using System;
using System.Linq;

namespace _02._Friendlist_Maintenance
{
    class Program
    {
        static void Main(string[] args)
        {
            var list = Console.ReadLine().Split(", ").ToList();
            int blacklistedNamesCount = 0;
            int lostNamesCount = 0;
            while (true)
            {
                string input = Console.ReadLine();

                if (input == "Report")
                {
                    break;
                }

                var tokens = input.Split();
                string command = tokens[0];

                switch (command)
                {
                    case "Blacklist":
                        string name = tokens[1];

                        if (list.Contains(name))
                        {
                            blacklistedNamesCount++;
                            Console.WriteLine($"{name} was blacklisted.");
                            list[list.IndexOf(name)] = "Blacklisted";

                        }
                        else
                        {
                            Console.WriteLine($"{name} was not found.");
                        }

                        break;

                    case "Error":
                        int index = int.Parse(tokens[1]);
                        name = list[index];
                        if (index < list.Count && index >= 0 && list[index] != "Blacklisted" && list[index] != "Lost")
                        {
                            lostNamesCount++;
                            Console.WriteLine($"{name} was lost due to an error.");
                            list[index] = "Lost";

                        }
                        break;

                    case "Change":
                        index = int.Parse(tokens[1]);
                        string currentName = list[index];
                        string newName = tokens[2];
                        if (index < list.Count && index >= 0)
                        {
                            list[index] = newName;
                            Console.WriteLine($"{currentName} changed his username to {newName}.");
                        }
                        break;

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