Please put your codes in a directory called "b03902xxx" (your student ID), and then compress the directory as a bzip2 file, and upload this archive. You may use the tar command in UNIX, e.g., "tar jcvf b03902xxx.tar.bz2 b03902xxx".
Note that it's not allowed to add other file/folder in the root directory of the archive, e.g., "desktop.ini", ".DS_Store", ".dropbox", ".dolphin", or "__MACOSX". Please be careful about these problems because it's a basic skill and manners for a programmer to avoid giving others garbage files, especially in the root directory of an archive.
For other detail, please refer to the course website.
If you have any question, please send an email to dsa@csie.ntu.edu.tw