FixedSoftUniKaraoke

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

namespace SoftuniKaraoke
{
    public class SoftuniKaraoke
    {
        public static void Main()
        {
            string[] participants = Console.ReadLine().Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries).Select(x => x.Trim()).ToArray();
            string[] avaliableSongs = Console.ReadLine().Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries).Select(x => x.Trim()).ToArray();

            Dictionary<string, List<string>> winners = new Dictionary<string, List<string>>();

            string inputLine = Console.ReadLine();
            while (inputLine != "dawn")
            {
                string[] singerInfo = inputLine.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries).Select(x => x.Trim()).ToArray();

                string singer = singerInfo[0];
                string song = singerInfo[1];
                string award = singerInfo[2];

                if (!participants.Any(s => s == singer) || !avaliableSongs.Any(s => s == song))
                {
                    inputLine = Console.ReadLine();

                    continue;
                }

                if (!winners.ContainsKey(singer))
                {
                    winners.Add(singer, new List<string>());
                }

                winners[singer].Add(award);

                inputLine = Console.ReadLine();
            }

            if (winners.Count == 0)
            {
                Console.WriteLine("No awards");

                return;
            }

            foreach (KeyValuePair<string, List<string>> pair in winners
                                                                .OrderByDescending(a => a.Value.Distinct().ToList().Count)
                                                                .ThenBy(n => n.Key))
            {
                List<string> awards = pair.Value.Distinct().ToList();

                Console.WriteLine($"{pair.Key}: {awards.Count} awards");
                foreach (string award in awards.OrderBy(n => n))
                {
                    Console.WriteLine($"--{award}");
                }
            }
        }
    }
}