Genius Girlfriend

Jiang Yubai was right, the introduction class was about to begin.

Lin Zhixia didn't want to be late. She took Jiang Yubai's wrist, pulled him forward, and confided to him: "Jiang Yubai, I have encountered something that makes me feel uncomfortable, would you like to listen?"

Jiang Yubai replied warmly: "What's the matter? You can speak directly."

Lin Zhixia turned to look at Lin Zeqiu. There were grievances in her eyes, and the swaying water. But my brother looked at her for a moment, turned around and left.

From Lin Zhixia's perspective, his brother's classmates quickly followed him, and everyone's backs became farther and farther away, gradually disappearing into the stairs.

In fact, Lin Zeqiu absently stepped onto the steps and put up the handrail. He was about to find Lin Zhixia, and remembered those terrifying nightmares. In his dream, he was so scared that he was awake, his pajamas were soaked in cold sweat.

In addition, Lin Zeqiu believes that his sister is too young and lacks gender awareness to get so close to Jiang Yubai.

Lin Zhixia was in the school, in the public, and allowed a boy to pull with her. How could this work? Lin Zhixia must understand a truth-in middle school, girls have to play with girls and boys have to play with boys. Students of different genders must keep social distance.

School is not a good place to educate younger sisters.

After Lin Zeqiu planned to go home, he personally caught Lin Zhixia and gave her a lesson so that she could understand what to do and what not to do.

Lin Zeqiu is still thinking about Lin Zhixia.

But Lin Zhixia abandoned all distractions and unswervingly marched towards the lecture hall.

The seventeenth and eighteenth classes are almost there. Students in the two classes sit on the left and right sides of the classroom. And the row of seats in the middle of the classroom is not cared about at all, like a dividing line, separating the two competition classes.

As soon as Lin Zhixia appeared, Han Peng yelled to her: "Squad leader Lin? Squad leader Lin! You and Jiang Yubai can sit here! We have taken a seat for you!"

Lin Zhixia and Jiang Yubai walked over and sat down one after another.

The other students only brought a notebook, but Jiang Yubai was carrying a heavy schoolbag. Because his schoolbag contained the question bank Lin Zhixia gave him—it was obviously a valuable item. He decided to keep it with him.

No one maintains discipline in the classroom, and no one makes a loud noise.

Lin Zhixia lowered her voice and quietly told Jiang Yubai: "Just now, the senior we met in the corridor, the one with a height of 1.8 meters..."

"Who is he?" Jiang Yubai asked seemingly.

Lin Zhixia honestly introduced: "That person is my brother, the kind of brother with the same father and mother. His name is Lin Zeqiu, and my name is Lin Zhixia. Obviously these are the names of a pair of siblings. He is autumn and I am summer. ...I don’t understand why he didn’t recognize our blood relationship. This morning, he warned me that he would not allow me to call his brother in school. He pretended not to know me in front of his classmates and treated me as a first-year competition. The school girl in class..."

The raging anger burned in Lin Zhixia's heart, burning out all her emotions, and only a cavity of indignation remained in the remaining ashes: "Why did he do this? Does he hate me? I'm so angry! I grew up with him. Great! He always dislikes me, talks me, scolds me for wasting his time! I don't care about him anymore!"

"Lin Zeqiu often scolds you?" Jiang Yubai emphasized this point.

"No," Lin Zhixia put her cheek in her hand, "I don't know how to say... Ah, I thought, he just said badly. I remember every word he said."

Jiang Yubai thought for a while, and rationally concluded: "Don't blame yourself, Lin Zeqiu needs self-regulation. My father said, you can't be angry with your family, and everyone in the family can discuss everything."

"What should I do if there is no negotiation?" Lin Zhixia asked humbly.

Jiang Yubai said calmly: "Expelled from the house."

Lin Zhixia was suppressed by Jiang Yubai's aura. She has a new understanding of Jiang Yubai's father's education method.

At the same time, she felt more and more distressed and depressed, and the method of "expulsion from the house" definitely couldn't be used-it was too cold-blooded and terrifying. What else can I do? She didn't understand Lin Zeqiu's strange and peculiar psychological activities. Will she and Lin Zeqiu be strangers from now on? After returning home at noon today, what kind of attitude should she face to her brother?

Jiang Yubai suggested to her: "If you have time, find an opportunity to talk to Lin Zeqiu."

"Talk about it?" Lin Zhixia asked back, "Should I take the initiative to communicate with him?"

"Yes." Jiang Yubai agreed.

Lin Zhixia shook her head frantically: "No, no, you don't understand..." She lay on the table and whispered softly: "He doesn't know me now, doesn't like me, he must be super fierce to me. I hate my brother and be aggressive with me. ."

Jiang Yubai tapped his finger on the tabletop: "He may have something to say to you. You let your father listen, he dare not attack you."

"My dad is different from your dad," Lin Zhixia explained, "My dad is very gentle. My brother has no sense of awe for dad. However, my brother is very obedient at home. He can sweep the floor, mop the floor, wash dishes, and wash clothes. The washing machine in my house is a double-barrel washing machine. That kind of double-barrel... you know? One barrel is used for washing and the other is used for dehydration."

Jiang Yubai didn't understand housework at all. He doesn't touch the sun with his fingers, and he has never done any dirty work. But he knew that Lin Zhixia's brother had made a lot of contributions to the family. Thinking about this, Jiang Yubai's impression of Lin Zeqiu improved a little bit.

But only a little bit.

Jiang Yubai believes that Lin Zeqiu, as an older brother, should set a better example. Even if Lin Zeqiu really dislikes Lin Zhixia, he can't talk about "sister annoying" every day.

Jiang Yubai's father once told his son--a mature man must have a city government, and must have a mind and courage, so that it will not be easy to guess what he is thinking. It can be seen that Lin Zeqiu is not mature enough, and Jiang Yubai hopes that he can grow up.

After thinking about it, Jiang Yubai reluctantly said something nice to his brother: "Lin Zeqiu has a sense of family responsibility."

Afterwards, Jiang Yubai continued to clarify Lin Zhixia: "You talk to Lin Zeqiu, move with affection, understand with reason, and ask him why he pretended not to know you."

The dean has walked through the main entrance.

The dean is probably over fifty years old. His hair style is rather unique, with sparse circular hair forming a circle, and the center of his head is bald. Several students from Class 18 started to whisper and secretly nicknamed the dean of "Mediterranean".

The dean noticed that the students sitting in the front row were making fun of his hairstyle. But he didn't show a slight look of mind. He coughed and said slowly, "Students, all raise their heads. You must listen carefully to this introduction class. It is related to your choices in the next three years and your development in the provincial No. 1 High School competition class. Route. There is a NetEase 126 email address and password in my first ppt. I uploaded the briefing documents and overview materials of the competition class training as attachments and uploaded them to the mailbox. After you go home, there are conditions at home, You can go online and download the electronic version. The school will send you a printed version. You can take it out and read it when you are fine. Okay?"

"Okay!" Lin Zhixia whispered in support.

Lin Zhixia just solved her heart knot. Jiang Yubai's analysis and advice were very helpful to her, and he passed on his courage to her.

After she gets home today, she will talk to her brother! Just like Jiang Yubai said, she should give it a try first, regardless of the result.

Lin Zhixia secretly summed up in her heart: Jiang Yubai is fearless, Jiang Yubai is well organized, Jiang Yubai is knowledgeable, and Jiang Yubai is indeed Lin Zhixia's eternal friend and best friend.

He can listen to her, help her plan, and give her advice, which makes her feel safe. The emotional value he brings is always positive. In Lin Zhixia's memory, Jiang Yubai's every move and word did not hurt her.

Lin Zhixia suddenly realized: "No wonder, no wonder..."

Jiang Yubai asked her while taking notes, "What's no wonder?"

"No wonder I am happy when I see you every day," Lin Zhixia analyzed rationally and calmly. "I am an ordinary deeplearng artificial neural network. My objective function is to make my life happier. When I am partial to you, I will If you can get positive feedback, I will definitely get closer and closer to you."

Jiang Yubai's handwriting is neat and smooth. He looked forward and made a request: "Lin Zhixia, please speak human words."

Lin Zhixia immediately spoke human words: "You are so kind."

Jiang Yubai's nib paused.

Lin Zhixia was afraid that he would not understand. She emphasized again: "You are very good. Even if there is a lot of hope in life, at least I met you, it is a untold thing. Really, the friendship between friends is priceless."

After speaking, Lin Zhixia nodded.

Jiang Yubai's notebook page was crumpled by him. He lowered his head and stood up the side of his notebook, covering half of his face. He thought he was thinking about the "competition class training model", but what he recorded was "friendship is priceless."

When he was in the experimental elementary school last year, Jiang Yubai had already received the evaluation of "you are super powerful."

Today in the lecture hall of Provincial No. 1 Middle School, Jiang Yubai heard "You are so good, you are so good..." and so on, a series of words he was embarrassed to recall carefully.

Perhaps Lin Zhixia is not only his competitor, but also his true friend. These two identities are not contradictory, and they can urge him to constantly improve himself.

Jiang Yubai's fighting spirit was ignited.

He wrote down the teaching method of the competition class, the direction of the students' course selection, and the training projects of previous years. This weekend, he will discuss countermeasures with his tutoring team and work out an effective plan as soon as possible. He wants to keep pace with Lin Zhixia, sweeping the major awards across the province, the country, and even the world.

Behind the hands of the dean on the podium, staring at the many students in the competition class.

The slide show reached the last one. This introductory class is almost over. The dean did not take too long. His lectures are very skillful, detailed and appropriate, and also impressed the students. One of his life principles is not to talk nonsense to students.

The students are watching him.

Those students have a young face. One day, they will grow into the pillars of the country.

"Alright, everyone, pay attention," the dean said loudly, "Next, everyone applauds to invite the two head teachers of Class 17 and Class 18-Teacher Zhang! Teacher Wang!"

A burst of applause erupted from the inside of the lecture hall. The momentum was extremely large, like turbulent waves, stirring up a thousand layers of water, breaking the original quiet atmosphere.

Teacher Zhang and Teacher Wang both walked to the podium.

Teacher Zhang, the head teacher of Class 17, bent down, manipulated the mouse, and opened a word document named "Math Warm-up Competition". There are forty questions in the document, and each question occupies a page.

Teacher Wang, the head teacher of Class 18, dragged out a small white board. He picked up a black marker and wrote on the whiteboard: Class 17, zero score. Eighteen classes, zero points.

Teacher Wang briefly introduced the rules of the competition: "Students! This is a quick answer question. You get one point if you answer it correctly, and one point is deducted if you answer it incorrectly. If a classmate gets a quick answer and makes a wrong answer, we will Pick another from the other classmate."

If you get a wrong answer, points will be deducted?

After hearing the bad news, the students in the audience became more cautious. There was even a small group of people who decided not to participate in the competition, not to drag the group, and to keep quiet from beginning to end. Even if they are dumb, it is much better than "a rat shit, a pot of porridge broken."

Teacher Zhang, the head teacher of Class 17, showed a knowing smile. He stood up straight, played the first question in the word document, and read aloud: "What are the inner and outer angles of the regular octagon?"

Lin Zhixia immediately raised her hand.

However, a female student from Class 18 suddenly stood up and rushed to answer: "The inner angle is 135 degrees, the outer angle is 45 degrees, and the inner angle is 1080 degrees."

This female classmate wore glasses, had short hair and her dress was neat and unobtrusive. She speaks with a very calm tone, like a river without waves.

Teacher Wang criticized her softly: "Jin Baihui, you have to raise your hand first. We call you, then stand up and respect the rules of the game..."

Teacher Zhang instead sold her personal feelings: "Oh? She is Jin Baihui from Class 18? It's okay. Jin Baihui's mental arithmetic is very fast. Other students may not be better than her. So let's do it! Class 18 gets a point."

Why?

Lin Zhixia muttered: "I can also calculate mentally. I am faster than her."

Shen Jixuan "hissed" and whispered: "Jin Baihui! She is Jin Baihui!"

Lin Zhixia asked back: "Who is Jin Baihui? Is she good? Her name did not appear on the ranking list for the entrance exam."

"She was the first place last year, don't you know?" Shen Jixuan turned to Lin Zhixia and said, "Jin Baihui took the entrance exam for junior high school competition class of Provincial No. 1 High School last year. She was also admitted to a young talent in Beijing. Ban. She went to Beijing to study for more than half a year, but she couldn't get used to it..."

"So, Jin Baihui returned to the Provincial No. 1 Middle School?" Jiang Yubai asked.

"Yes," Shen Jixuan covered his mouth with one hand, and told them secretly, "The head teacher of Class 18 puts great emphasis on Jin Baihui. I heard from my mother that the head teacher of Class 18 would rather give Lin Zhixia to Teacher Zhang. To accept the student Jin Baihui."

"Your mother? How does your mother know what the head teacher of Class 18 thinks?" Lin Zhixia noticed this.

Shen Jixuan straightened his legs, sitting like a lazy old man. He replied without evasiveness: "My mother is the principal of Provincial No. 1 Middle School. I entered Class 17, which I chose myself. You are the number one, where you are, where I am. If you go to Ten I will follow Class 8 too."

His mother is the principal of Provincial No. 1 High School...

Then his grandmother is not Professor Shen Zhaohua?

Lin Zhixia just sorted out the causal relationship, and was extremely surprised for a while. She learned a lot of inside information from Shen Jixuan. She paid more attention to Jin Baihui.

When Lin Zhixia, Jiang Yubai, and Shen Shixuan were chatting, Teacher Zhang reported another question. Jin Baihui raised his hand to answer that question again. Her mental arithmetic ability cannot be underestimated.

Class 17 is two points behind.

Jin Baihui looked sideways and looked at the students in Class 17. She lowered her jaw slightly, her expression was cold and provocative.

Jin Baihui's seat is close to the boundary between the seventeenth and eighteenth classes. And Duan Qiyan happened to be sitting nearby.

Duan Qiyan folded his arms and glanced at Jin Baihui secretly. Jin Baihui gave him a little thumb, and he was so angry that he almost broke out on the spot.

All these little movements were seen by Teacher Zhang.

Teacher Zhang said in a hurry: "The third question, it is known that the first five terms of an arithmetic sequence are all prime numbers. What is the smallest possible fifth term?"

Jin Baihui raised her hand high.

And Lin Zhixia stood up and replied: "The minimum value of the fifth term is 5. The arithmetic sequence is 29, 23, 17, 11, 5."

Teacher Zhang smiled and said, "Lin Zhixia, you are right, but you have to raise your hand first."

Lin Zhixia admitted her mistake perfunctorily: "Sorry, teacher, I was too anxious. Next time I will raise my hand."

Teacher Wang made a round: "You are Lin Zhixia from Class 17? Not bad, although I didn't interview you, but other teachers spoke highly of you. We look forward to you bringing honor to Provincial No. 1 Middle School . Okay! One more point for Class 17. After this round, everyone must raise their hands! Can’t ignore the rules, okay?"

All students responded in unison.

Teacher Zhang slid the mouse wheel, and Teacher Wang read the fourth question aloud for everyone: "Students, please listen to the question. Assuming that n is a decimal single digit, there is another three-digit decimal. This three The number of digits is represented by base 58 as nq, and base 62 is represented by (n-1) g. What is the three-digit number?"

Jiang Yubai took the lead in raising his hand.

Lin Zhixia noticed that he was moving, so she refused to rob him. She began to worry about whether Jiang Yubai could answer correctly. She held her breath and heard Jiang Yubai say: "The three-digit number is 512, and n is equal to 9."

Lin Zhixia stretched out two index fingers and touched her fingertips back and forth, applauding him in a low-key manner.

Teacher Zhang happily praised: "Yes! The answer is fast and good! One more point for the 17th class! Originally, Teacher Wang and I were worried that the problem was too difficult to mobilize everyone's enthusiasm. Now it seems that we The students in both classes are very happy! Very good! Keep this state!"

Han Peng, who was sitting in front of Lin Zhixia, couldn't help saying: "I have taken it... Up to now, Jin Baihui, Lin Zhixia, and Jiang Yubai have answered the question. Teacher Zhang feels that we are all enjoying it."

Han Peng leaned back in the seat, tilted his head back, and asked Jiang Yubai: "How did you make the question just now?"

"Quick number conversion," Jiang Yubai answered unexpectedly, "very basic thing."

Jiang Yubai learned the number conversion two years ago, and this year he spent six months of mental arithmetic and oral arithmetic. Even if he was playing all summer vacation, he still retained his math skills.

"Yes, Jiang Yubai is right, that kind of conversion is more basic." Lin Zhixia agreed with him especially.

Han Peng stretched his neck and almost suffocated. He sat back on the table, lowered his head, coughing frantically.

Life is really not easy, Han Peng thought.

And the game is still being held. Lin Zhixia gradually felt unfair. She is always the first to raise her hand. However, sometimes, Teacher Wang will not click her, and Teacher Wang tends to call out "Jin Baihui". It’s not too difficult to answer the first-year math warm-up questions, and there is almost no particularly complicated knowledge points. It is not surprising that Jin Baihui can do it.

"Is an unfair game worthy of a game?" Lin Zhixia asked in doubt.

Jiang Yubai had already seen everything. He instructed Lin Zhixia: "The dean is sitting at the back of the classroom. Teacher Wang cannot let the dean think that the eighteenth class is too much worse than the seventeenth class. You and Jin Baihui raise your hands one after the other, two seconds apart. , It’s not obvious. Also, if the 18th class loses too badly, their morale will be undermined, which is not conducive to developing confidence."

Lin Zhixia lay on the table. She unilaterally abandoned the game and expressed a silent protest.

Her cheeks pressed against her arms, making her look pitiful and cute.

Jiang Yubai perceives Lin Zhixia's state, and his heart is full of mission. He found that Teacher Wang deliberately ignored Lin Zhixia, which is equivalent to the referee on the basketball court being biased and deterring the other main player.

He has seen this kind of plot in "Slam Dunk".

He was not discouraged and responded calmly.

Teacher Wang is still reading the question: "Throw a dice and accumulate the points of the dice. If the number of points is greater than 10,000, it will be considered as a failure. If the number of points is equal to 10,000, then it will be considered as a success. If the number of points is less than 10,000, then continue to throw the dice. Ask, the probability of success For what?"

The classroom was quiet for ten seconds, Jiang Yubai and Jin Baihui raised their hands together.

Teacher Wang didn’t say anything. The dean sitting in the last row said: “I see these two students, raise their hands almost at the same time, let them all answer. What we are holding today is a small competition, not a big competition. ,friendship first, competition later."

Teacher Wang asked Jiang Yubai first: "What is the probability?"

Jiang Yubai calmly replied: "Two sevenths."

Jin Baihui suddenly said, questioning Jiang Yubai: "How do you calculate? Your method is not as fast as mine. I will get two-sevenths of the result by formulating an equation."

Teacher Wang nodded frequently: "What equation? Jin Baihui, you can write it on the blackboard for everyone to see."

Jin Baihui's face seems to be covered with a layer of frost, chill and arrogance coexist, she cares more about winning or losing than Jiang Yubai. She wrote on the blackboard: "Throw the dice six times, and the expected value is 3.5. I will use the formula to prove that the sequence can finally converge..." She realized that her logic was not rigorous enough, and immediately applied the Law of Robida.

Just as Jin Baihui was about to come to a conclusion, Lin Zhixia’s voice erraticly heard: "This question is not difficult, I believe you can answer it quickly. But I don’t think you need to write the general formula. There are some key update theorems in Blackwell A situation called ttice, the dice game just meets its restrictions. At this time, each item of the random variable can be expressed by a constant divided by the expected value. The constant of the dice game is one, and the result is one divided by three Point five is equal to two sevenths."

Jiang Yubai said nothing.

Because his method is the lowest level.

He assumes that the probability of success of the event is p, the probability of failure is (1-p), and several situations of failure can be listed. For example, one of the situations is that when the total number of dice points is 9995 and a number other than 5 is thrown, even if you lose... and so on, you can calculate the answer.

The mathematical theorems used by Jin Baihui and Lin Zhixia are much more complicated than him.

But Teacher Zhang said: "Jin Baihui's algorithm is very rigorous, and his knowledge of advanced mathematics is solid. I also appreciate the algorithm of Jiang Yubai and Lin Zhixia, and Blackwell's update theorem is concise and powerful."

Lin Zhixia nodded proudly.

She sat in her seat and quietly stretched out a hand. Jiang Yubai learned her to stretch out her hand, she seized the opportunity and immediately slapped him.

Jiang Yubai was encouraged. He lowered his head and laughed silently.