Xu Mang was quite unlucky, he originally thought that there would be a big group behind him, not to mention thirty professors, at least five associate professors, right?

Outcome...

The commander of the light pole, the dignified Zhejiang Provincial Olympiad Competition, there is only one person who asks the question.

According to Mr. Teng, many people have decided not to participate after knowing that you are the one who made the question, and it is useless to go in by yourself anyway... It's really sad to hear, and tears are shed when you hear it.

In a temporary office,

Xu Mang lay on the chair, then crossed Erlang's legs, with a bottle of iced tea beside him, and a pleasant expression on his face.

Ten days to go,

Don't panic!

"Hello?"

"Have you returned to the magic capital?" Xu Mang received a call from Yang Xiaoman.

"I'll go back tomorrow. ”

"Are you already at Jiang University?" Yang Xiaoman said: "Alas... I've met a lot of people, and everybody has complimented us, but I think... There is some difficulty in conscience, but in fact, these credits are yours. ”

"It doesn't matter. ”

Xu Mang stretched his waist and said silently: "I'll hang up first... It's going to work. ”

"Hmm..."

"Kiss me!" Yang Xiaoman said crookedly.

Xu Mang was stunned for a moment, and then silently pressed the hang up button... Look at the interrupted call interface and smile a little.

Kiss the yarn!

Do you have what it takes to beat me?!

Job!

First things first... It is the topic of the individual competition.

Since it is an individual competition, it is an occasion to show personal strength.

Xu Mang bit the tip of the pen, his brows have been locked, according to international practice, the first question is a score question, and the contestant is often given a little point, so that he will not lose too embarrassed, but since he wants to make a change, he needs to change the difficulty.

Send a sub-question?

Why is the first question a grading question?

Which bastard prescribes?

Xu Mang thought about it seriously, there are not too many questions, but each question is a proposition.

Question 1,

Xu Mang decided to use geometry directly!

In the convex quadrilateral ABCD, AB· CD=BC· DA, point X is inside the quadrilateral ABCD, and the angle XAB = angle XCD, angle XBC = angle XDA.

Proof: Angular BXA + Angular DXC = Flat Angle

"Hey, hey..."

"Yes, yes!" Xu Mang finished writing the first question, and even laughed at himself, this is the devil!

"Ugh..."

"Xu Mang?"

"You are so handsome, and you are so smart, how do you let other young men in the world live?" Xu Mang sighed, the word 'sad' written all over his face.

Followed by

Xu Mang began to write the second question.

A primitive lattice is an ordered integer pair (x,y), where the greatest common divisor of x and y is 1, given a finite set of primitive lattice points, it is proved that there is a positive integer n and integers a1, a2, a3... aN, such that for each of the S(x,y), holds: a0x^n+a1x^n-1·y+a2x^n-2·y^2+...+an-1^n·xy^n-1+an·y^n=1

(°ー°〃) in contemplation~

(‵▽′)ψ hehehehe~

Xu Mangle is happy,

This kind of problem can basically be called an anti-human problem, if you don't have strong thinking ability, and you don't understand the concept of mathematical formulas, then you will definitely go to zero, and you don't have to look back.

Talented?

I'm sorry

Do two questions at most!

Xu Mang is absolutely confident in this, on these two topics, Xu Mang is according to the last two questions of the just-concluded International Mathematics Competition as an example, to carry out various analysis and research, it is said that this time the International Mathematics Competition, the last two questions hung up a lot of people.

More than 100 countries, more than 500 people, the grapevine said that only a dozen or so people did all the right, and about 30 people did a question right.

Of course

The difficulty given by Xu Mang is not at the level of the International Mathematics Competition, so it has been reduced slightly.

It's really embarrassing to be embarrassed.

...

"Old Teng?"

"Let Xu Mang ask the question... This is a bit inappropriate, isn't it?" A professor found the head of the mathematics department of Jiang University and said with a worried face: "Once this guy lets himself go, the consequences will be disastrous!"

"Don't panic!"

"Zhejiang Province is so big, I believe there will always be a second Xu Mang. Teacher Teng said: "This competition should be able to see. ”

Facing the optimistic Teacher Teng, the professor smiled bitterly, the second Xu Mang?

"Lao Teng!"

"x^n + y^n = z^n", this theorem was proposed in 1637, but it was only proved in 1995. The professor said, "Where is the genius in these three hundred years?"

The Riemann conjecture, which was put forward in 1859, has not yet been solved. The professor reluctantly said: "Let's talk about physics again, modern physics is still based on the framework proposed a hundred years ago. ”

"Don't be superstitious about genius!"

"Genius is hard to come by. The professor said: "Hurry up and call Xu Mang, this bastard, back, otherwise you really have to go out and do something!"

“...”

Teng said that he thought for a moment and silently took out his mobile phone.

"Hello?"

"Xu Mang, come to my office. Teacher Teng said.

moment

Xu Mang, who was excited, came to the office, just now he had completed nearly half of the competition papers for the individual competition, all of which were propositions.

“...”

“...”

Teacher Teng and the professor glanced at each other, a little panicked in their hearts, this is the expression of not being arrested after doing something bad.

"Xu Mang?"

"Look at your happy face, isn't it... Thinking about the topic of the Olympiad Mathematics Competition?" asked Mr. Teng.

"That's right!"

"I had a holistic approach. Xu Mang smiled and said, "This idea is great!"

“...”

Mr. Teng didn't know what to do for a while, and his colleague's words were not unreasonable, he really didn't think it through, and he shouldn't leave all the tasks to Xu Mang to complete.

"What..."

"Just now I thought about it, it's a little inappropriate to let you take on such a heavy responsibility alone..."Teacher Teng said, "Or... The competition papers for the individual and team competitions are up to you, and the papers for the challenge competitions... Let's get a professor in the math department done?"

"What do you think?" asked Mr. Teng.

Individual and team competitions?

This can be there!

Xu Mang had a little headache when he thought of the challenge, and he had to come up with forty questions, and his body was almost hollowed out.

"Good!"

"I'm in charge of the individual and team competitions, the challenge competitions... Find someone else. Xu Mang nodded and said seriously: "Anyway, I can help with the difficulty." ”

“？？？”

“？？？”

Difficulty help?

That's a bit of a math department, right?

At this point,

The professor said, "I said Xu Mang... We're math majors! If we make the problem more difficult, it's pretty scary!"

Xu Mang shrank his head and said cautiously, "Professor Wang, I want to experience it!"

“...”

“...”

One is the head of the mathematics department of Jiang University, and the other is a professor of the mathematics department of Jiang University, and the two don't know what to do at this time.

Unless he proves the Riemann conjecture, the Hodge conjecture, the BSD conjecture... This kind of world-class math problem, ordinary math problem, even if the Olympics are added in front, it is estimated that it will be difficult to defeat Xu Mang.

"You're not in our scope!" the professor said solemnly, "Anyone else is coming!"

However...

Unexpectedly,

Xu Mang is a fine man.

"This year's PUMaC champion, Yang Xiaoman from the Department of Economics of Fuda University, is my girlfriend... She can also challenge the so-called problems of the mathematics department of Jiang University. Xu Mang said seriously: "Professor... We, the Black Wind Shuangsha, accept Jiang Da's challenge at any time!"

This...

How did these two demons come together?

This professor is quite helpless, this Yang Xiaoman has heard of it, unlike Xu Mang, who is not human, Yang Xiaoman is almost the limit state of a student, but despite this, it is also an invincible existence among students.

"I said, why do you kid like to lift the bar so much?" said the professor, "Forget it, you're our difficulty consultant, right?"

"Yes!"

"It would have been nice to have done this earlier!" Xu Mang said with a grin: "Professor, we have made up our minds, I am your difficulty consultant." ”

...

Two days later,

Xu Mang's temporary office,

The professional volume of the individual competition of the Zhejiang Provincial Olympiad was completed, although it was all completed the day before yesterday, but Xu Mang made some adjustments to the first edition of the paper to meet the requirements.

Of course

Minor adjustments will still be made in the later stage, such as adjusting the difficulty again, although the difficulty has been adjusted once, it is still difficult to explode on the spot.

"Ugh..."

"It seems that the so-called scoring questions are not prescribed by anyone, but forced. Xu Mang sighed, if the difficulty is reduced, it will lose the charm of this set of special papers for individual competitions.

Never mind!

Let the high school students in Zhejiang Province also experience how helpless they are when faced with the problems of world-class competitions.

Followed by

Xu Mang began to work on the papers of the team competition.

Compared to individual papers, the number of questions is reduced, and the five sets of papers need to be divided according to difficulty.

With the difference in difficulty, the leading teachers can formulate reasonable players, which is a game of psychology and strength.

According to common sense,

Generally, the first set of papers is simple, and then the difficulty is increased in a stepwise manner, and then the teacher arranges tactics.

At this point,

Xu Mang remembered that in high school, the tactics tailored for himself were called Xu Mang's game theory.

Not to mention,

High school math teacher, Mr. Liang is simply a tactical genius, this method can be imagined, let other players according to their own strength, crush in a ladder, and then the most difficult fight, even if you lose, it's okay, the score in front can offset the defeat in the back.

If you win... That's a win.

Of course

I have never let Mr. Liang down.

It's better to abide by the rules, the game of psychology and strength is also a highlight of the game.

Xu Mang just picked up the pen and put it down in less than three seconds, he decided to go and see how the papers of the challenge were completed first, and play the role of his advisor as a difficulty consultant.

moment

Xu Mang came to a certain office.

Push the door in,

I saw Professor Wang and the two students beside him.

"Hello Professor Wang!"

"I'm going to see how the competition papers for the challenge are done, and by the way, I want to find out. Xu Mang walked over with a smile.

The professor was quite helpless, but there was nothing he could do, who allowed himself to promise him to become the so-called difficulty consultant.

however

The two students next to the professor didn't know Xu Mang, and when they saw the appearance of his students, they were a little curious.

"Huh?"

"Professor!"

"This question is very simple!" Xu Mang read a few questions casually, and said seriously: "I will know how to solve the problem by scanning it slightly with the whites of my eyes." ”

Nonsense!

That's you!

The professor was speechless and was about to speak when he was interrupted by his own student.

"Why don't you do two questions?" one student reminded 'kindly'.

......