I got rewarded 100 LeetCoins for reporting contest violators. It took me by surprise since hard coding failed test cases during contests has been going on for quite a while and people have been complaining about that. I checked the rank board and these participants have actually been removed. I don't really care about the leetcoin reward but let's strive for keeping this community free of cheating. After all, no one wants to see LeetCode is plagued with cheaters.