After a thousand years of trading, start a million barrels of oil

Chapter 56 Questions (for further reading)

When Jiang Fan heard Lin Wan's question, the steps he had just taken stopped.

Yes, this has not been explained yet.

how to say?

In a hurry, Jiang Fan turned around and remained calm and said to Lin Wan, "Because you said you want to engage in mathematical modeling, so I just made up some math knowledge to see if I can provide you with some help."

What a girl cares about is her position in your heart. It doesn't matter whether the reason is irrelevant or not. Jiang Fan's answer is obviously qualified.

Lin Wan pursed her lips and smiled after hearing this, very happy,
But this time she was really curious about why Jiang Fan was so powerful all of a sudden, so she continued to ask coquettishly after laughing:

"Tell me, how did you become so strong all of a sudden?"

At the same time, he looked at Jiang Fan with curiosity and anticipation.

Jiang Fan knew he couldn't escape, so he had to find a decent reason, and Tan Tanshou said calmly:

"You know, when I do overseas business negotiations, it involves big deals, and there are a lot of calculations,

And I have always had the idea of ​​going to college, so I took the time to study some content of college mathematics, and I learned it. "

Lin Wan thought about it thoughtfully. She didn't know that such advanced mathematics would be used in a big deal?

But if you have a dream of mathematics, it is reasonable to go to self-study,
But being able to learn this level on your own is really amazing.

"Brother Fan, you have a really good brain, you can be so good at self-study." Lin Wan envied and even felt a little incredible.

"Of course, there is usually a smart person next to a fool."

"Yeah~" Lin Wan nodded, feeling that what she said made sense, and suddenly realized something was wrong, she patted Jiang Fan's arm and laughed and cried:

"Who do you call an idiot~, who do you call an idiot~"

The two of them left the teaching building while arguing. It was already lunch time, and they happened to go to the cafeteria for a meal.

Going to school for a while, Lin Wan took Jiang Fan to almost eat all the cafeterias of Sichuan Shu University.
Just going to a new one today, there is a flavor canteen not far from the teaching building.

The two ordered food from the window while chatting, and walked to the dining table area,

At noon, there were quite a lot of people, and the two were looking for a seat while talking.

"Senior Brother Zhou, Senior Brother Huang." Lin Wan suddenly smiled and greeted a dining table not far away.
Jiang Fan looked over, and at the table were the two seniors from Lin Wan's mathematical modeling team he met last time.

The two seniors should have noticed Lin Wan's place just now, and they also nodded in greeting.

Lin Wan and Jiang Fan continued to walk forward to find a seat, but the seat was either full of three people or all four were already occupied, or there was no one but the four water glasses were already occupied, making them unable to find a seat for a while. place.

I searched back and forth, and I just ate it, and it seems that I didn't see any left.

"Are you looking for a place?" Senior Huang Wei caught a glimpse of the two of them wandering, and asked when they passed by them again.

"Ah? Ah~, there are too many people." Lin Wan replied with a smile.

"Then sit next to us." Huang Wei was kind enough to others, and greeted him proactively.

"Ah, okay." Lin Wan hesitated and replied,
In fact, she didn't really want to sit next to the senior, she was under pressure,
Especially senior Zhou Jian, who often has a straight face and doesn't like him,
But there is no other seat, Senior Huang Wei invited again, just sit down.

Lin Wan and Jiang Fan sat down facing each other, next to Lin Wan was Huang Wei, and Senior Zhou Jian, whom she didn't like, asked Jiang Fan to sit next to him.

Then Lin Wan lowered her head to eat, and stopped talking to Jiang Fan, after all, the atmosphere of speaking was gone.

Huang Wei and Zhou Jian didn't bother the two of them, and continued to discuss the problems of the morning.

"I think it's better to use genetic algorithm to solve this problem, because it says it." Zhou Jian said to Huang Wei.

Huang Wei shook his head: "You only considered the complexity of the algorithm, but did not consider the flaws of the algorithm itself, that is, it is impossible to evaluate the scale of the difference between it and the optimal solution, so I don't think it is suitable for solving this problem. .”

Zhou Jian continued: "Although there are such defects, I think it is still very suitable for this question, especially"

The two argued fiercely while eating, and with the knowledge patch, this time Jiang Fan understood,

And after listening to the whole picture of the problem, he felt that the solutions given by the two were not the optimal solution.
But he didn't bother to say, he just came to eat.

After discussing for a while, Zhou Jian and Huang Wei seemed to be unable to convince each other, so they finally calmed down after talking about going back after dinner.

The table suddenly became quiet. After eating for a while, Huang Wei suddenly thought of something, turned around and said to Lin Wan:

"Lin Wan, how about the piece of knowledge I gave you last time?"

After all, it is a team, and Huang Wei sometimes assigns some learning tasks to Lin Wan.

"Ah? Knowledge points." Lin Wan was a little at a loss,
The knowledge points given to her are too difficult, how can I understand it, so I can only falter and say: "I'm still reading it."

Huang Wei nodded, took out his mobile phone and said to Lin Wan:
"It just so happens that there is a question here, which is related to that knowledge point. It's not difficult. Take a look. When the computer room arrives at 2 o'clock in the afternoon, tell us about the problem-solving ideas."

When Huang Wei finished speaking, Lin Wan's mobile phone also received a V letter, which contained a question.

Lin Wan curled her lips quietly, and could only respond: "Oh yes."

Then the four of them immersed themselves in eating hard.

Huang Wei and the others finished eating first, greeted each other and left with their plates.

Lin Wan turned her head to look at their leaving figures, and when they were far away, she turned her head and let out a long sigh.

"What's wrong?" Jiang Fan could see Lin Wan's emotion.

"I can't take a nap again at noon." Lin Wan said aggrievedly, seeing that Jiang Fan was still looking at her, she took the initiative to explain:
"Senior Huang Wei often assigns me study tasks, and then gives me questions to do.
But the knowledge points he gave were so difficult that I was too embarrassed to say I couldn’t understand them, and I couldn’t solve the problems.

Let's take a look at the topic at noon later, at least I can say something by then. "

Jiang Fan thought that it was really hard work for the scumbag, so he ate two more mouthfuls of rice, and he still couldn't bear to hear Lin Wan sigh again, and said:

"Show me your topic."

"Here you are." Lin Wan looked at Jiang Fan dully, and suddenly there was light in her eyes: "That's right, Brother Fan, you are so good at math."

Quickly took out the phone, opened the subject of the V letter, and handed it directly to Jiang Fan.

Jiang Fan took a look, it was a ticket issue:
There is a flight price list between 7 cities. It is necessary to visit each city with the least cost and return to the departure point. How to do it?

Jiang Fan understood at a glance, this is an application of the traveling salesman problem, not difficult.

But look at Lin Wan's frowning look just now, you can tell that the difficulty is relative.

Jiang Fan waved to Lin Wan: "Sit next to me, and I'll tell you something."

(End of this chapter)