EXAM*02.SoftUniKaraoke

namespace Exam
{
    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text.RegularExpressions;

    public class SoftUniKaraoke
    {
        static void Main()
        {
            string[] allParticipants = Regex.Split(Console.ReadLine(), @"\s*,\s*");
            string[] allSongs = Console.ReadLine().Split(',').Select(s => s.Trim()).ToArray();
            var awardsByParticipant = new Dictionary<string, HashSet<string>>(); //name, awards(unique)

            foreach(var p in allParticipants)
            {
                awardsByParticipant[p] = new HashSet<string>();
            }

            while (true)
            {
                var line = Console.ReadLine();
                if (line == "dawn")
                {
                    break;
                }

                var tokens = Regex.Split(line, @"\s*,\s*");
                var participant = tokens[0];
                var song = tokens[1];
                var award = tokens[2];

                if (allParticipants.Contains(participant) && allSongs.Contains(song))
                {
                    awardsByParticipant[participant].Add(award);
                }
            }

            var result = awardsByParticipant.Select(item => new
            {
                playerName = item.Key,
                awards = item.Value.Distinct().OrderBy(a => a),
                awardsCount = item.Value.Distinct().Count()
            })
            .OrderByDescending(p => p.awardsCount) //sort by awards count in descending order
            .ThenBy(p => p.playerName)  //sort alphabetically by name
            .Where(p => p.awardsCount > 0) //remove people with 0 awards
            .ToArray();

            foreach(var p in result)
            {
                Console.WriteLine(p.playerName + ": " + p.awardsCount + " awards");
                foreach(var aw in p.awards)
                {
                    Console.WriteLine("--" + aw);
                }
            }

            if(result.Length == 0)
            {
                Console.WriteLine("No awards");
            }
        }
    }
}