MOBA Challenger

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

class Program
{

    static void Main()
    {

        string command = Console.ReadLine();

        Dictionary<string, Dictionary<string, int>> users = new Dictionary<string, Dictionary<string, int>>();


        while(command != "Season end")
        {
            if (command.Contains("->"))
            {
                string[] line = command.Split(" -> ");
                string name = line[0];
                string position = line[1];
                int points = int.Parse(line[2]);

                if (!users.ContainsKey(name))
                {
                    users.Add(name, new Dictionary<string, int>()
                    {
                        {position, points }

                    });
                }
                else
                {
                    if (users.ContainsKey(name))
                    {
                        if (!users[name].ContainsKey(position))
                        {
                            users[name].Add(position, points);
                        }
                        else
                        {
                            if(users[name][position] < points)
                            {
                                users[name][position] = points;
                            }
                        }
                    }
                }
            }

            else
            {
                string[] line = command.Split(" vs ");
                string firstPlayer = line[0];
                string secondPlayer = line[1];

                if(users.ContainsKey(firstPlayer) && users.ContainsKey(secondPlayer))
                {
                    foreach (var first in users[firstPlayer])
                    {
                        foreach (var second in users[secondPlayer])
                        {
                            if(first.Key == second.Key)
                            {
                                if(users[firstPlayer].Values.Sum() > users[secondPlayer].Values.Sum())
                                {
                                    users.Remove(secondPlayer);
                                }
                                else
                                {
                                    users.Remove(firstPlayer);
                                }
                            }
                        }
                    }
                }
            }

            command = Console.ReadLine();
        }

        foreach (var item in users.OrderByDescending(s => s.Value.Values.Sum()).ThenBy(x => x.Key))
        {

            int totalSkills = item.Value.Values.Sum();
            Console.WriteLine($"{item.Key}: {totalSkills} skill");

            foreach (var kvp in item.Value.OrderByDescending(s => s.Value))
            {
                Console.WriteLine($"- {kvp.Key} <::> {kvp.Value}");
            }
        }

    }
}