Feed the Animals

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

namespace DemoFinalExam
{
    class Program
    {
        static void Main(string[] args)
        {
            string input = Console.ReadLine();
            var saveStats = new Dictionary<string, Dictionary<string, int>>();
            while (input != "Last Info")
            {
                var splitedInput = input
                    .Split(":", StringSplitOptions.RemoveEmptyEntries)
                    .ToList();
                string mainCommand = splitedInput[0];
                switch (mainCommand)
                {
                    case "Add":
                        string animalName = splitedInput[1];
                        int food = int.Parse(splitedInput[2]);
                        string area = splitedInput[3];
                        if (!saveStats.ContainsKey(area))
                        {
                            saveStats[area] = new Dictionary<string, int>();
                        }
                        if (!saveStats[area].ContainsKey(animalName))
                        {
                            saveStats[area][animalName] = 0;
                        }
                        saveStats[area][animalName] += food;
                        break;
                    case "Feed":
                        animalName = splitedInput[1];
                        int foodInNeed = int.Parse(splitedInput[2]);
                        area = splitedInput[3];
                        if (saveStats.ContainsKey(area))
                        {
                            if (saveStats[area].ContainsKey(animalName))
                            {
                                saveStats[area][animalName] -= foodInNeed;
                                if (saveStats[area][animalName] <= 0)
                                {
                                    Console.WriteLine($"{animalName} was successfully fed");
                                    saveStats[area].Remove(animalName);
                                }
                            }
                        }
                        break;
                }

                input = Console.ReadLine();
            }
            Console.WriteLine($"Animals:");
            foreach (var valuesOfStats in saveStats.Where(x => x.Value.Values.Count > 0).OrderByDescending(x => x.Value.Values.Max()).ThenBy(x => x.Value.Keys))
            {
                foreach (var item in valuesOfStats.Value.OrderByDescending(x => x.Value).ThenBy(x => x.Key))
                {
                    Console.WriteLine($"{item.Key} -> {item.Value}g");
                }
            }
            Console.WriteLine("Areas with hungry animals:");
            foreach (var second in saveStats.Where(x => x.Value.Values.Count > 0).OrderByDescending(x => x.Value.Values.Count))
            {
                Console.WriteLine($"{second.Key} : {second.Value.Count}");
            }
        }
    }
}