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

namespace Inbox_Manager
{
    class Program
    {
        static void Main(string[] args)
        {
            var userName= new Dictionary<string, List<String>>();
            var usermsg= new Dictionary<string, List<String>>();

            int userCount = 0;
            string[] comand = Console.ReadLine().Split("->").ToArray();
            while (comand[0] != "Statistics")
            {
                if (comand[0]=="Add")
                {
                    string name=comand[1];
                    if (userName.ContainsKey(name))
                    {
                        Console.WriteLine($"{name} is already registered");//ako go ima
                    }
                    else if (!userName.ContainsKey(name))///ako ne sadarja KEY
                    {
                        userName[name] = new List<string>();//syzdavame KEY

                        userCount += 1;//BROIM KEY

                    }
                    userName[name].Add(name);

                }
                else if (comand[0] == "Send")
                {
                    string name = comand[1];
                    string email = comand[2];
                    if (userName.ContainsKey(name))
                    {
                        if (!usermsg.ContainsKey(name))
                        {
                            usermsg[name] = new List<string>();

                        }
                        usermsg[name].Add(email);

                    }

                }
                else if (comand[0] == "Delete")
                {
                    string name = comand[1];
                    if (userName.ContainsKey(name))//ako sydarja key
                    {
                        userName.Remove(name);//triene na KEY
                        usermsg.Remove(name);
                        userCount--;//namalqme broq4a
                    }
                    else
                    {
                        Console.WriteLine($"{name} not found!");
                    }

                }
                comand = Console.ReadLine().Split("->").ToArray();
            }

                Console.WriteLine($"Users count: {userCount}");//userName.Keys.Count
                //Console.WriteLine($"Users count: {userName.Keys.Count}");

           usermsg = usermsg.OrderByDescending(x => x.Value.Count).ThenBy(x => x.Key).ToDictionary(x => x.Key, x => x.Value);
            foreach (var item in usermsg)
            {
                Console.WriteLine($"{item.Key}");
                Console.WriteLine($" - {string.Join(Environment.NewLine + " - ",item.Value)}");
            }
        }
    }
}