Answers to programming problems should be submitted electronically, using the packaging and submission procedure that will be described in class or on the class discussion forum.
All electronic submissions must be made using the specified procedure. Electronic submissions in all other forms, such as email or physical media, will be discarded and receive no credit.
Answers to non-programming problems should be submitted both electronically as above in PDF format and in physical paper format in class. The PDF file may be either a scanned copy of handwritten work or generated directly from a typed electronic version (your choice). However, it is critically important that your submission have good legibility regardless of how it is produced. Please be very mindful of file sizes especially if you use scanned PDFs. Unless you are adept at a program that typesets math well, well written and well scanned hand-written versions are likely to be better than clumsily typed versions. Illegible, hard to read, or otherwise messy submissions, whether handwritten on typed, are likely to be returned without grading, for zero credit.
Fallback procedure If (and only if) there are unexpected problems and you are unable to submit your work as above, then you should save your file on your own computer (with some backups), compute its MD5 checksum using the md5sum utility on Unix-like systems (or other similar tools), and submit the file name, time stamp, and MD5 checksum (only, not the file itself) by email with a suitable Subject header.