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

namespace ExamPreparation
{
    public class Town
    {
        public Town(string name, int seats)
        {
            this.Name = name;
            this.Seats = seats;
            this.Students = new List<Student>();
        }

        public string Name { get; private set; }

        public int Seats { get; private set; }

        public int GroupsCount
        {
            get
            {
                int groups = 1;
                if (this.Students.Count > this.Seats)
                {
                    if (this.Students.Count % this.Seats == 0)
                    {
                        groups = this.Students.Count / this.Seats;
                    }
                    else
                    {
                        groups = this.Students.Count / this.Seats + this.Students.Count % this.Seats;
                    }
                }

                return groups;
            }
        }

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

        public override string ToString()
        {
            StringBuilder output = new StringBuilder();
            List<Student> ordered = this.Students.OrderBy(s => s.RegisterDate)
                .ThenBy(s => s.Name)
                .ThenBy(s => s.Email)
                .ToList();

            while (ordered.Any())
            {
                IEnumerable<Student> currentGroup = ordered.Take(this.Seats);
                output.AppendLine($"{this.Name} => {string.Join(", ", currentGroup)}");

                if (this.Seats > ordered.Count)
                {
                    ordered.Clear();
                }
                else
                {
                    ordered.RemoveRange(0, this.Seats);
                }
            }

            return output.ToString().Trim();
        }
    }

    public class Student
    {
        public Student(string name, string email, DateTime registerDate)
        {
            this.Name = name;
            this.Email = email;
            this.RegisterDate = registerDate;
        }

        public string Name { get; private set; }

        public string Email { get; private set; }

        public DateTime RegisterDate { get; private set; }

        public override string ToString()
        {
            return this.Email;
        }
    }

    public sealed class Startup
    {
        public static void Main()
        {
            string input = Console.ReadLine();
            List<Town> towns = new List<Town>();

            while (input != "End")
            {
                if (input.Contains("=>"))
                {
                    string[] tokens = input.Split(new[] { '=', '>' }, StringSplitOptions.RemoveEmptyEntries);
                    string townName = tokens[0].Trim();
                    string[] seatTokens = tokens[1].Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
                    int seatsCount = int.Parse(seatTokens[0]);

                    Town currentTown = new Town(townName, seatsCount);
                    towns.Add(currentTown);
                }
                else
                {
                    string[] studentTokens = input.Split(new[] { '|' }, StringSplitOptions.RemoveEmptyEntries);
                    string studentName = studentTokens[0];
                    string email = studentTokens[1].Trim();
                    DateTime registerDate = DateTime.ParseExact(studentTokens[2].Trim(), "d-MMM-yyyy", CultureInfo.InvariantCulture);

                    Student student = new Student(studentName, email, registerDate);
                    towns[towns.Count - 1].Students.Add(student);
                }

                input = Console.ReadLine();
            }

            Console.WriteLine($"Created {towns.Sum(t => t.GroupsCount)} groups in {towns.Count} towns:");
            foreach (var town in towns.OrderBy(t => t.Name))
            {
                Console.WriteLine(town);
            }
        }
    }
}