Messages Manager

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

namespace ConsoleApp4
{
    class Program
    {
        static void Main(string[] args)
        {
            int capacity = int.Parse(Console.ReadLine());
            string input = Console.ReadLine();
            Dictionary<string, int> sentMessages = new Dictionary<string, int>();
            Dictionary<string, int> recievedMessages = new Dictionary<string, int>();
            while (input != "Statistics")
            {
                string[] tokens = input.Split('=').ToArray();
                if (tokens[0] == "Add")
                {
                    if (sentMessages.ContainsKey(tokens[0]) && recievedMessages.ContainsKey(tokens[0]))
                    {
                        continue;
                    }
                    else
                    {
                        int sent = int.Parse(tokens[2]);
                        int recieved = int.Parse(tokens[3]);
                        sentMessages.Add(tokens[1], sent);
                        recievedMessages.Add(tokens[1], recieved);
                    }
                }
                else if (tokens[0] == "Message")
                {
                    if (sentMessages.ContainsKey(tokens[1]) && recievedMessages.ContainsKey(tokens[2]))
                    {
                        sentMessages[tokens[1]]++;
                        recievedMessages[tokens[2]]++;
                        if (sentMessages[tokens[1]] == capacity)
                        {
                            Console.WriteLine($"{tokens[1]} reached the capacity!");
                            sentMessages.Remove(tokens[1]);
                        }
                        else if (recievedMessages[tokens[2]] == capacity)
                        {
                            Console.WriteLine($"{tokens[2]} reached the capacity!");
                            recievedMessages.Remove(tokens[2]);
                        }
                    }
                }
                else if (tokens[0] == "Empty")
                {
                    if (tokens[1] == "All")
                    {
                        sentMessages.Clear();
                        recievedMessages.Clear();
                    }
                    else
                    {
                        sentMessages.Remove(tokens[1]);
                        recievedMessages.Remove(tokens[1]);
                    }
                }
                input = Console.ReadLine();
            }
            Console.WriteLine($"Users count: {sentMessages.Count}");
            recievedMessages.OrderByDescending(x => x.Value);
            foreach (var user in sentMessages.OrderBy(x => x.Key))
            {
                string currentUser = user.Key;
                int recievedMessagesCount = recievedMessages[currentUser];
                int sum = recievedMessagesCount + user.Value;
                Console.WriteLine($"{user.Key} - {sum}");
            }
        }
    }
}