we are using lot of slim CD/DVD R/RW, the lense was damaged because of handling. what are all the pre cautions or warning msg i need. pls. clarify my doubts.

For example, I have never actually had to use the STL, so will probably implement some common data structures from scratch, probably with some really stupid mistakes, but I'm sure I can still cobble together something that will pass the test cases. Will that count for or against me?

If my submission happens to be run more than once, will any files it creates be deleted before it starts again?

You say its not supposed to be an obfuscation contest, but a lot of the threads seem to imply that it is better to make something unreadable and confusing (by printing binary assembly code directly to memory and running it, or other silly things) than to make complicated but readable code. In other words...