Wish Underflow

The genie just got outsmarted by integer underflow! When asked to make the wish count 0, the genie accidentally triggered the classic 8-bit unsigned integer underflow. Decrementing below 0 wraps around to 255 (2^8 - 1), giving our clever programmer way more wishes than the standard package. It's basically a buffer overflow exploit, but for magical entities. Bet the genie's code wasn't properly sanitizing user input!