SrubskoUnleashed

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;

namespace _10Problem_SrubskoUnleashed
{
    class Program
    {
        static void Main(string[] args)
        {
            string venues;
            string singerName;
            int ticketPrice;
            long ticketCount;
            long totalMoney;

            var placeAndSingers = new Dictionary<string, Dictionary<string, long>>();
            const string pattern = @"([a-zA-Z]+\s){1,3}@([a-zA-Z0-9]+\s){1,3}[0-9]+\s[0-9]+";

            string concertInfo = Console.ReadLine();

            while (concertInfo.Equals("End") == false)
            {
                var isTheInputValid = Regex.Match(concertInfo, pattern);

                if (isTheInputValid.Success)
                {
                    string[] splitConcertInfo = concertInfo.Split('@');
                    string[] rightPart = splitConcertInfo[1].Trim().Split();

                    singerName = splitConcertInfo[0].Trim();
                    venues = string.Join(" ", rightPart.Take(rightPart.Length-2).ToArray());


                    ticketPrice = int.Parse(rightPart[rightPart.Length - 2]);
                    ticketCount = long.Parse(rightPart[rightPart.Length - 1]);
                    totalMoney = ticketPrice * ticketCount;

                    if (placeAndSingers.ContainsKey(venues) == false)
                    {
                        placeAndSingers.Add(venues, new Dictionary<string, long>());
                        placeAndSingers[venues].Add(singerName, totalMoney);
                    }
                    else
                    {
                        if (placeAndSingers[venues].ContainsKey(singerName) == false)
                        {
                            placeAndSingers[venues].Add(singerName, totalMoney);
                        }
                        else
                        {
                            placeAndSingers[venues][singerName] += totalMoney;
                        }
                    }
                }

                concertInfo = Console.ReadLine();
            }

            foreach (var place in placeAndSingers)
            {
                Console.WriteLine($"{place.Key}");

                foreach (var singerAndMoney in place.Value.OrderByDescending(x => x.Value))
                {
                    Console.WriteLine($"#  {singerAndMoney.Key} -> {singerAndMoney.Value}");
                }
            }
        }
    }
}