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

public class Student
{
    public string Name { get; set; }
    public List<DateTime> DatesAttended { get; set; }
    public List<string> Comments { get; set; }
}

public class Program
{
    public static void Main()
    {
        var namesAndDates = ReadNamesAndDates();
        var comments = ReadComments(namesAndDates.Keys.ToList());
        var allStudents = GetStudents(namesAndDates, comments);
        PrintStudents(allStudents);
    }

    public static void PrintStudents(List<Student> allStudents)
    {
        foreach (var student in allStudents.OrderBy(st => st.Name))
        {
            var studentName = student.Name;
            var dates = student.DatesAttended.OrderBy(d => d).ToList();
            var studentComments = student.Comments;
            Console.WriteLine($"{studentName}");
            var commentsCount = studentComments.Count;
            if (commentsCount > 0)
            {
                Console.WriteLine("Comments:");
                foreach (var comment in studentComments)
                {
                    Console.WriteLine($"- {comment}");
                }
            }
            else
            {
                Console.WriteLine("Comments:");
            }
            Console.WriteLine($"Dates attended:");
            if (dates.Count > 0)
            {
                foreach (var date in dates)
                {
                    var day = date.Day;
                    var month = date.Month;
                    var year = date.Year;
                    Console.WriteLine($"-- {day:d2}/{month:d2}/{year:d4}");
                }
            }
        }
    }

    public static List<Student> GetStudents(Dictionary<string, List<DateTime>> namesAndDates, Dictionary<string, List<string>> comments)
    {
        var studentsList = new List<Student>();
        foreach (var student in namesAndDates)
        {
            var name = student.Key;
            var dates = student.Value;
            var studentComments = new List<string>();
            if (comments.ContainsKey(name))
            {
                studentComments = comments[name];
            }
            var currentStudent = new Student
            {
                Name = name,
                DatesAttended = dates,
                Comments = studentComments
            };
            studentsList.Add(currentStudent);
        }
        return studentsList;
    }

    private static Dictionary<string, List<string>> ReadComments(List<string> names)
    {
        var line = Console.ReadLine();
        var namesAndComments = new Dictionary<string, List<string>>();
        while (line != "end of comments")
        {
            var tokens = line.Split('-');
            var name = tokens[0];
            var comment = tokens[1];
            if (!names.Contains(name))
            {
                line = Console.ReadLine();
                continue;
            }
            if (!namesAndComments.ContainsKey(name))
            {
                namesAndComments[name] = new List<string>();
            }
            namesAndComments[name].Add(comment);
            line = Console.ReadLine();
        }

        return namesAndComments;
    }

    public static Dictionary<string, List<DateTime>> ReadNamesAndDates()
    {
        var line = Console.ReadLine();
        var namesAndDates = new Dictionary<string, List<DateTime>>();
        while (line != "end of dates")
        {
            var tokens = line.Split(new[] { ' ', ',' });
            var name = tokens[0];
            if (tokens.Length == 1)
            {
                namesAndDates[name] = new List<DateTime>();
                line = Console.ReadLine();
                continue;
            }
            var dates = tokens.Skip(1).Select(a => DateTime.ParseExact(a, "dd/MM/yyyy", CultureInfo.InstalledUICulture)).ToList();
            if (!namesAndDates.ContainsKey(name))
            {
                namesAndDates[name] = new List<DateTime>();
            }
            namesAndDates[name].AddRange(dates);
            line = Console.ReadLine();
        }
        return namesAndDates;
    }
}