I also took the first-place exam, I think. The exam ranked first can be used as an auxiliary teaching material. You can refer to the number one test and focus on proof. However, if you want to take the top prize, I think it's still the top prize. I'm a math major, and I'm one of the best, but I want to be one of the best in the cross-disciplinary exam for the postgraduate entrance examination, so I use one of the best when reviewing. To be honest, I don't think the number one book is very useful. I hope you are satisfied with the answer! ! !