Guilty as charged. A program that did a <delay,print "RESET",delay> was enough (with a bit of execution timing) to show the examiner on the way into the hall that all was good.

The attention to detail really got to me however over time - the normal reset message was in lower case, but all the custom programs could print was in UPPER case. I was always "its sooo obvious - they'll find me out", when I saw RESET, but nobody ever clocked.

I never did use these notes or solvers in an exam - once I knew I had them, I would remember them anyway.