what if we just force them to stay in prison until they solve a super hard $$$3500$$$-rated codeforces IQ problem? Maybe the worst criminals would have to solve a $$$3500$$$-rated IQ problem, but the more tame ones would only have to do like a $$$3000$$$-rated problem. This could make it easier for smarter criminals to get out of prison so that they can continue contributing to society. For the most part, unfortunately, dumber criminals are pretty much a lost cause. Solving a $$$3500$$$-rated IQ problem is no easy task, of course. It might take years for the average criminal to solve one.