纠缠不清by柠檬火焰

This set of questions was asked by a famous mathematics professor in Beijing and Beijing. The difficulty is very high. The head teacher took out this test paper. This test paper was originally intended to be given to students as homework, but now he had no choice but to take it out. In order to test Ye Qiu's true level, he wanted to watch Ye Qiu do the questions with his own eyes....