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

namespace Mentor_Group
{
    class Program
    {
        static void Main(string[] args)
        {

            List<Student> students = new List<Student>();
            Student student = new Student();



            while (true)
            {
                string input = Console.ReadLine();
                if (input == "end of dates")
                {
                    break;
                }
                string[] clientInfo = input.Split(' ', ',');


                List<DateTime> dates = new List<DateTime>();

                for (int i = 1; i < clientInfo.Length;i++ )
                {

                    dates.Add(DateTime.ParseExact(clientInfo[i],"dd/MM/yyyy", CultureInfo.InvariantCulture));
                }

                student.name = clientInfo[0];
                student.attendanceDate = dates;

            }
            while (true)
            {
                string input2 = Console.ReadLine();
                if (input2 == "end of comments")
                {
                    break;
                }
                string[] clientInfo = input2.Split('-');

                var comments = clientInfo[1];
                student.comments.Add(comments);

            }
            students.Add(student);

            PrintResults(students);

    }
        private static void PrintResults(List<Student> studentsGroup)
        {
            foreach (var student in studentsGroup.OrderBy(x=>x.name))
            {
                Console.WriteLine(student.name);
                Console.WriteLine("Comments:");
                if (student.comments.Count > 0)
                {
                    Console.WriteLine("- " + string.Join("\n- ", student.comments));
                }
                Console.WriteLine("Dates attended:");
                if (student.attendanceDate.Count > 0)
                {
                    foreach (var date in student.attendanceDate.OrderBy(x=>x.Date))
                    {
                        Console.WriteLine($"-- {0:dd/MM/yyyy}",student.attendanceDate);
                    }
                }
            }
        }
    class Student
    {
        public List<string> comments { get; set; }
        public List<DateTime> attendanceDate { get; set; }
        public string name { get; set; }
    }
}
}