using System;
using System.Collections;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

class StudentGroups
{
    static void Main()
    {
        var tokens = Group.ReadTownsAndStudents();

        var result = Group.DistributeStudentsIntoGroups(tokens);
        Console.WriteLine($"Created {result.Count} groups in {result.Select(a=>a.Town).Distinct().ToList().Count} towns:");

        foreach (var group in result)
        {
            Console.WriteLine($"{group.Town.Name} => {string.Join(", ", group.Students.Select(a=>a.Email).ToList())}");
        }

    }
}

public class Town
{
    public string Name { get; set; }

    public int SeatsCount { get; set; }

    public List<Student> Students { get; set; }
}

public class Student
{
    public string Name { get; set; }

    public string Email { get; set; }

    public DateTime RegistrationDate { get; set; }
}

class Group
{
    public Town Town { get; set; }
    public List<Student> Students { get; set; }

    public static List<Town> ReadTownsAndStudents()
    {
        var towns = new List<Town>();

        string inputLine = Console.ReadLine();

        while (inputLine != "End")
        {
            if (inputLine.IndexOf("=>") != -1)
            {
                Town town = new Town();
                string[] parseInput = inputLine.Trim().Split(new[] { " => " }, StringSplitOptions.RemoveEmptyEntries);

                town.Name = parseInput[0];
                town.SeatsCount = int.Parse(parseInput[1].Split(' ')[0]);
                town.Students = new List<Student>();
                towns.Add(town);
            }
            else
            {
                Student student = new Student();
                string[] parseInput = inputLine.Split(new[] {'|', ' ' }, StringSplitOptions.RemoveEmptyEntries);

                student.Name = parseInput[0] + " " + parseInput[1];
                student.Email = parseInput[2];
                if (parseInput[2].Contains("|"))
                {
                    student.Email = student.Email.Substring(1, parseInput[2].Length - 1);
                }
                if (parseInput[3].Contains("|"))
                {
                    parseInput[3] = parseInput[3].Substring(1, parseInput[3].Length - 1);
                }

                student.RegistrationDate = DateTime.ParseExact(parseInput[3], "d-MMM-yyyy", CultureInfo.InvariantCulture);
                towns[towns.Count-1].Students.Add(student);
            }

            inputLine = Console.ReadLine();
        }

        return towns;
    }

    public static List<Group> DistributeStudentsIntoGroups(List<Town> towns)
    {
        var groups = new List<Group>();

        foreach (var town in towns.OrderBy(x=>x.Name))
        {
            IEnumerable<Student> students =
                town.Students.OrderBy(x => x.RegistrationDate).ThenBy(n => n.Name).ThenBy(e => e.Email);

            while (students.Any())
            {
                var group = new Group();
                group.Town = town;
                group.Students = students.Take(group.Town.SeatsCount).ToList();
                students = students.Skip(group.Town.SeatsCount);
                groups.Add(group);
            }
        }
        return groups;
    }
}