[Tobani]

I had a similar problem. Where we were supposed to do some sort of optimization (loop unrolling or something) to a function. We had done this several times throughout the course. But this time loop was slightly different (unintentionally) and I managed to construct some answer that I wasn't happy with and turned in the exam last. We got the papers back and of course mine was wrong in spite of producing correct results, while everybody who blinding applied the wrought memorized mechanization we had learned got it right. It took forever for that professor to understand how bad the question was.