After hearing what his student said, the professor frowned and was about to speak to stop him, but found that Xu Mang had already picked up the pen and was about to take action on the topic.

"What are you doing?" the professor asked hurriedly.

"Do the questions!" Xu Mang was stunned for a moment: "He asked me to do it."

""

"I'm kidding with you!" The professor said with a dark face: "Don't mess with me, kid!"

"oh"

Xu Mang put down the pen in his hand awkwardly and said helplessly: "But this difficulty is indeed not enough to let yourself go. Teach us that we need to increase the difficulty."

“???”

“???”

at this time,

The two students present looked confused. Who is this guy?

Why are you so familiar with the professor? And the professor seems to have no choice but to deal with this guy.

This is a bit awesome,

It is probably not as simple as a student who can reach this level.

It should be a student with a background

"Xu Mang!"

"You can't use your standards to measure others." The professor said seriously: "If you use your standards to set questions, you will basically have zero points."

Well?

Xu Mang?

The professor said he was Xu Mang?

The two students looked a little surprised. They had heard of the name Xu Mang.

"Xu Mang?"

"Is the legendary Xu Mang you?" Another student looked at Xu Mang and asked curiously: "I have read your paper, and it's really awesome!"

"That's natural!"

"After all, I am the spokesperson for awesome." Xu Mang said with a smile, "I am born awesome!"

""

""

""

Someone said this,

It sounds funny because it's a joke in itself.

But Xu Mang

It sounds so angry!

Because he tells the truth.

"Xu Mang is almost done." The professor said helplessly: "You can go back."

"No!"

"I came here to guide the work. The professor asked me to guide you. Your student is here too." Xu Mang made a flawed mind and said with a smile: "I will just ask a question. This question is my latest understanding. The difficulty is basically close to the international competition. Should I experience the real difficulty?"

The coach thought for a moment, looked at his student, and asked, "What do you think?"

actually,

These two students really wanted to challenge Xu Mang's problem, especially when they heard that it was an international competition-level topic, their desire to challenge became stronger.

"good!"

“So I can.”

After receiving a response, the professor said to Xu Mang: "Then try it."

moment,

Xu Mang took a piece of white paper and began to give a question to the two challengers.

Suppose p=a1a2ak is a convex polygon on a plane, the vertical and horizontal coordinates of a1a2 and ak are both integers, and they are all on a circle, the area of ​​p is denoted s, and let n be a positive or odd number, and the square of each side length satisfying p is an integer that is integerized by n.

Proof: 2s is an integer and is divisible by n.

Finish!

Xu Mang raised his head with a smile, and then saw the cute look of the two of them, like the one who was so far away.

"Start it?"

"Give you two hours." Xu Mang said: "There should be no problem. This is the question for high school students."

""

""

Is this a high school student question?

Do you believe it if you beat it to death?

The two of them looked at Xu Mang with a smile on their faces, and were instantly filled with helpless anger.

As a top student in the Department of Mathematics of Jiangda University, I didn’t know how to face this problem for a while.

Two hours

Maybe, it's just that it's possible. If you think wrong, it won't be solved in two hours.

at this time,

After taking a look at Xu Mang's question, the professor asked Xu Mang: "Xu Mang, are the questions you asked so inhumane?"

Xu Mang: Embarrassing

What is inhumanity?

Why is there no humanity?

This topic is full of love for the contestants at first glance!

This difficulty, this creativity, and this thinking are all about love!

final,

These two students from the Mathematics Department of Jiangda did not do Xu Mang’s non-human questions. Of course, they could do it, but it took a lot of time. At present, the questions in the Mathematical Olympiad Competition in Zhejiang Province are very tight, so they gave up.

And Xu Mang

Achieve his goal.

Appropriateness adds some difficulty in the challenge.

"Is it appropriate?" a student asked curiously: "Is it too difficult for Xu Mang?"

"It's not difficult!"

"Do you find it difficult?" Xu Mang asked.

"It's not difficult, don't forget that this is a group of high school students!" said the student: "Your topic has already involved college."

Xu Mang nodded and said silently: "These contestants are elites in Zhejiang Province. It is not an exaggeration to describe them as geniuses? Since they are so-called geniuses, there is no problem, because using the knowledge points in high school can be completely solved, but they are a little troublesome."

This student agrees with Xu Mang's point of view. Although it involves university knowledge, high school knowledge can be used to solve problems, and there is no problem, but there will be a little cumbersome in terms of process and verification.

for a long time,

Xu Mang was almost familiar with these two students. Only then did he realize that the two were junior students, one was Qu Wenzhong and the other was Ni Jiawei.

End at noon,

The three of them went to the cafeteria together.

"well?"

"Didn't you take the postgraduate entrance examination?" Xu Mang was stunned for a moment and asked in surprise: "Why don't you take the postgraduate entrance examination?"

"There are thousands of roads in life, not just the postgraduate entrance examination." Qu Wenzhong said: "I signed a contract with a securities company a year ago. After graduating from college, I went to work in their company. The starting salary was 15,000 yuan."

""

"Where are you? Ni Jiawei." Xu Mang asked.

Ni Jiawei said: "I'm about the same, but I'm not in a financial company, I'm in a high-tech company, and I signed the contract a year ago."

"oh"

Xu Mang nodded: "It's good, the postgraduate entrance examination is just to give up one more direction for your life. Since you have a choice now, it is reasonable to give up what you should give up."
To be continued...