"There's something in this year's College Mathematics Competition... Who is the one who created this problem?"

Office of the president of the Academy of mathematics.

Looking at the formula written on the blackboard, Wang Shuangquan touched the Hu residue on his chin with his right hand, and a dignified look appeared in his eyes.

Next to him is Professor Li Xuesong from the Department of mathematics, a leading figure in pure mathematics in China. He is also one of the examiners of the national undergraduate mathematics competition in early September.

"It's like Professor Liu Shoufeng from Xia Guo Institute of mathematics."

"It's the old man who wrote the question..." Wang Shuangquan's face showed a sudden expression, nodded and said, "no wonder..."

Mathematics is the foundation of science, and Xia state is based on science and technology, and attaches great importance to mathematics. Every year, National College Students' mathematics competition is held, which is mainly for students majoring in mathematics. The winners are expected to directly enter the national key research units.

Usually, in order to open the score, the last big problem is often put forward by the professor of Xia Guo Institute of mathematics.

But no one thought that the last big question of this year would be done by no one in the whole examination committee.

Even among these people, including Professor Liu Shoufeng himself.

As a member of the main examination committee, Professor Li Xuesong still remembers how the old man played tricks with him innocently when he found him——

"I didn't think that this question would be so difficult. At that time, it suddenly occurred to me that it seemed very interesting and I wrote it on the test paper."

Now it seems that this question is quite beautiful.

Maybe it will become a mathematical guess.

Liu Shoufeng himself was happy and gave up, but he suffered from the main test committee of the competition.

In this way, half a week has passed since the end of the exam, and the answer to this question is still a mystery

Seeing that President Wang Shuangquan didn't respond for a long time, Professor Li Xuesong tentatively asked.

"What do you think of this problem?"

"I don't have a good idea yet, but my intuition tells me that the answer shouldn't be very difficult?" After thinking for a moment, Wang Shuangquan shook his head and said, "let me think for another two days... What about Yanjing Institute of mathematics?"

Yanjing Institute of mathematics is another big mathematical research institution in Xia state. Different from Xia Institute of mathematics which focuses on Applied Mathematics, Yanjing Institute of mathematics mainly studies pure mathematics.

Obviously, it is better for experts to study this kind of number theory.

"The question has just been sent to them. I think we are having a seminar at the moment."

President Wang nodded and touched his chin.

"That should be steady."

"Well, I thought that my ability had fallen behind. I didn't expect that even you could not think of it. It seems that the problem lies in the problem itself."

Looking at Professor Li Xuesong laughing there, President Wang was embarrassed and coughed.

"What do you mean, I can't think of it... Didn't you just get it to me?"

"Ha ha, I don't care. In a word, I'm in balance!" Li Xuesong laughed and waved his hand, "stop pulling. I'm going to class. I'll still have senior math for a while, and there are two classes of homework waiting for me."

"Homework? You're not going to take it as an assignment, are you

"It's a question of thinking. I didn't ask them to do it. What they can do is what they can do."

Looking at this unreasonable old thing, Wang Shuangquan said with a smile: "you are not bullying people."

Can have this ability, already took the National Mathematics Competition grade one report card to recommend the Yanda. Although Jiangcheng university is also the top 10 of Xia and even the world, its resources are still a little less than those of Yanjing.

"Bullying? Oh, I don't think it's enough! These freshmen are just like ducks in the mountains. They have no discipline at all! Today's students, their mental outlook is far worse than that of our previous years. It's really worse from generation to generation! "

As he spoke, Li Xuesong shook his head.

Looking at his old friend, President Wang said with a dry cough.

"Each generation has its own way of life. Don't always use the old calendar to ask the present students. Do you want your grandson to live in the old calendar or in the new era

"Can that be the same? How old is my grandson? "After all, but Li Xuesong, the leader, muttered and digged off the topic." it's almost time. I'll go back first. "

The president of the court nodded with a smile.

"Go ahead, go ahead."

This question is very interesting. He also wants to think quietly for a while.

Maybe we can solve it?

Although it seems quite challenging

……

Ding Ding Ding——

"Hiss... Why hasn't Hao Yun come yet?"

Looking at Lao Li, who had stepped on the bell and entered the classroom, Zheng Xueqian looked around anxiously and whispered to Liang Ziyuan, who was sitting beside him, "this guy should not have slept."

He didn't worry about Hao Yunque's absence. The main reason was that he helped to occupy the position too far ahead and left a book there in embarrassment. In particular, this kind of small class with only two classes is more eye-catching.

Liang Ziyuan: "maybe."

"Damn it, don't say it."

Zheng Xueqian whispered make complaints about the book that had been put on the table before he received the white eye.

"Be quiet in class."

Li Xuesong, who knocked on the blackboard and went up to the platform, left his advanced mathematics textbook on the platform, with his hands behind him and the expression of a world expert on his face.

"The Committee of class 1801 accepted the assignment."

After listening to the homework, there was a groaning commotion in the classroom. Several students in the front row looked at each other, but they only saw helpless expressions in each other's eyes.

"Did you write it?"

"I didn't write it."

"It's too difficult..."

"Yes, yes, I can't write it at all!"

"I have to hand in my homework. Isn't that a thinking question..."

"It's over, it's over."

Seeing the students' reaction, Li Xuesong didn't make any expression on his face, but he laughed twice in his heart.

Can't do it?

It's a coincidence that you can do it!

He Ping, sitting in the first row, bit his thumb and looked at the three or five page manuscript on the desk. He frowned and didn't say a word.

Sitting next to him, the little fat man Zhou Xuan nervously poked his arm with a pen and asked in a low voice.

"He Shen, have you written it out yet?"

"No..."

"Damn, you can't do it?"

National high school mathematics competition province one!

Even he can't do it?!

This guy doesn't play games in his bedroom. He sits in bed all day and reads some difficult books.

However, after hearing that He Ping didn't write it out, Zhou Xuan was relieved, less nervous than before.

What did you say?

the law does not punish numerous offenders!

If one or two people don't write it, it's the problem of one or two people. If everyone doesn't write it, it's not the problem of everyone, but the problem of this topic.

He Ping was not as optimistic as his roommate. He didn't even bother to pay attention to him. He continued to stare at the problem in the draft book and pondered over it. It was like getting into the tip of an ox horn.

No wonder

After all, how to look at this is to simple to no longer simple problem.

But the strange thing is that he has tried everything, but he can't do it!

Looking at the sad faces of the students under the stage, Li Xuesong didn't want to be too happy.

He never thought that these future code farmers could make such a problem.

Oh!

I want you grandchildren not to take Laozi's lessons seriously!

Now you know how to regret it?

However, happy to happy, the teacher's dignity or have to put a show.

The elder tried his best to squeeze out a trace of disappointment from his eyebrows. The decapitated old man, pretending to be tolerant, comforted everyone.

"It doesn't matter if I can't write it. I'll pay as much as I write. At least let me see your ideas. The academic committee of class one, take it, even if you write a solution. "

After hearing this, the students who handed in their homework finally got some movement and hesitated to hand out the exercise book with only one copy in hand.

There are those who have not done their homework, is more relaxed, simply take the homework to copy the problem again, and then in the blank position to write a solution.

Looking at the homework collected in a short time, Professor Li Xuesong laughed in his heart, but his mouth was shaking his head.

"One or two of you didn't listen carefully, and some of you were late and left early. I thought you all learned it. I didn't expect that there was no one who could do such a simple problem. "

"Students of this class, I really don't know how you learned in high school!"

Hearing this, all the students in the class are ashamed.

To tell you the truth, those who can sit in this classroom, strictly speaking, don't have a real sense of scum. Not to mention the overseas friends recruited by the international class, but at least in mathematics and chemistry, none of them has a low score.

Therefore, there is no doubt that this kind of soul torture is a little heartbreaking for them.

Especially for a Xueba who once won the provincial first prize and almost got into shuimuyan University, it was even more painful for him to bite his thumb off.

Why can't I write it out???

It's impossible!

Seeing that Lao Li on the platform had opened the cover of the advanced mathematics textbook, he didn't intend to talk about the problem that he couldn't understand for half a week, He Ping knew he couldn't wait any longer, and stood up from his chair.

"Teacher, I want to know the answer to that question!"

Zhou Xuan, who is sitting next to him, is startled by his roommate's action, and quickly puts his mobile phone into the drawer.

Wang Zixuan and Yuan Gaofei are the same, looking at He Ping in a daze. They don't know what he's doing.

Coincidentally, Li Xuesong on the platform is the same.

Hearing this question, the expression on his face suddenly froze.

"A, the answer? Hehe, I can't do such a simple question. Fortunately, I want to ask you the answer. "In the end, Jiang is still hot. Li Xuesong was caught off guard and showed some diffidence. But he soon covered up the past with a serious face and said," I'll give you the answer later. You'll think about it again. "

As soon as he heard that he had to wait a few days for the answer to be announced, He Ping's face, which had no mood fluctuation, suddenly twisted a trace of pain for the first time.

"Teacher! Please! Tell me about it. "

"Well, I'll talk about it. I'll leave you some time to think about it in two days. In fact, this question is just for you. It's not the focus of our advanced mathematics class. Even if you don't know the answer -- "

"I beg you! I haven't slept well for half a week... "

Looking at He Ping, who suddenly hugs his head in pain, the Zhou Xuan people sitting next to him are all silly.

what the fuck?

Is this learning crazy?

There was a commotion in the classroom.

Many people began to talk in a confused way.

"Who is that man?"

"It's said that the number one student in class one won the first place in the province!"

"Damn it! How to read a software major

"Who knows, no matter what people read, don't you think it's ridiculous to throw us questions that can't be saved?"

"It turns out that people can really be driven crazy by mathematics..."

It's not only a few people in 402 dormitory who are silly, but also Li Xuesong who is standing on the platform.

This guy

Isn't it exciting?

In the heart also some hair timid, this decapitated old fellow is also the first time to see this situation, flurried to want to switch the topic.

"That classmate, I understand that you have a strong thirst for knowledge, but you sit down first. We'll have class soon. If you have any problems, we'll talk about them after class. By the way, I forgot to call the roll just now. Now I'll call the roll first... "

He Ping was still reluctant to sit down because of his miserable face.

Obviously, this guy is stimulated. Now he's not only fighting with himself, but also the whole class.

Just when Li Xuesong opened the list in a hurry, a hurry came from outside the corridor.

Then a crack opened in the back door, and a figure with a shoulder bag was quietly trying to slip in from the outside.

Of course, Li Xuesong couldn't miss such an obvious big black mouse.

If he turns a blind eye at ordinary times, the university mainly relies on self-consciousness. Which teacher might stare at him as a father and a mother like high school?

But who wants to be so unlucky today?

Hit the muzzle!

Li Xuesong, who was worried that he had no chance to find a way down, suddenly turned his face into a chopping board and took out a different momentum. He cut meat and cut vegetables and gave a big drink.

"The late one behind."

"Stand up to me!"

The sound, like a trumpet.

After two breaths, Hao Yun pulled back his chair and was about to sit down. He almost didn't catch a breath, so he was surrounded