using System;
using System.IO;

class Program
{
    static void Main(string[] args)
    {
        if (args.Length == 0)
        {
            Console.WriteLine("Need a file name as first argument!");
            return;
        }

        string longest = "";
        int lines = 0;
        int longestIndex = 0;

        using (var stream = File.OpenRead(args[0]))
        using (var reader = new StreamReader(stream))
        {
            string line;
            while ((line = reader.ReadLine()) != null)
            {
                if (line.Length > longest.Length)
                {
                    longest = line;
                    longestIndex = lines;
                }
                lines++;
            }
        }

        if (lines > 0)
        {
            Console.WriteLine("File had a total of {0} lines.", lines);
            Console.WriteLine("Longest line found on line {0} with {1} characters.", 
                longestIndex, longest.Length);
            Console.WriteLine("The line was: {0}", longest);
        } 
        else
        {
            Console.WriteLine("The file had no readable lines!");
        }
    }
}