() Floating island, square.

After completing a "century" speech, Chen Yu felt very comfortable, and the wine also woke up, and he waved his hand: "Hair rolls, start the exam!"

"Yes!"

Dozens of professors nodded excitedly and trotted into the square, standing on the marble platform at the front in order.

"Students. Chen Yu put down his hand and commanded: "You have long noticed the number on the ground under your feet, right? In the invitation letter, there is also your number, please stand in your respective positions according to the number and start preparing for the exam." ”

With Chen Yu's encouragement just now, the students were still in a buff state, and their efficiency was also very high, and it only took two minutes to disperse in all directions, and they all found their respective positions.

As the saying goes, it's a big deal.

The same sentence has different effects in different mouths.

Chen Yu, as the most "powerful" and "status" in the world, no matter how he interprets his words, his thoughts must be profound.

Don't ask, for no other reason, this is the setting engraved in the genes of human culture, which has been around since the time of the ancient Greeks.

Once the students were standing in line, the professors began handing out test papers, cardboard, straw paper, and pens. From the first column to the last.

According to the different areas of expertise of these young students, the content of each row of the exam paper is also different. The only thing that is the same is the difficulty of surpassing imagination.

Taking off his hand armor, Chen Yu raised his wrist and looked at the time, and said loudly: "Normally, there are still ten minutes to start the exam, but efficiency is paramount, since everyone came early, let's start directly." ”

The students stood in place, holding the test papers and looking at each other, at a loss.

"What are you looking at?" Chen Yu frowned: "Answer the question." ”

"I... Shall we stand and answer?"

"You haven't experienced it, have you? Chen Yu nodded: "I just want to strip away your natural pride and remove those external interferences, just assume that you are all top students and your stability is also healthy, in such a purely standing environment, see if you are still a good student." ”

Everyone: "......"

"That's right. We're going to tear down your hardware, see through your software, and restore the T1...... No, it is to restore the essence of the written test. Chen Yu waved his hand: "The journey of scientific research is arduous and boring, and in order to allow you to adapt in advance, don't be grinding." ”

"I see. ”

Most of the students suddenly began to answer the questions seriously without hesitation.

Dozens of professors crossed the aisles, keeping an eye on the students to prevent cheating.

"Smack!"

Raising his hand, he snapped his fingers, and the gray particles suddenly turned into chairs and appeared in the square. Chen Yu shook his robe, sat down leisurely, and hooked his hand towards the front: "Professor Li, come over for a moment." ”

"Headmaster. Professor Li hurriedly ran over: "What do you have to say?"

"Do you have any left? I'll take a look. ”

"Do you want to do it too?" said Professor Li's eyes.

"Well, look at the level of your big professors. ”

"Good!"

Professor Li looked a little excited, and immediately took out a few test papers from the pocket he was carrying, and handed them to Chen Yu: "Principal, these are all sample papers, and these are the questions that the students do." ”

"Hmm. Chen Yu nodded and took it, opening the first math paper.

He believes that he is also a high school student, and after turning over from the salted fish, he can also cut the top ten in the sixth middle school, and the name of the top student is well deserved.

So since they are all top students, even if the gold content is a little lower, it's always okay to get a passing grade, right?

Thinking of this, he decisively picked up the pen and read the first question carefully.

Let r be the set of real numbers of the body, and find all the functions f:r(right arrow)r, so that for any real numbers x and y there is f(f(x)f(y))+f(x+y)=f(xy)

Chen Yu: "......"

Pushing the mask, he calmly moved to the second question.

There are 1987 beads around the circumference, and each bead is dyed twice, or red, or blue, or red, and blue. Finally, there are 1987 red dyes and 1987 blue dyes.

Chen Yu: "......"

Looking up, he looked at Professor Li, who was staring at him.

"How's it going? The difficulty is a bit easy, right?" Professor Li scratched his cheeks and was embarrassed: "There are too difficult math problems in front of us, and we are afraid that the students will not be able to beat them." If you are not satisfied, look at the back, the back is difficult. ”

Is this a neurotic question?!

Chen Yu opened his mouth, holding a sentence of "Fake" in his throat without saying it, and continued to look at the third question of "simple".

A primitive lattice is an ordered integer pair (x,y), where is the greatest common divisor of x and y?

The third question is very short, but the difficulty is ......

Silently closing the scroll, Chen Yu shook his head and handed the pen and paper to Professor Li.

"School... Headmaster, this... These snorts......"

"You're smiling?"

"No! choked!" Professor Li shook his head repeatedly: "I... I just want to ask, are you not satisfied with these questions?"

"Satisfied. Chen Yu looked at the students who were flying like a pen, and forced a smile: "I am very satisfied." I hope you can keep it up so good. ”

"But... But ......"

"Go down, let me be quiet. ”

"Okay. Professor Li held the scroll with a serious face, and muttered as he read it: "Alas, it seems that it is still too simple." ”

Chen Yu: "......"

Raising his head, Chen Yu looked at the sky expressionlessly, closed his eyes, and asked himself a question in his heart.

If there is no chrono-space-time promotion, does he come to Earth just to make up the numbers......

"I thought the topic would be difficult, but I didn't expect it to be so simple. A female student standing in the front row whispered to herself, turning the next page of the exam paper.

“......”

Chen Yu silently covered his aching chest......

......

At the same time, thousands of miles away in Jianguo, Google's headquarters.

"Dingding!"

There was a sudden knock on the door.

The president sitting on the sofa immediately got up and took the initiative to open the door, and found that a middle-aged white man was standing outside the door, and his pupils shrank suddenly: "Bo... Doctor, did you succeed?"

"Hmm. The middle-aged man pinched the old brown and yellow suit on his body and nodded heavily: "Success!"

"Yay!"

“yes！”

"Roar!"

Hearing this, the president suddenly vented his excitement in his chest regardless of his image: "yes!yes!yes!!"

The middle-aged white man couldn't help but smile as he watched the president bounce around.

After a while, the president raised his wrist and looked at the time.

February 3, 2021......

"Take me!"

"Good. ”

The two immediately walked out of the office, and under the support of two bodyguards and several assistants, they entered the special elevator, dived to the first floor of the headquarters, and took a bulletproof car through the back door to enter the warehouse.

Inside the warehouse, there are mercenaries with loaded guns and ammunition.

"Just stop here. ”

Get out of the car, stop the assistant and bodyguard from following, and the president follows the middle-aged white man into the deep alley alone.

"Here, President. ”

"Hmm. ”

In front of a heavily guarded steel gate, the president and the middle-aged white man swiped their identity verification, and the door slowly opened inside.

Cheng, the iron gate did not make any sound.

"Hmm. ”

For some reason, the president's originally excited mood suddenly turned terrifying.

In his eyes, this slowly opening iron door seemed to have become a terrifying Pandora's box, choosing people to devour......

......

(Note: That's all for today, and it will continue tomorrow.) ）