Problem 2. SoftUni Karaoke

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

namespace Exerciese
{
    class Program
    {
        static void Main(string[] args)
        {
            var participansInKaraoke = Console.ReadLine().Split(new[] { ',', ' ' }, StringSplitOptions.RemoveEmptyEntries).ToList().Select(x => x.Trim());
            var songsInKaraoke = Console.ReadLine().Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries).ToList().Select(x => x.Trim());

            var peopleAwards = new Dictionary<string, HashSet<string>>();

            while (true)
            {
                var tokens = Console.ReadLine().Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries).ToList(); ;
                if (tokens[0] == "dawn")
                {
                    break;
                }

                var participan = tokens[0].Trim();
                var song = tokens[1].Trim();
                var award = tokens[2];

                if (participansInKaraoke.Contains(participan) && songsInKaraoke.Contains(song))
                {
                    if (!peopleAwards.ContainsKey(participan))
                    {
                        peopleAwards[participan] = new HashSet<string>();
                    }
                    peopleAwards[participan].Add(award);
                }
                else
                {
                    continue;
                }

            }
            if (peopleAwards.Keys.Count == 0)
            {
                Console.WriteLine("No awards");
            }
            else
            {
                foreach (var item in peopleAwards.Where(x => x.Value.Count > 0).OrderByDescending(x => x.Key).ThenBy(x => x.Key).ThenBy(x => x.Value))
                {
                    Console.WriteLine($"{item.Key}: {item.Value.Count} awards");
                    foreach (var i in item.Value)
                    {
                        Console.WriteLine($"--{i.Trim()}");
                    }
                }
            }


        }


    }
}