SoftUni_Karaoke

using System;
using System.Collections.Generic;
using System.Linq;

namespace SoftUni_Karaoke
{
    class Program
    {
        static void Main(string[] args)
        {
            List<string> participants = Console.ReadLine()
                .Split(new string[] { ", " },
                StringSplitOptions.RemoveEmptyEntries).ToList();

            List<string> songs = Console.ReadLine()
                .Split(new string[] { ", " },
                StringSplitOptions.RemoveEmptyEntries).ToList();

            string input = Console.ReadLine();

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

            while (input != "dawn")
            {
                string[] parts = input
                    .Split(new string[] { ", " },
                    StringSplitOptions.RemoveEmptyEntries);

                string name = parts[0];
                string song = parts[1];
                string award = parts[2];

                if (!participants.Any(p => p == name) || !songs.Any(s => s == song))
                {
                    input = Console.ReadLine();
                    continue;
                }

                if (!awarded.ContainsKey(name))
                {
                    awarded.Add(name, new List<string>());
                }
                awarded[name].Add(award);

                input = Console.ReadLine();
            }

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

            foreach (var singer in awarded
                .OrderByDescending(x => x.Value.Distinct()
                .ToList().Count)
                .ThenBy(x => x.Key))
            {
                List<string> awards = singer.Value.Distinct().ToList();

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