A person named @subway2023 found 18 problems in a computer program called the Parity Technologies revive Solidity compiler. They told the people who work on the program about these problems over 3 months. These problems helped the program get better and fix some mistakes. The person in charge of the program thinks @subway2023 did a great job and wants to give them a reward of 100. You can see all the problems they found here: link. And here is the place where they talked about giving the reward: link.