Xueba: The knowledge I teach, critical hits are returned

The next day was Saturday.

Gu Bai did not sleep in, and actually agreed to Professor Luo Shifei's request to participate in the"National Undergraduate Mathematical Modeling" competition. Gu Bai did not care whether he would win the"Thank You for Your Patronage" award or not, he just tried his best and left the rest to fate.

After having breakfast in the cafeteria, Gu Bai came to 201 on the 3rd floor of the Graduate School of Mathematics.

He pushed the door open and entered, but there was no one.

The room was not big, empty and there was no desk. There was a blackboard standing upright in the middle of the room.

A question was scribbled on the blackboard with chalk, and there were several mathematical formulas below.

The question was roughly: [Three merchants each brought an attendant to cross the river, and the boat could accommodate 2 people at a time. The attendants secretly agreed that on either bank of the river, if the number of attendants exceeded that of the merchants, they would kill and rob. The plan of crossing the river by boat was decided by the merchants. Question: How can the three merchants cross the river safely without being murdered by their attendants?

]........

Gu Bai glanced at the question and smiled. This should be the classic"Merchant Crossing the River Problem" in mathematical modeling?

How difficult is it? It is almost impossible for Gu Bai now.

As for building a mathematical model, it should not be difficult either.

Although I have not systematically studied mathematical modeling,...Gu Bai, who is at the math level 4, can easily solve any math problem he faces.

Picking up the chalk that Diuluo had left, Gu Bai slowly added at the bottom of the blackboard:"If we use a multiple decision-making model and set each crossing of the river as a state-linked transfer process, we can use a three-dimensional vector to represent (m, n, z)"

"The value range of m is: {0,1,2,3}；"

"The value range of n is: {0,1,2,3}；"

"z is represented by {1: rowing to the other side of the river; 0: rowing to this side of the river; then its state quantity is represented as (1) when m = 0 or 3, n = {0, 1, 2, 3}, when m = 1 or 2, m = n....."

"....By analogy, if the value position of merchant m, the value of follower n is also material, the final state obtained after crossing the river for the kth time can be obtained as S (k+1)=SK+（-1) *dk...."

Gu Bai smiled as he looked at the finished model.

Sure enough, as a math level 4 himself, even without the system's critical hit return, there was nothing he couldn't solve as long as he put in a little effort. The classic mathematical model of a businessman crossing the river on the blackboard was 80% complete.

As for the next 20%, that was to use computer programming, but this step was no longer something Gu Bai was concerned about.

His computer level was still LV0, and he only knew how to use word documents, and he wasn't even familiar with excel spreadsheets, let alone expressing these mathematical formulas in programming language.

Fortunately, Gu Bai still had two teammates.

"If I remember correctly, one is Xue Jiabao, a junior in the Computer Science Department, and the other is Li Mengfan, a junior in the Mathematics Department."

""Senior Xue Jiabao should have no problem with this simple programming logic, right?"

Gu Bai thought to himself. Gu Bai was not worried about the mathematics. The only thing he was worried about was whether the team could use computer programming to write these mathematical models.

After a while, the door of the room was pushed open again.

A senior with glasses and messy hair walked over, was stunned when he saw Gu Bai, and then smiled:"You are the new teammate introduced by Professor Luo Shifei, right?"

"Hello, Gu Bai."Gu Bai smiled and said hello

"Xue Jiabao. The man smiled and stretched out his hand to shake hands with Gu Bai.

However, when he saw the densely written mathematical models on the blackboard, he was stunned. Then he looked at Gu Bai and asked,"What is this?"....Did you write this?"

"Oh, I just couldn't help but write some because my hands were itching."Gu Bai said with a smile

"Wow, that's awesome."

"Li Mengfan and I spent a long time studying this question yesterday, and you figured it out in just a short while?"

Xue Jiabao was a little incredulous.

"

Is it difficult ?"Gu Bai was a little speechless, and he roughly understood the level of his teammates' mathematical ability......

This sentence immediately stunned Xue Jiabao. Isn't this thing difficult?

If it is just 3 merchants with 3 followers, it is indeed not difficult. You can figure out the final answer by scratching your head bit by bit. But the difficulty lies in if there are m merchants with n followers. The problem is completely different.

"Damn, you...You are the freshman Gu Bai, right?"After looking at Gu Bai for a few more times, Xue Jiabao suddenly slapped his thigh with an excited look on his face.

"If there is no duplicate name, it should be this one."Gu Bai smiled faintly.

"Xuejiabao, nice to meet you!!!" Xuejiabao shook Gu Bai's hand again and introduced himself again:"Xuejiabao, a junior in computer science, 178cm tall, 108kg in weight, no girlfriend yet, likes League of Legends and World of Warcraft, but not sports. Oh, and I am good at JavaScript, PHP, C and other programming languages...."

Listening to Xue Jiabao's self-introduction, Gu Bai touched his nose helplessly.

This guy is definitely a super straight man.

After a while, another senior, Li Mengfan, also came. Fortunately, Senior Li Mengfan is more normal, but his math ability is really average. Or maybe the level of students in the Department of Mathematics at Linhai University is like this.

But Gu Bai didn't force anything. This was the first time he met the three team members of the National Mathematical Modeling Competition formed by Linhai University.

As for whether he can achieve results, Gu Bai doesn't know, but... try his best.

Fortunately, the competition will be held in September, and there are still several months away. During this time, Gu Bai can also teach Senior Li Mengfan about mathematical modeling problems. As for computer programming, Gu Bai's hope is only placed on Senior Xue Jiabao..........

As time went by, Gu Bai's life became more regular. In addition to reading books and attending classes in the library, he also had live teaching at night. Now he also had the daily training of the mathematical modeling team.........

It's called training, but in fact it's just Gu Bai lecturing on the stage, Li Mengfan learning below, and Xue Jiabao editing on the phone.

On this day, May 1st.

Yangcheng No. 1 Middle School ushered in their last mock exam before the college entrance examination.

Different from the last"Jiangnan Ten Schools Joint Examination", this mock exam is not large in scale. It is just a joint exam of more than a dozen high schools in Yangcheng.

But after all, it is the last mock exam for senior high school students, and all the school leaders of Yangcheng No. 1 Middle School still attach great importance to it.

And...The difficulty of this test paper will not be too great, similar to the college entrance examination, so this basically represents the final result of the college entrance examination..........................................

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