Xueba, I beg you to go and escort him quickly!

"what……"

Xu Heng, who had just woken up, yawned again.

The classmates around him were replaced by unfamiliar ones, so he could only sleep.

If it was the group leader, Luo Jianing and the others, they would still be able to chat occasionally.

As for the group leader, Luo Jianing and the others, they started to be cruel.

"Tomorrow, it must be early! Sit in the last row! Wait for Xu Heng to come!"

PS: Thanks to [tail number 3503] [Yue-Jun] [Xiuyu] for their support!Thank you! .

Chapter 200

Can make everyone unexpected is.

When they entered the class half an hour earlier, the last one excluded Xu Heng's old seat, and all the seats were full.

Feng Hechuan, "A little earlier tomorrow!"

Another ten minutes earlier, but the result is still the same!

Feng Hechuan, "How early are you guys!"

"You guys are too self-disciplined! Don't you all sleep?"

"Aren't you afraid that you will sleep in the classroom?"

Anyway, for many days afterwards, Feng Hechuan, the group leader, and Luo Jianing never spent time with Xu Heng again.

"These guys are terrifying! God..."

"*%￥###￥..."

"Group leader, I feel that we should really work hard!"

"Work hard? Do you try to get up early, or study...?"

Feng Hechuan had black lines on his face, "What do you think?"

The group leader smiled, "Let's study! Try to get a good grade in the Mathematical Olympiad."

Feng Hechuan frowned, a little reluctantly.

"Well, I've been thinking about some issues these days!"

Lord,"?"

"Let's talk about it during recess!"

"Ring Ling Ling..."

When the bell rang for the end of get out of class, Feng Hechuan and others came to Xu Heng's side.

Feng Hechuan, "Recently, I've been thinking that Xu Heng's Mathematical Olympiad questions are so difficult, what if the International Mathematical Olympiad is very easy..."

Everyone's heart skipped a beat!

Dong Fangyuan also frowned, "What do you mean, I hope classmate Xu Heng will give us some questions, so we can simulate it?"

Feng Hechuan immediately shook his head, "No, no! I just want to ask, will the International Mathematical Olympiad be more difficult than Xu Heng's questions?"

Everyone looked at each other, and finally focused on Xu Heng.

But at this moment, Xu Heng was lying on the table and sleeping soundly.

Dong Fangyuan, "Ah..."

"I'll ask when he wakes up."

Feng Hechuan, "Professor Zhu always said that Xu Heng's questions were difficult and difficult, so I wanted to compare them, but I checked online, and I found that there are too few questions about the International Mathematical Olympiad! Very few."

But some people said, "It's hard to say! If it's really that simple, how could we count down every few years..."

Everyone was silent for a while.

after class.

Xu Heng woke up slowly.

Dong Fangyuan turned his head and whispered to Xu Heng, "Student Xu Heng, how do you think your questions compare with the International Mathematical Olympiad?"

Geek!

Xu Heng was taken aback.

After he and Dong Fangyuan became the same table, after so many days, Dong Fang 007yuan listened carefully in class and never said a word to himself.

Today is truly unprecedented!

Xu Heng's eyes widened, "You, what did you say?"

Dong Fangyuan whispered, "We are all very curious, is your question difficult, or the International Mathematical Olympiad group's difficult question!"

Xu Heng understood everything this time.

He frowned, "What do you mean? Dig a hole for me?"

"This is Feng and Chuan Feng's whim. I don't know why he thought of this, but personally, I haven't panicked enough to ask you for help."

Done.

Dong Fangyuan looked like a blackboard, and became serious again.

Xu Heng thought about these words.

He couldn't help smiling.

really interesting……

Look at the blackboard.

The professor is presenting a question:

已知xy+x+y=71，x2y+xy2=880，x、y为正整数。求x2+y2。

Wang Mengyao on the other side rarely looked up at the question when she saw Xu Heng.

Asked, "Why, were you moved by Dong Fangyuan's words?"

"The topics taught by the professor on the stand are very conservative, but the National Mathematical Olympiad changes every year, and we will always be one step behind..."

Xu Heng understood what Wang Mengyao meant.

"But this is the basis for steady progress. Professors have many things to consider."

"We have 100 people, none of them will give up."

"However... these questions are really too simple, and there is no difficulty at all."

"Well, what's the point of asking everyone to give the process and calculation with such fanfare, isn't it just filling in the blanks?"

Wang Mengyao was speechless.

What she said was conservative, but it was not simple...

But it's not so simple that it can be calculated by mouth!

!!!

Wang Mengyao stared at Xu Heng with wide eyes.

Xu Heng, "???"

Reasonably.

You have seen my ability, shouldn't you make such a fuss?

what happened?

Wang Mengyao pushed a question beside her to Xu Heng.

"How about you look at this question?"

设f（x）是5次多项式，x=-1是5次方程f（x）+1=0的3重根，x=1是5次方程f（x）-1=0的3重根，求f（x）。

Xu Heng looked at this question, and it took less than a minute.

“这个多项式为(3/8)x(5次方)-（5/4）x3+（15/8）x，有什么问题吗？”

"You can't ask such a simple question, do you want to ask me?"

"What are you testing me for?"

Wang Mengyao had goose bumps all over her body.

"Your verbal calculation ability is too strong!!!"

"Are you sure you don't have a supercomputer in your head?!"

Xu Heng shrugged and smiled.

Wang Mengyao couldn't concentrate the whole class.

The same is true for listening to lectures and answering questions.

The impact Xu Heng gave her was too great.

And Xu Heng looked at his sign.

Sign in again to get rewards...

Really looking forward to getting some rewards.

"Forget it... before that, let's sleep for a while..."

"what!"

After yawning, Xu Heng fell asleep again.

When he woke up, Feng Hechuan and others strongly demanded.

"Brother Xu Heng, you should pay attention to your study at night!"

"The game is getting closer and closer, we want to consolidate and consolidate, and... you can help us open our eyes! Let us see the world!"

Everyone looked forward to it.

Especially the group leaders.

They all regard themselves as absolute idols.

Xu Heng was rejected by no one.

"Okay! But it depends on whether everyone is willing..."

The voice did not fall.

"I would like to!"

The students in the whole classroom are excited.

There are also DNA and some individuals who are not gregarious.

"cut……"

But this "cutting" didn't take long. In the evening self-study, he also stared at Xu Heng's questions, dumbfounded.

topic:

一个猎人和一直隐形的兔子在欧氏平面上玩一个游戏。一直兔子的起始位置A0与猎人的起始位置B0重合。在游戏进行n-1会和后，兔子位于点A（n-1），而猎人位于点B（n-1）。

In the nth meeting, the following events occur in sequence:

(1) The rabbit moved to point An in an invisible way, so that the distance between point A(n-1) and An happened to be 1;

(2) A rated positioning device feeds back a point Pn to the hunter, and the only device that can guarantee that the distance between the point Pn and An is at most 1 like the hunter;

(3) The hunter moves to point Bn in a visible way such that the distance between point B(n-1) and Bn happens to be 1.

Ask: No matter how the rabbit moves, and no matter what points are fed back by the positioning device, the hunter can always choose its moving mode appropriately, so that after 10 (9th power) rounds, he can ensure that the distance between him and the rabbit is at most 100 ?

This is completely different from the questions given by the professors these days. Xu Heng completed a question through "Hunter and Rabbit" very vividly.