Personally, if math is 99% perfect now, you can choose to study in advance. Many people say that Olympiad is only to learn in advance, but from a practical point of view, learning mathematics in advance is more practical than Olympiad. If you teach yourself, you can also exercise your autonomous learning ability. Although many people think that Olympiad is more about training your thinking ability, in fact, the thinking space of Olympiad is narrower, and if you are not proficient, it will cause some thinking dead ends for general learning. Many students who pass the Olympic Mathematics are usually difficult to continue to dominate in colleges and universities unless your study habits and stress resistance are excellent.