In less than half an hour, Xu Chuan had already completed all the questions, but it was still early to hand in the papers, although it was possible to submit the papers in advance, but the competition in Xiangnan Province had regulations that the papers should be submitted half an hour in advance at most.

Idle, Xu Chuan checked the test paper first, and after confirming that there was no problem, he looked left and right at the status of the others.

A young lady on the right is struggling to write, and he doesn't know where she has done it, but her excellent eyesight tells him that this young lady is not answering questions, but drawing a sketch on scratch paper, and the drawing is still a kun.

The child on the left, who was less than 1.4 meters tall, was staring at the test paper with a pen in his hand.

Well, it seems that this kid came to experience whether the food at the middle school attached to the teacher was delicious or not, and I don't know which school he sent it.

In addition, there is a big brother in front of him who heads little by little, on average once every two seconds, and in the second half a minute, he shakes his head violently, forcing himself to be clear, and the cycle repeats.

As for the back, Xu Chuan doesn't know, after all, turning his head to look at the back, there is a probability that he will be regarded as cheating by the invigilator.

......

After staying up for more than half an hour, the time to hand in the papers ahead of schedule finally arrived, Xu Chuan decisively stuffed the student card and the admission ticket into his pocket, handed in the papers in advance and left.

As for the rest of the people who are still struggling in the exam room, it has nothing to do with him.

And in a way, he helps them improve their scores by giving candidates who haven't finished answering the questions a more relaxed exam environment in advance.

When they came to the rest area, waiting outside were not only their leading teacher Gong Rihui, but also some students who also submitted their papers in advance.

"Brother Chuan, here."

The little round-faced Lu Tianrui saw Xu Chuan with sharp eyes, and waved his hands excitedly.

"Take a break, drink some water, and get ready for a second try."

Gong Rihui smiled and handed over a bottle of water, without asking how the test was.

A try is a small kiss for Xingcheng No. 1 Middle School, and more than half of the more than 30 students can get a full score, after all, the difficulty is only a little stronger than the college entrance examination.

The second test is the place where the strong ones are really screened.

......

The break is not long, even for students who hand in their papers in advance, it is only more than half an hour, and those who do not hand in their papers until the end have at most ten minutes to drink saliva and go to the toilet to solve their personal physiological needs.

Compared with the first attempt, the second attempt is much more difficult.

Although it only has four questions, it involves four aspects: plane geometry, algebra, number theory, and combinatorics, and the difficulty level has also been raised from slightly more difficult than the college entrance examination to the level of real competition.

Compared with the first test of 80 minutes, less than an hour and a half of the examination time, the second test time of the second test has been extended to 150 minutes, that is, two and a half hours, which is nearly half.

From the extended time, you can know that the difficulty has increased more than a little bit.

Four questions, four test papers, one at a time.

Four questions, two and a half hours of exam time, an average of a question a little more than half an hour.

As is the old habit, after getting the test papers, Xu Chuan still browsed all the questions first.

Fermat points are tested in plane geometry, intersection operations are tested in algebra, functions are tested in number theory, and combinatorial identities are tested in combinatorial mathematics.

Judging from the topic, according to Xu Chuan's personal judgment, the difficulty is much higher than the previous attempt.

This can be seen from the children and young ladies on the left and right.

When they tried it for the first time, these two could still make a few questions, but when they got the test paper for the second time, they were stupid.

Don't say you did it, I can't understand the questions of the second test.

"In this exam, I'm afraid that most of the students will have to sink into the sand, and I don't know how many can get full marks."

After reading the question, Xu Chuan shook his head, in the past half a month of intensive training, he has finished the CMO competition questions of the past ten years and the competition questions of the first examination.

In terms of difficulty, this year's preliminary test can be ranked in the top three or even the first in the past ten years, and this year's second test is not only high in overall difficulty, but also has a super finale question.

The finale is the last question, a verification of combinatorial identities, and solving this combinatorial identity proof requires at least nine combinatorial identities, not only to test the three special types of equations of Yang Hui's triangle and Veda, but also mixed with probability theory, the complexity is so high that it should not appear in the preliminary competition of the second test.

In the competition, probability is a relatively unpopular knowledge point, which is completely different from the popular geometry, which exists every year, and the probability may not be encountered once in a few years.

The proof of this combinatorial identity, even if it is put into the national decision, is very difficult, the kind of finale

The expert who came up with the question this time is really ruthless, putting aside this combination identity, at the level of one middle school, more than 30 students should be able to get a full score in more than a dozen, but with this identity, let alone ten, aside from him, it is a very good result for others to get a full score.

Shaking his head, Xu Chuan filled in his name and admission ticket number, and then began to do the questions.

It was still the familiar early handing in the papers, but this time, when he returned to the rest point, only Mr. Gong Rihui, who led the team, was waiting here alone.

"How's the test?" Gong Rihui smiled and handed Xu Chuan a bottle of water and asked.

"The questions this time are much more difficult than in previous years, the combination of identities is tested, and probability theory is mixed in the middle, the difficulty is not low, I am afraid that the number of people who get full marks will be much less." Xu Chuan took the water, unscrewed the cap, took a sip, and said lightly.

"Are you sure?"

Hearing this, Gong Rihui restrained the smile on his face and asked.

After more than half a month of intensive training, he saw the mathematical skills and talent of the student in front of him, which was simply surprising and doubtful of life.

Sometimes, when discussing certain issues, when Xu Chuan put forward some ideas and opinions, he even had the feeling that he was communicating with his peers, no, and teachers in college.

If he is not sure that he will get a full score, then I am afraid that this time Star City No. 1 Middle School will be wiped out.

In addition, the difficulty of the questions can be seen from the number of students who submit the papers early, and generally speaking, the more people who submit the papers in advance, the easier the questions will be.

Students who can participate in the competition, even if they can't do it, many people have to stay up until the end of the exam, after all, who can say that the last half hour will suddenly come to inspiration?

Of course, I can't understand that kind of question, but there are students who come to experience the atmosphere every year.

No, there are a few students around who handed in the papers in advance like Xu Chuan, and kept complaining that the questions were too difficult and wrote the word 'solution'.

......

ps: Ask for a monthly pass, ask for a recommendation ticket, ask for a comment, ask for tap water, and ask for ༼つ◕_◕༽つ for everything