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

namespace _08.Mentor_Group
{
    class Program
    {
        static void Main(string[] args)
        {
            string input = Console.ReadLine();
            SortedDictionary<string, List<DateTime>> mentorDates = new SortedDictionary<string, List<DateTime>>();
            Dictionary<string, List<string>> mentorComments = new Dictionary<string, List<string>>();
            List<string> inputData = new List<string>();
            string username = string.Empty;

            while (input != "end of dates")
            {
                inputData = input.Split(' ', ',').ToList();
                username = inputData[0];
                if (!mentorDates.ContainsKey(username))
                {
                    mentorDates[username] = new List<DateTime>();
                }
                inputData.RemoveAt(0);
                for (int i = 0; i < inputData.Count; i++)
                {
                    mentorDates[username].Add(DateTime.ParseExact(inputData[i], "dd/MM/yyyy", CultureInfo.InvariantCulture));
                }

                input = Console.ReadLine();
            }

            input = Console.ReadLine();

            while (input != "end of comments")
            {
                inputData = input.Split('-').ToList();
                username = inputData[0];

                if (!mentorDates.ContainsKey(username))
                {
                    input = Console.ReadLine();
                    continue;
                }
                if (!mentorComments.ContainsKey(username))
                {
                    mentorComments[username] = new List<string>();
                }
                mentorComments[username].Add(inputData[1]);

                input = Console.ReadLine();
            }
            foreach (var item in mentorDates)
            {
                if (item.Value.Count != 0)
                {
                    Console.WriteLine(item.Key);
                    Console.WriteLine("Comments:");

                    if (mentorComments.ContainsKey(item.Key))
                    {
                        foreach (var comment in mentorComments[item.Key])
                        {
                            Console.WriteLine($"- {comment}");
                        }
                    }
                }
                else
                {
                    continue;
                }

                Console.WriteLine("Dates attended:");
                foreach (var date in mentorDates[item.Key].OrderBy(x => x))
                {
                    string dateString = date.ToString("dd/MM/yyyy");
                    Console.WriteLine($"-- {dateString}");
                }
            }
        }
    }
}