PlantDiscovery

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

namespace PlantDiscovery_Krassy
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());

            // Dictionary  with names and rarities
            var plantsRarity = new Dictionary<string, int>();
            var ratings = new Dictionary<string, List<double>>();

            for (int i = 0; i < n; i++)
            {
                var info = Console.ReadLine().Split("<->", StringSplitOptions.RemoveEmptyEntries).ToArray();
                var namePlant = info[0];
                var rarity = int.Parse(info[1]);

                if (!plantsRarity.ContainsKey(namePlant))
                {
                    plantsRarity.Add(namePlant, rarity);
                    ratings.Add(namePlant, new List<double>());
                }
                else
                {
                    plantsRarity[namePlant] = rarity;
                    ratings[namePlant] = new List<double>();
                }
            }

            var input = Console.ReadLine();

            while (input != "Exhibition")
            {
                var data = input.Split(':', StringSplitOptions.RemoveEmptyEntries).ToArray();
                var command = data[0];
                var extraInfo = data[1].Split("-", StringSplitOptions.RemoveEmptyEntries).ToArray();
                var nameP = extraInfo[0];
                var ratingOrRarity = extraInfo[1];

                if (command == "Rate")
                {
                    ratings[nameP] = new List<double>();
                    ratings[nameP].Add(double.Parse(ratingOrRarity));
                }
                else if (command == "Update")
                {
                    plantsRarity[nameP] = int.Parse(ratingOrRarity);
                }
                else if (command == "Reset")
                {
                    ratings[nameP].Clear();
                    ratings[nameP].Add(0);
                }
                else
                {
                    Console.WriteLine("Error");
                    break;
                }

                input = Console.ReadLine();

            }

            if (input == "Exhibition")
            {
                Console.WriteLine("Plants for the exhibition:");


                // Problem!!!!!!
                var raritySorted = plantsRarity.OrderByDescending(x => x.Value).ToDictionary(a => a.Key, b => b.Value);

                foreach (var (plant, rarity) in raritySorted)
                {

                    if (ratings.ContainsKey(plant))
                    {
                        double average = 0;

                        if (ratings[plant].Any())
                        {
                            average = ratings[plant].Average();
                        }

                        ratings[plant].Clear();
                        ratings[plant].Add(average);
                    }
                }

                //foreach (var (plant, info) in ratings.OrderByDescending(a => a.Value[0]).ThenByDescending(b => b.Value[1]))
                //{
                //    Console.WriteLine($"- {plant}; Rarity: {info[0]}; Rating: {info[1]:f2}");
                //}
            }
        }
    }
}