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

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

        public List<string> Comment { get; set; }

        public List<DateTime> Attendancy { get; set; }
    }
    class MentorGroup
    {
        static void Main(string[] args)
        {
            var attendanceNameDate = new SortedDictionary<string, List<DateTime>>();

            string commandline = Console.ReadLine();
            while (!commandline.Equals("end of dates"))
            {
                string[] commandArgs = commandline.Split(' ', ',');
                string name = commandArgs[0];


                List<DateTime> dates = new List<DateTime>();
                if (commandArgs.Length > 1)
                {

                    for (int i = 1; i < commandArgs.Length; i++)
                    {
                        DateTime currDate = DateTime.ParseExact(commandArgs[i], "dd/MM/yyyy", CultureInfo.InvariantCulture);
                        dates.Add(currDate);
                    }
                }
                else { }

                var listOfDates = new List<string>();
                for (int i = 1; i < commandArgs.Length; i++)
                {
                    listOfDates.Add(commandArgs[i]);
                }
                if (!attendanceNameDate.ContainsKey(name))
                {
                    attendanceNameDate.Add(name, new List<DateTime>());
                }

                attendanceNameDate[name].AddRange(dates);

                commandline = Console.ReadLine();
            }

            SortedDictionary<string, List<string>> comments = new SortedDictionary<string, List<string>>();

            string line = Console.ReadLine();
            while (!line.Equals("end of comments"))
            {
                string[] lineArgs = line.Split('-');
                string nameComment = lineArgs[0];
                List<string> comment = new List<string>();

                for (int i = 1; i < lineArgs.Length; i++)
                {
                    comment.Add(lineArgs[i]);
                }

                //Check's if line is accurate. If not skip the line.
                if (!attendanceNameDate.ContainsKey(nameComment))
                {
                    line = Console.ReadLine();
                    continue;
                }

                //Add name, comment to dictionary comments.
                if (!comments.ContainsKey(nameComment))
                {
                    comments.Add(nameComment, new List<string>());
                }
                comments[nameComment].AddRange(comment);


                line = Console.ReadLine();
            }

            //List to keep all students name,date and comments.
            List<Student> students = new List<Student>();

            foreach (var person in attendanceNameDate)
            {
                if (comments.ContainsKey(person.Key))
                {
                    Student currentStudent = new Student();
                    currentStudent.Name = person.Key;
                    currentStudent.Attendancy = new List<DateTime>();
                    currentStudent.Attendancy.AddRange(person.Value);
                    currentStudent.Comment = new List<string>();

                    var newList = new List<string>();
                    foreach (var item in comments[person.Key])
                    {
                        newList.Add(item);
                    }

                    currentStudent.Comment = newList;

                    students.Add(currentStudent);
                }
                else
                {
                    //return the first element from customers name list that is equal to customerName.
                    Student currentStudent = new Student();
                    currentStudent.Name = person.Key;
                    currentStudent.Attendancy = person.Value;
                    currentStudent.Comment = null;
                    students.Add(currentStudent);
                }
            }

            foreach (var student in students.OrderBy(c => c.Name))
            {
                Console.WriteLine($"{student.Name}");

                Console.WriteLine("Comments:");
                if (student.Comment == null)
                {

                }
                else
                {
                    foreach (var comment in student.Comment)
                    {
                        if (comment == null) break;
                        Console.WriteLine("- {0}", comment);
                    }
                }

                Console.WriteLine("Dates attended:");
                foreach (var attend in student.Attendancy.OrderBy(x => x.Date))
                {
                    Console.WriteLine("-- {0}", attend.ToString("dd/MM/yyyy"));
                }

            }

        }
    }
}