A list of bugs for you to find.
To contribute, put your code into a directory named yyyy-mm-dd-hh-mm-ss. Put a README.txt in your directory. If it's an assignment, you can include the pdf. The README.txt should include some info on the program such as course number and assignment number, etc. If it's a personal project, describe the project. Nobody is going to read it if it contains too much irrelevant junk. So prune it down to the relevant parts. In your README.txt, you can describe what the code should do. Remove executables. Gzip and tar and send to me.
If you are stumped contact contributor.