                    {
                        if (arrayCommand[1] == usernames[i])
                        {
                            Console.WriteLine($"{usernames[i]} was blacklisted.");
                            usernames[i] = "Blacklisted";
                            blocklistCount++;
                            break;
                        }
                        else if(i == usernames.Length - 1)
                        {
                            Console.WriteLine($"{arrayCommand[1]} was not found.");
                            break;
                        }
                    }
                }
                else if (arrayCommand[0] == "Error")
                {
                    index = int.Parse(arrayCommand[1]);

                    if (usernames[index] == "Blacklisted" || usernames[index] == "Lost")
                    {
                        continue;
                    }
                    else
                    {
                        Console.WriteLine($"{usernames[index]} was lost due to an error.");
                        usernames[index] = "Lost";
                        lostNamesCount++;
                        continue;
                    }
                }
                else if (arrayCommand[0] == "Change")
                {
                    index = int.Parse(arrayCommand[1]);
                    newName = arrayCommand[2];
                    if (index <= usernames.Length - 1)
                    {
                        Console.WriteLine($"{usernames[index]} changed his username to {newName}.");
                        usernames[index] = newName;
                        continue;
                    }
                }
            }

            Console.WriteLine($"Blacklisted names: {blocklistCount}");
            Console.WriteLine($"Lost names: {lostNamesCount}");
            Console.WriteLine(string.Join(" ", usernames));
        }
    }
}