public class ComboBreaker
{
    public static final String DATA_FILE = "input.txt";

    public static void main (String[] args)
    {
        boolean debug = false;

        for (int i = 0; i < args.length; i++)
        {
            if ("-help".equals(args[i]))
            {
                System.out.println("Usage: [-debug] [-help]");
                System.exit(0);
            }

            if ("-debug".equals(args[i]))
                debug = true;
        }


    }
}

@@ -1,12 +1,31 @@
+import java.io.*;%0A%0A
 public class
@@ -483,16 +483,225 @@
      %7D%0A%0A
+        BufferedReader reader = new BufferedReader(new FileReader(DATA_FILE));%0A%0A        int cardPublicKey = Integer.parseInt(reader.readLine());%0A        int doorPublicKey = Integer.parseInt(reader.readLine());
 %0A    %7D%0A%7D

Update ComboBreaker.java