using System;
using System.Threading;
using System.IO;

class Reader {
  string fileName;
  public string data;
  
  public Reader(string fn) { fileName = fn; }
  
  public void Read() {
    FileStream s = new FileStream(fileName, FileMode.Open);
    StreamReader r = new StreamReader(s);
    data = r.ReadToEnd();
    r.Close();
    s.Close();
  }
}

class ThreadSample {
  
  static void Main(string[] arg) {
    if (arg.Length == 2) {
      Reader a = new Reader(arg[0]);
      Reader b = new Reader(arg[1]);
      Thread ta = new Thread(new ThreadStart(a.Read));
      Thread tb = new Thread(new ThreadStart(b.Read));
      ta.Start();
      tb.Start();
      ta.Join();
      tb.Join();
      if (a.data.Length == b.data.Length) {
        int i = 0;
        while (i < a.data.Length && a.data[i] == b.data[i]) i++;
        if (i == a.data.Length)
          Console.WriteLine("Files {0} and {1} are equal", arg[0], arg[1]);
        else
          Console.WriteLine("Files {0} and {1} are not equal", arg[0], arg[1]);
      } else {
        Console.WriteLine("Files {0} and {1} are not equal", arg[0], arg[1]);
      }
    } else {
      Console.WriteLine("-- enter two file names");
    }
  }

}