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

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

            string input = null;

            while ((input = Console.ReadLine()) != "Report")

            {
                string[] command = input.Split().ToArray();
                string action = command[0];

                switch (action)
                {
                    case "Blacklist":
                        friends = Blacklist(friends, command).ToList();
                        //  Console.WriteLine(String.Join(" ",friends));
                        break;
                    case "Error":
                        friends = Error(friends, command);
                        // Console.WriteLine(String.Join(" ", friends));
                        break;

                    case "Change":
                        friends = Change(friends, command);
                        // Console.WriteLine(String.Join(" ", friends));
                        break;
                }

            }
            int countBlacklist = 0;
            int countLost = 0;


            foreach (string friend in friends)
            {
                if (friend == "Blacklisted")
                {
                    countBlacklist++;
                }

                else if (friend == "Lost")
                {
                    countLost++;
                }
            }

            Console.WriteLine($"Blacklisted names: {countBlacklist}");
            Console.WriteLine($"Lost names: {countLost}");
            Console.WriteLine(String.Join(" ", friends));
        }

        public static List<string> Blacklist(List<string> friends, string[] command)
        {
            string name = command[1];

            if (friends.Contains(name))
            {
                int indexBlacklist = friends.IndexOf(name);
                friends[indexBlacklist] = "Blacklisted";

                Console.WriteLine($"{name} was blacklisted.");
            }

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

            return friends;
        }
        public static List<string> Error(List<string> friends, string[] command)

        {
            int indexError = int.Parse(command[1]);

            if (indexError>=0&& indexError<friends.Count)
            {
                string nameError = friends.ElementAt(indexError);
                if (nameError != "Blacklisted" && nameError != "Lost")
                {

                    Console.WriteLine($"{nameError} was lost due to an error.");
                    friends[indexError] = "Lost";
                }
            }
            return friends;
        }

        public static List<string> Change(List<string> friends, string[] command)
        {
            int indexChange = int.Parse(command[1]);
            string newnameChange = command[2];

            if (indexChange >= 0 && indexChange < friends.Count)
            {
                string currentName = friends.ElementAt(indexChange);
                Console.WriteLine($"{currentName} changed his username to {newnameChange}.");
                friends[indexChange] = newnameChange;
            }
            return friends;
        }
    }
}