The Sand Sculpture God is using magic to bully the boss again

Xu Xingli entered the classroom without saying a word and sat down in the back row, struggling to digest what Yun Yan said.

In her memory, Xu Qishan teased Yun Yan and his aunt if he had nothing to do, but one day he suddenly became extremely indifferent to her and always avoided her.

During that time, Aunt Yunyan's face was always not very good-looking, she was sent to her current home by Xu Qishan before she could figure out what was going on.

That's why she always felt that Xu Qishan was hiding from a debt of love, but it doesn't seem like that's the case now?

It was more like Xu Qishan knew that he was ill, so he didn't want to delay Yun Yan's aunt, but the other party was so devoted to him that he even came back to China to force marriage?

Xu Xingli was puzzled, and felt that the emotional entanglement between adults was too complicated, and it was not suitable for an elementary school student like her who had just entered the Math Olympiad class.

She took out her draft book and pen: "I decided to study."

Emotional gossip does not necessarily have a correct answer, but mathematics certainly does.

The trainees who participated in the mathematics competition were mainly sophomores, with a small number of first-year students, as well as Xu Xingli and Yun Yan who accompanied them.

Everyone is under a lot of pressure, which is completely different from the atmosphere in Class 15.

No matter when you enter class 15, there will always be people laughing and joking, relaxed and at ease.

But here everyone does not speak when entering the classroom, and concentrates on writing questions. Before the teacher comes, this seems to be a self-study room.

It's great to have no pressure.

Xu Xingli sighed softly, Yun Yan might be the only one in this classroom who doesn't feel any pressure at all.

Their leading teacher, surnamed Yu, was a weird old man with half gray hair. He entered the classroom with a dark face and handed them papers without saying a word.

The students in the second year of high school seem to be accustomed to passing the papers one by one. The students in the first year of high school are a little confused, but they do the same.

Xu Xingli didn't care about anything else, she started writing after taking the paper, she was rushing to get the first place.

The first place in the training class was really hard to get, and Xu Xingli got stuck on the second question.

She didn't bother, she marked the topic and wrote it down.

There are many questions in the test paper that are beyond the standard for her, so she can only write down the ones she knows how to write first, and then press the mark to find the problems that are not beyond the standard.

As for the over-the-top questions, she could only rely on her intuition.

She could vaguely sense the restlessness of the other trainees. This question was probably prepared by Lao Yu specially for them, and the "over-the-top questions" in it might also be over-the-top for these second-year high school trainees.

Xu Xingli finished the selection and filling in the blanks like this, and then tangled up the final additional questions.

If the previous questions are all difficult, the additional questions may be even more difficult.

"Collect the papers." Lao Yu collected everyone's test papers expressionlessly, "Xiao Jiang, take them to the library."

The teaching assistant Xiao Jiang answered "Yes", and then led the group of distraught students to the library with a smile.

A few high school students whispered: "This is the end? No class?"

"Let's go first."

When he arrived at the library, Xu Xingli realized that this was a joint training with the No. [-] Middle School next door. The students of No. [-] Middle School had already read books in the library for self-study.

Xiao Jiang said: "You can read the books by yourself here for a while, and after correcting the test papers, Teacher Yu will come to give you a lecture."

Xu Xingli did not rush to borrow textbooks, but directly found a book about the scope of the IMO exam.

Although she has never formally participated in IMO, she also knows that the most amazing thing about Mathematical Olympiad is that she does not need tools.

Chicken and rabbit in the same cage is a third grade Olympiad problem. If you learn equations, this kind of problem is very simple.But in the third grade of elementary school, I haven't learned equations yet, so I have to use the thinking of elementary school students to answer this question.

Compared with ordinary mathematics, Olympiad is more like encouraging students to use elementary mathematics skills to solve difficult problems.

In other words, if their training camp is to prepare for IMO, there shouldn't be so many super-level questions at all.

Yun Yan handed her a copy of "Putnam Competition Questions Collection" and said, "This is it."

Xu Xingli opened the catalog and saw that the special exercises included: calculus, linear algebra, graph theory...

Xu Xingli was speechless for a moment: "Did we go to the wrong training team?"

Yun Yan: "It's not wrong. I want to select people who can participate in Putnam, and give others a chance by the way. I hope those who want to retreat will give up as soon as possible. Kill three birds with one stone."

Xu Xingli simply searched for books based on the scope of the corresponding exam and studied by herself. She guessed that she would encounter these questions in the future. If she wanted to take the first place in the training team, she must not miss these knowledge points.

In the office, Lao Bai, the teacher leading the No. [-] Middle School, looked at the test paper and sighed quietly: "The students in our school are all filled up, and it is tiring to correct. Unlike your students, I guess the big questions are empty?"

Lao Yu ignored his showing off.

Lao Bai continued to show off: "Many students in our school have written additional questions. Although they haven't finished writing, the idea is correct."

Old Yu: "One of our students has finished writing, and it's right."

Lao Bai was shocked: "I've never heard that you have such a powerful person. Could it be that Xu Xingli? How many points did she get in the test?"

Old Yu Momo, Xu Xingli didn't have time to finish writing the additional questions, but his thinking was right.

It was Yun Yan who really wrote the additional questions.

But he couldn't show it off. After all, Yun Yan only wrote additional questions, and the other questions in front were blank.

How many points?He gets as many points as there are additional questions.

Lao Yu's face was grim, but lasagna tears flowed in his heart, why didn't he finish writing?

Lao Bai found out Yun Yan's test paper by himself, and remained silent.

The problem-solving process was so beautiful that I couldn't find any point deduction points at all, but I was so arrogant that I only wrote additional questions.

Lao Bai asked, "Where's Xu Xingli's? Let me see."

Lao Yu handed him Xu Xingli's test papers that had just been graded. Everything was right, and the super-class ones were also trying their best to get fooled. It could be seen that she had never learned these things, but the general idea was fine, she was a genius .

Lao Bai sighed: "Where did you all find these little geniuses?"

All the math papers for the joint exams of the two schools were written by Lao Bai, including this exam.

There are more hard-working students in their school. He just mentioned Putnam, and many students have learned the relevant content by themselves, so the test results this time are still better than those in the attached high school.

It can be seen that many students in the attached middle school were beaten into a daze, and they are probably crying in the library right now.

But there were actually two demon talents in the attached middle school.

Lao Bai shook his head. Anyway, the two of them will not participate in this year's mathematics league, and there is no mathematics competition worthy of their participation in the country, which will not affect the first prize.

It will be difficult next year.

After being notified by the teacher, Assistant Professor Xiao Jiang took the students of the two teams to the lecture theater next to the library of the attached high school.

The teachers on both sides began to distribute the test papers one by one, as if they wanted to make the students of the two schools compete, so they deliberately included the school name when they read the name.

"No. 56 middle school, Zhao Ziyou, [-] points."

"Affiliated Middle School, Zeng Qiang, 67 points."

"No.79 Middle School, Liu Rui, [-] points."

"Affiliated middle school, Xu Xingli, 77 points."

……

The full score is [-] points, and the additional questions are [-] points. No one has a score higher than [-] points.

"Affiliated middle school, Yun Yan, 10 points."

The students were in an uproar, this is the lowest score today.

Lao Bai taught them: "What to look at, don't be too happy too early, he only wrote additional questions, and the additional questions are only ten points, so he is ten points."

There was an uproar in the class again, this time there were more gasps and "wow".

Xu Xingli looked at the test paper and realized that he still got a few questions right.

After the two teachers handed out the papers, Lao Bai held a list of data and said, "You guys will give the papers today."

I have to say that the attached middle school is rich. The multiple-choice questions are not only machine-scanned, but also can quickly give data, judge the scoring rate of each question, and the correct list of each question.

I don't want them to be one of them, and now they still use the ancient method of burning the answer sheets to change the multiple choice questions.Use a lighter to burn a hole in the correct answer every time, and then cover the sample card with the hole on the student's answer sheet. Which hole is white proves that the student is wrong in this question-if you burn a wrong one, you have to repeat it. Come on, the math teacher is okay, but the English teacher is especially tired.

Xu Xingli never expected that she would be called on the second question.

She said truthfully: "I don't know how to do this question, just guessing."

Lao Bai raised his eyebrows: "Where can't it be?"

Xu Xingli: "Matrix, I can't understand it, it's beyond the outline."

Lao Bai asked, "Then how do you know it's a matrix?"

Xu Xingli told the truth: "I saw it in the library just now, but I haven't understood it yet, so I won't. You have to talk to someone else."

Lao Bai laughed: "This set of questions does have a lot of over-the-top questions. Is there anyone who volunteers to show himself?"

The whole class was silent, no one answered.

Lao Bai: "No way? The second question is all correct?"

Liu Rui from No. [-] Middle School raised her hand and replied, "I'm not fooled, but I don't know how to tell them."

Lao Bai smiled and said, "Okay, let's study by ourselves after class, and go home after school when it's time, and see if anyone can explain this paper tomorrow."

The students in the intensive training class were collectively dumbfounded, they didn't expect the teacher to be so... capricious.

Xu Xingli collected his things on the spot and left the lecture theater to go to the library.

Yun Yan also followed.

The other students who were in a daze also trotted to the library as if they had just woken up from a dream.

Xu Xingli asked Yun Yan for help: "Do you know all these questions?"

Yun Yan shook her head: "No, it's too high for me. Do you want to talk about the paper?"

Xu Xingli responded softly, found a discrete mathematics textbook and began to study by himself.

Yun Yan was curious: "Why?"

Xu Xingli: "If I can speak, it will prove that I am the first in the class. I like to be the first."

If everyone's start is similar now, then the competition is the temporary learning ability.

Yun Yan didn't speak, but lowered her head and began to write.

After a while, Yun Yan got up to borrow a book and put it next to her.

Xu Xingli was taken aback for a moment before he noticed that Yun Yan handed his test paper to her at some point.

He didn't write the answers, but he wrote down the knowledge points used in each question, and he is still helping her find books one by one.

It is impossible to learn so many super-syllabus courses in one day, so we can only learn the knowledge points that will be used tomorrow in a targeted manner.

Xu Xingli said thank you, and dived into the ocean of knowledge again.

Someone walked up to her and knocked on the table. She looked up and saw that it was Liu Rui from No. [-] Middle School.

She asked: "What's the matter?"

Liu Rui came to inquire about her details: "How many questions are you confused?"

Xu Xingli raised his head, his gaze was firm: "It doesn't matter, by tomorrow, all the questions on this test paper are within my ability."

Liu Rui sneered: "You're a little crazy."

"It's not a little bit, it's very." Xu Xingli smiled flamboyantly, bowed his head to study again, and didn't care about Liu Rui's next reaction at all.