Trainlands

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

namespace _04.Trainlands
{
    public class StartUp
    {
        public static void Main()
        {
            Dictionary<string, Dictionary<string, long>> trains = new Dictionary<string, Dictionary<string, long>>();
            while (true)
            {
                string input = Console.ReadLine();
                var commandArgs = input
                        .Split(new char[] { '-', '>', ':', ' ', '=' }, StringSplitOptions.RemoveEmptyEntries)
                        .ToArray();
                string trainName = commandArgs[0];
                if (input == "It's Training Men!")
                {
                    break;
                }
                if (commandArgs.Length == 3)
                {
                    string wagonName = commandArgs[1];
                    long wagonPower = long.Parse(commandArgs[2]);
                    if (!trains.ContainsKey(trainName))
                    {
                        trains.Add(trainName, new Dictionary<string, long>());
                    }
                    trains[trainName].Add(wagonName, wagonPower);
                }
                else
                {
                    if (input.Contains("="))
                    {
                        string otherTrain = commandArgs[1];
                        if (!trains.ContainsKey(trainName))
                        {
                            trains.Add(trainName, new Dictionary<string, long>());
                        }
                        trains[trainName].Clear();
                        foreach (var train in trains[otherTrain])
                        {
                            trains[trainName].Add(train.Key, train.Value);
                        }
                    }
                    else
                    {
                        string otherTrain = commandArgs[1];
                        if (!trains.ContainsKey(trainName))
                        {
                            trains.Add(trainName, new Dictionary<string, long>());
                        }
                        foreach (var train in trains[otherTrain])
                        {
                            trains[trainName].Add(train.Key, train.Value);
                        }
                        trains.Remove(otherTrain);
                    }
                }
            }
            foreach (var train in trains.OrderByDescending(x => x.Value.Values.Sum()).ThenBy(y => y.Value.Count))
            {
                Console.WriteLine($"Train: {train.Key}");
                foreach (var wagon in train.Value.OrderByDescending(x => x.Value))
                {
                    Console.WriteLine($"###{wagon.Key} - {wagon.Value}");
                }
            }
        }
    }
}