using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;

namespace _13_LoadTimeCalculator
{
    class LoadTimeCalculator
    {

        static void Main()

        {
            string logData = @"2014-Apr-01 02:01 http://softuni.bg 8.37725
2014-Apr-01 02:05 http://www.nakov.com 11.622
2014-Apr-01 02:06 http://softuni.bg 4.33
2014-Apr-01 02:11 http://www.google.com 1.94
2014-Apr-01 02:11 http://www.google.com 2.011
2014-Apr-01 02:12 http://www.google.com 4.882
2014-Apr-01 02:34 http://softuni.bg 4.885
2014-Apr-01 02:36 http://www.nakov.com 10.74
2014-Apr-01 02:36 http://www.nakov.com 11.75
2014-Apr-01 02:38 http://softuni.bg 3.886
2014-Apr-01 02:44 http://www.google.com 1.04
2014-Apr-01 02:48 http://www.google.com 1.4555
2014-Apr-01 02:55 http://www.google.com 1.977

                            ";

            string logLine = null;
            StringReader strReader = new StringReader(logData);
            List<LogObject> log = new List<LogObject>();
            bool loop = true;
            while(loop)
            {
                logLine = strReader.ReadLine();
                if (logLine != null)
                {
                    //check if the logLine is empty
                    if (!string.IsNullOrWhiteSpace(logLine))
                    {
                        string[] logLineParsed = logLine.Trim().Split(' ');
                        string url = logLineParsed[2];
                        double loadTime = double.Parse(logLineParsed[3], CultureInfo.CreateSpecificCulture("en-GB"));
                        bool existsInLog = false;
                        int logID = 0;
                        for (int i = 0; i < log.Count; i++)
                        {
                            if (log[i].url == url)
                            {
                                existsInLog = true;
                                logID = i;
                                break;
                            }
                        }
                        //if the url exist in the log
                        if (existsInLog)
                        {
                            double avTime = (log[logID].loadTime * log[logID].count + loadTime) / (log[logID].count + 1);
                            log[logID].loadTime = avTime;
                            log[logID].count = log[logID].count + 1;
                        }
                        else
                        {
                            LogObject data = new LogObject();
                            data.url = url;
                            data.loadTime = loadTime;
                            data.count = 1;
                            log.Add(data);
                        }
                    }
                }
                else
                {
                    //exit from loop
                    loop = false;
                }
            }

            PrintResult(log);
        }

        static void PrintResult(List<LogObject> log)
        {
            for (int i = 0; i < log.Count; i++)
            {
                Console.WriteLine("{0} -> {1}", log[i].url, log[i].loadTime);
            }
        }
    }

    public class LogObject
    {
        public string url { get; set; }
        public double loadTime { get; set; }
        public int count { get; set; }
    }
}