When you arrive on the day of the contest, you must bring a disk with your program on it. The disk must contain the source code of the interpreter, the executable, and a short description file.
In your description please tell us about your solution to the problem. Describe your implementation of the missing pieces of the interpreter. Tell us if you have extended the interpreter in a way that eliminates some of the limits (which ones, and how). Also please tell us what kinds of things you could have done if you had more time and how you would have done them.