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

namespace _08.RealProgram
{
    class Program
    {
        class Student
        {
            public string Name { get; set; }
            public List<DateTime> Dates { get; set; }
            public List<string> Comments { get; set; }
        }
        static void Main(string[] args)
        {
            List<Student> studentNameAndDates = ReadStudentInfo();
            List<Student> studnetNameAndComments = ReadComments(studentNameAndDates);
            PrintResult(studnetNameAndComments);
        }

        static void PrintResult(List<Student> studnetNameAndComments)
        {
            foreach (var name in studnetNameAndComments.OrderBy(a => a.Name))
            {
                Console.WriteLine($"{name.Name}");
                Console.WriteLine("Comments:");
                foreach (var comment in name.Comments)
                {
                    Console.WriteLine($"- {comment}");
                }
                Console.WriteLine("Dates attended:");
                foreach (var date in name.Dates.OrderBy(a => a))
                {
                    Console.WriteLine($"-- {date:dd/MM/yyyy}");
                }
            }
        }

        static List<Student> ReadComments(List<Student> studentNameAndDates)
        {
            while (true)
            {
                var nameAndComment = Console.ReadLine().Split('-').ToList();
                if (nameAndComment[0] == "end of comments" || nameAndComment[0] == "end of dates")
                {
                    return studentNameAndDates;
                }
                var name = nameAndComment[0];
                var comment = nameAndComment[1];
                if (studentNameAndDates.Any(a => a.Name == name))
                {
                    Student abv = studentNameAndDates.First(a => a.Name == name);
                    abv.Comments.Add(comment);
                }
            }
        }

        static List<Student> ReadStudentInfo()
        {
            List<Student> nameDate = new List<Student>();
            while (true)
            {
                var nameAndDate = Console.ReadLine().Split(' ', ',').ToList();
                if (nameAndDate[0] == "end")
                {
                    return nameDate;
                }
                var date = nameAndDate.Skip(1).ToList();
                var name = nameAndDate[0];
                var info = new Student();
                info.Dates = new List<DateTime>() ;
                if (nameDate.Any(a => a.Name == name))
                {
                    for (int i = 0; i < date.Count; i++)
                    {
                        info.Dates.Add(DateTime.ParseExact(date[i], "dd/MM/yyyy", CultureInfo.InvariantCulture));

                    }

                }
                else
                {
                    info.Name = name;
                    for (int i = 0; i < date.Count; i++)
                    {
                        info.Dates.Add(DateTime.ParseExact(date[i], "dd/MM/yyyy", CultureInfo.InvariantCulture));
                    }

                    info.Comments = new List<string>();
                    nameDate.Add(info);
                }
            }
        }
    }
}