user logs

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

class Program
    {
        static void Main()
        {
         Dictionary<string,Dictionary<string,int>> allusers=new Dictionary<string, Dictionary<string, int>>();


            string input;
            while ((input=Console.ReadLine())!="end")
            {
               Users(input,allusers);

            }
           PrintResult(allusers);

        }
        public static void Users(string input, Dictionary<string, Dictionary<string, int>> allusers)
        {
            string[] tokens = input.Split(new[] { ' ', '=' }, StringSplitOptions.RemoveEmptyEntries).ToArray();
            string ip = tokens[1];
            string user = tokens[5];
            if (!allusers.ContainsKey(user))
            {
                allusers.Add(user, new Dictionary<string, int>());
                allusers[user].Add(ip, 1);
            }
            else
            {
                if (!allusers[user].ContainsKey(ip))
                {
                    allusers[user].Add(ip, 1);
                }
                else
                {
                    allusers[user][ip] += 1;
                }
            }
        }

        public static void PrintResult(Dictionary<string, Dictionary<string, int>> allusers)
        {
        var result = allusers.OrderBy(x => x.Key);
        foreach (var user in result)
            {

                Console.WriteLine($"{user.Key}:");
                int count = user.Value.Count;
                foreach (var details in user.Value)
                {
                    count--;
                    if (count == 0)
                    {
                        Console.WriteLine($"{details.Key} => {details.Value}.");

                    }
                    Console.WriteLine($"{details.Key} => {details.Value},");
                }
            }
        }
    }