To build a mathematical model for this information security to decipher the other party's encrypted messages, Zhang Weiping never gave up.

Because there are countless variations of both functions and algorithms, it is far from enough to rely solely on manual decipherment calculations.

The first thing about information is real-time.

Especially in this situation, if you can't decipher the encrypted message in time, it won't be of much value.

Because even if it was deciphered later, people's activities and information transmission would have been over a long time ago.

But it is not so easy to build a mathematical model of an unknown mathematical law.

If you want to model, you must first understand the actual background of the problem, clarify the purpose of modeling, collect all the necessary information, and try to understand the characteristics of the object.

Then, according to the characteristics of the object and the purpose of modeling, the problem is simplified as necessary and reasonably, and hypotheses are made in precise language.

Then, according to the hypotheses made, the causal relationship of the object is analyzed, and the equation relationship between the quantities or other mathematical structures is constructed using the internal laws of the object and the appropriate mathematical tools.

It's usually hard to build a mathematical model for a problem, let alone the specially designed encryption methods in the first area.

They need more information and data.

And, as my colleague just said, training a group of mathematicians in information security is a must for a big country.

In the 21st century, we have already entered the information age, and the importance of various algorithms and encryption programs for information security is undoubted.

"However, if these functions and algorithm problems analyzed from encrypted messages are put into the training camps such as the national set of data competitions and modeling competitions, it will affect the effect of the training camp."

Thinking of this, Zhang Weiping frowned slightly.

Whether it is the Mathematics Olympiad or the Modeling Competition, the ultimate goal of students participating in these competitions is to get a good ranking in these world competitions, so that they can have the opportunity to enter a higher platform for learning.

He couldn't afford to delay the future of these students in order to decipher the information.

"Looks like it's not going to work."

Zhang Weiping shook his head, put down the thoughts in his mind for the time being, and prepared to pack up the materials and leave.

A mathematics professor next to him was stunned for a long time and asked curiously what was wrong.

Zhang Weiping said what he thought, and the mathematics professor looked at him in surprise.

"Hey, I thought it was something, you just extended the training time of the national set and modeling competition for a while."

Zhang Weiping was stunned for a moment, and clapped his hands violently: "Why didn't I think of it?" It's completely doable. ”

The training time of the Mathematical Olympiad national training team is generally in March every year.

Sponsored by the Olympiad Committee of the Mathematical Society, the training period is 15 days, that is, half a month.

In half a month, two screenings were carried out to turn the original 60 training seeds into six national teams, and then the six seeds were trained to participate in the IMO competition.

The advantage of this is that it will not delay other students to take the college entrance examination.

Because in addition to the training camp for members of the National Collection, the annual National Fair is the same as the Golden Autumn Camp of the two top universities, in fact, you can sign up and pay to participate.

The registration conditions are set in the second national competition every year, and a certain amount of national training fees need to be paid.

After all, food and housing are all centrally handled by the Olympiad members of the Mathematical Society, and money is still needed.

Although there is a fee, it is a good opportunity for those who do not make it to the national set.

If they get excellent results in the training and exams of Guoji, they may also be favored and admitted to top universities, and they can also get extra points in the college entrance examination.

This is a so-called repechage match for some students who are dedicated to the competition but fail the exam.

As for the 60 training seeds, there is no need to pay a fee, and the mathematics will be released.

Therefore, it is indeed a feasible way to extend the training time of the national market for a period of time.

However, it is necessary to consider and calculate how long it needs to be extended so as not to delay the effect of the training camp.

......

Star City, City No. 1 Middle School.

The originally lively campus has been a little cold in the past two days, and the students of the first and second years of high school have left, and only the students of the third year of high school are still holding on.

But today is the last day.

When the head teacher of each class finished explaining the holiday, the classroom suddenly resounded with cheers.

The crowd rushed to their respective dormitories with schoolbags on their backs, and Xu Chuan was no exception, he hadn't been home for almost half a year.

Sorting out his clothes and books, carrying his schoolbag, and carrying a black suitcase, he got on the bus to Yue County.

It took nearly three hours to ride the road, and the bus finally stopped at the edge of the national highway.

Xu Chuan got out of the car and looked at the newly built cement road at the entrance of the village, feeling a little excited and a little apprehensive.

The familiar buildings and farmland along the concrete roadside never seem to have changed, and they have always been the same as they are in memory.

Dragging his suitcase, Xu Chuan took a deep breath and stepped on the way home.

Along the way, from time to time, villagers who were preparing for the Chinese New Year or basking in the sun at the gate greeted him and smiled and asked if the future university students were back.

Xu Chuan responded one by one, and in a short time, he had already walked to the door of the house.

On the familiar cement floor, a middle-aged woman was squatting by the well and was busy with something, as if sensing something, she looked up and looked around, and then was pleasantly surprised.

"Chuan'er!" The woman stood up in surprise and wiped the water stains on her clothes, a hint of surprise and joy appeared in her pupils.

"Mom, I'm back!"

Xu Chuan shouted, there were faint tears in his eyes, after a few years, he finally saw his parents again, and stood in front of them again.

"You kid, why don't you call in advance when you come back?"

Wu Lian complained excitedly, snatched the lever of the suitcase from Xu Chuan's hand without saying anything, turned around and shouted loudly towards the two-story small building of the old red brick house: "Old Xu, old Xu, hurry up and buy a fish and buy an elbow and come back, your son is back." ”

"Huh? Chuan'er is back? ”

On the balcony on the second floor, Xu Jianguo popped out his head and looked at it in surprise, with a little sawdust on his hair, as if he was repairing something.

"Dad."

Xu Chuan raised his head and shouted, and immediately got a response, and at the same time, another small head popped up on the balcony.

"Brother, you're back."

Xu Xiao poked out a little head on the balcony and shouted excitedly, and then there was a knock knock downstairs, rushing over and hugging Xu Chuan's arm.

"How long has Xiaoxiao been on vacation?" Xu Chuan smiled and touched his little sister's head, this child has been sticking to the back of his ass and the ass has grown up.

"It's been almost ten days, brother, you've grown a lot taller, have you taken hormones?"

Xu Xiao looked up at Xu Chuan, who was already almost a head taller than her, and his round eyes widened, feeling a little incredible.

Obviously, the last time they met, the two of them didn't have such a big gap.

.......