When he returned to the office, Luo Sanyang stretched. It might be because he was middle-aged. Recently, he found that his waist hurt a little!

I found an old Chinese doctor to acupuncture several times, and each time it worked for those few days, and then it relapsed.

According to the old Chinese doctor, acupuncture works, but back pain still needs physical exercise to be eradicated. Unfortunately, as a person who holds a computer to eat, he is asked to go out for exercise, just like the winter swimming in the cold winter.

"Do you have the candidate for Teacher Luo?"

The office door was opened and Teacher Zhang walked in. The two were about the same age, and they were both computer experts invited by Linjiang Academy to pay a lot of money.

"Not yet, let's see you tomorrow, where are you!"

"It's almost done, but I don't have enough confidence. In such a big class, there is only one person who can do AOS exercises!"

"One person? Then I have to find two people here!"

You are a junior student, only one of you can do AOS exercises, and even fewer sophomore students.

Luo Sanyang shook his head. Linjiang Academy's computer itself is not the top in China. Take the Shanghai Stock Exchange for example, even Jiaotong University is not as good as Jiaotong University.

I am afraid that I will also be a runner-up when participating in such an international competition this time.

After flipping through the book, Luo Sanyang looked at the small notebook and was a little dazed.

Why?

Where is my aos exercise booklet?

After a look, I still have a small exercise book for sophomore students!

...

Luo Sanyang slapped his forehead with a slap.

"What's wrong?"

Teacher Zhang asked.

Luo Sanyang looked annoyed: "I should be a little tired recently. When I gave a classmate some exercises in my sophomore year, I gave Aos' exercise booklet!"

"Hey, it's quite interesting to meet that student today. He is a freshman and has already started listening to my class. He listened with relish. The most important thing is that this guy is not from the computer department, but from the biology department!"

"Oh, is that?"

...

"Watch the game together after dinner?"

"No, I have to go home tonight!" Bai Zhou shook his head and took the exercises. Bai Zhou still attached great importance to it. After all, it was unusual for a university teacher to name the name.

Moreover, after he opened and looked at it, he found that the exercises were very difficult, which made him wonder about himself. Could it be that his level is still far behind?

So be prepared to make up your mind and make sure to brush up the exercises in the exercise booklet.

When she got home, Yang Kaiwen was not here either. Recently, she has been in the library. She went out early and came back late, which also made Bai Zhou understand the pain and fatigue of taking the postgraduate entrance examination.

Cut some fruit for yourself, the white boat plunged into the study and opened the exercise book.

A total of twenty!

Bai Zhou took a deep breath and began to focus on the first question!

At two o'clock in the middle of the night, Yang Kaiwen got up and came out in a daze to pour water for herself.

When I turned around, lights penetrated under the crack in the study door.

"As a matter of fact, no one who can succeed is taking a shortcut!"

Yang Kaiwen clenched her fists: "Try hard, struggle!"

...

"Well, it's very interesting. The mini program I gave you yesterday only had five bugs. Someone changed a number and directly exposed fifty bugs!"

Luo Sanyang stood on the podium, smiling at the whiteboard, and there were several typical examples on it.

Press the Enter key and remain motionless.

He said and glanced at the back of the classroom.

Didn't see the white boat.

Didn't come today?

Or is it because of the exercises he gave that scared people and was so scared that they were no longer interested in computers?

Not so.

"You guys, let alone satisfy the needs of customers, it's already great if you can get trapped in by bugs!"

As he was talking, Luo Sanyang saw a sneaky figure lowering his head and entering the classroom, then found a seat to sit down.

Bai Zhou kept gasping and raised his head and just met Luo Sanyang's gaze. Bai Zhou quickly lowered his head.

Overslept.

Those exercises were really too difficult, especially the last optimization. He struggled for more than three hours before he completely changed the bugs inside. Later, he fell asleep on the table.

When I opened my eyes, I looked at the time, it was 150 p.m.!

Bai Zhou was so scared that he was shocked and ran away before he had time to brush his teeth and wash his face.

I don’t know how many students were shocked along the way.

Even so, I have been in class for nearly forty minutes, after all, there is a traffic jam on the road.

Bai Zhou calmed down his emotions repeatedly, and after a while, he began to take notes carefully.

"Okay, Jinghao, come to the office to find me later!"

After class, students came out one after another. Bai Zhou took the notes and saw that Teacher Luo had also gone out, so he quickly chased after him.

Luo Sanming didn't leave. When he saw Bai Zhou coming out, he waved to him. When Bai Zhou ran to the front, he was about to speak, Bai Zhou said, "Teacher, I've finished the exercises!"

Luo Sanming was still a little embarrassed about the wrong exercises he gave yesterday. After all, as a teacher in the calculation department, he was so careless. You must know that programmers themselves should be closely linked to the word "限公".

As he expected, Bai Zhou should have run over, and then said embarrassedly that he didn't know how to do it.

He waved his hand and said it was okay, but he just gave the wrong exercise.

but……

What he never expected was that Bai Zhou said this.

"What? What did you say?"

Luo Sanming felt that he had heard it wrong, and asked again in disbelief: "Have you finished?"

Bai Zhou focused his head and scratched his head: "I tried to do it all night last night. These twenty questions were a bit difficult, especially the last one. I have been trying until today during the day, so I'm late!"

Luo Sanming opened his mouth and said anxiously: "Give me the exercise book I gave you last night!"

Bai Zhou looked confused, not knowing what Luo Sanming's expression meant, but he obediently handed the exercise book to Luo Sanming.

Luo Sanming opened the booklet and his eyes shrank.

That's right!

This is Aos' professional exercises. There are twenty questions in it, which are the most complex exercises selected by Aos every year. This is not a student's exercise, but a system analyst like him uses to make capital use.

Even Luo Sanming himself has been stuck on the 18th question.

To put it bluntly, no one can solve all the twenty difficult problems contained in this book this year.

Even on the AOS website, the 19th one has been cracked, and everyone is racking their brains for the 20th exercise.

Luo Sanming pushed the exercise book in front of Bai Zhou and pointed to the first question: "Are you sure you are solving this question?"

Bai Zhou nodded: "Yes!"

Luo Sanming said again: "Look carefully!"

Bai Zhou opened his mouth and looked down for a long time. He almost couldn't recognize the word "It's this!"

Luo Sanming spread his hands: "Take it and take a look!"

Bai Zhou opened his bag and then took out his laptop.

Luo Sanming couldn't wait to come over here.

Question 1...

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