Looking at Lin Miaomiao, Chen Fan smiled, and said secretly, sure enough, women are animals who see things differently, and when they were in my arms, they clearly said that they loved me, but their tone changed just now.

A woman's mouth is a deceitful ghost, but I like that ghost.

The love of people and ghosts is not over

Break the worldly prejudices, break the different paths of people and ghosts, be with you, Lin Miaomiao, am I easy?

In the radio station, according to the charter, a few songs were played, Lin Miaomiao couldn't wait to open the food box, and said seriously: "You are all the freshest ingredients, the best existence in the food industry, your cultivation is not easy, I specially selected you to be the food of His Majesty, and it is not disgraceful to this life." ”

After saying that, I took a bite of the chicken thigh, which was the taste I hadn't seen in a long time.

In comparison, the grass eaten at noon today is simply the most unpalatable, and there is nothing more unpalatable.

After eating, Chen Fan went back to the classroom and went home with his schoolbag.

After several days of continuous practice, on Saturday, it was finally time to compete.

For Chen Fan, the ranking of the competition is not important, the important thing is that he has increased his brain domain development by one percent just by learning the knowledge of mathematics in the past few days.

Brain domain development 12%!

This is another leap, that is to say, Chen Fan's brain has been further developed, not only that, but he actually has an illusion, that is, with the development of the brain domain, his physical fitness is also improving, which can be seen from the fact that his national art cultivation realm at the peak of his strength is a little loose.

He obviously didn't exercise.

This also led to Chen Fan's increasing obsession with mathematics.

Because she knew that Chen Fan was going to participate in the competition, Lin Miaomiao went home, she was also a little homesick, on the other hand, her grades were also improving, in the latest weekly exam, her grades suddenly reached the tenth in the class!

This is the tenth of the experimental class! Lin Miaomiao's grades have improved, more than 20 points higher than her previous best. This can be regarded as breaking her curse of not eating meat.

Early in the morning, after Chen Fan washed.

Xu Tingting brought a bowl of steaming milk

After handing it to Chen Fan, he sat opposite Chen Fan and watched Chen Fan eat with a smile: "Xiaofan, you can bring your little girlfriend to the house another day." ”

Chen Fan was surprised: "Sister Ting, how do you know?" ”

Xu Tingting: "You went home yesterday and left lipstick on the corner of your mouth, which is very shallow, but that is a 200 lipstick, which is more suitable for girls, and you don't have the right taste on your body." ”

Chen Fan was speechless: "......"

Sister, it's a pity that you don't want to be a detective!

But Chen Fan didn't dare to say anything, he had a feeling that he had been caught cheating, in short, he was weak-hearted.

Scratching his head, he took a sip of milk.

"Xiaofan, you don't have to be afraid, and I don't object." Xu Tingting is very calm.

"You're so confident?" Chen Fan asked rhetorically.

"Why am I not confident? You are the old lady who grew up, even the excellent is excellent under my nose, the first to sleep with you is the old lady, your first kiss was taken away by the old lady, from childhood to adulthood, it was the two years I went abroad, not by your side, even when you just opened your mouth to drink, it was in my expectation. Xu Tingting was unexpectedly fierce.

"Did I pout my lips?" Chen Fan didn't know it himself.

"When you have a weak heart, you are used to pursing your lips slightly, especially when you drink something, and of course when you drink milk, it is even more obvious." Xu Tingting pointed out a habit that even Chen Fan himself didn't know.

"Really? Hahaha. Chen Fan took another sip of milk, making his teeth white.

"Little bastard, it's been like this since childhood, it's dirty." Xu Tingting walked up to Chen Fan and helped Chen Fan clean up the milk in her mouth with her mouth.

Long

Xu Tingting helped Chen Fan tidy up his clothes, and said with a smile: "Take the exam well, it's rare to see you take the exam so seriously, come on!" ”

She regarded the scene of Chen Fan studying mathematics hard and brushing up on the development of the brain domain as a preparation for the exam.

"Well, Sister Ting, I'm leaving." Chen Fan hugged Xu Tingting.

Bidding farewell to Xu Tingting, Chen Fan came to the examination room, and there was no large number of parents picking up and dropping off during the usual exams.

But there are also a lot of people

There are a lot of college students coming and going.

Tsinghua University, the dream institution of students across the country, is the cradle of many college students' dreams.

It is also the place where Chen Fan took the exam this time.

Look at this place with a quaint appearance and the youth that comes from going to and from university.

Chen Fan remembered Lu Xun's words:

The place of your dreams may have been in and out of the place.

Hey, hey, hey

Chen Fan found the examination room located in the laboratory building.

The exam is not as strict as the preliminary selection, this is the final.

In the previous competition, Qian Sanyi had already finished the exam.

The people who took the exam are also from all over the country.

It has to be taken seriously, because the top three are directly escorted to Tsinghua University.

In front of the examination room, it was very simple, a male teacher wearing glasses, a female teacher, each holding an instrument in his hand, and a sign was set up in front of the door, Olympiad Mathematics Competition.

Accepted the investigation and entered the examination room, there were a lot of people in the examination room, about 40 people, Chen Fan was too lazy to count how many people, but to Chen Fan's surprise, there was only one female classmate!

The people present came from all over the country, and after layers of selection and elimination from all over the country, they finally came to this exam.

Of course, there is no shortage of famous schools that use the relationship to enter this exam.

But the people who hold this exam don't care, because the questions can't be leaked, as long as you have a level, no matter what you have to do with it, it's okay.

"That female classmate is so familiar, and she is also from an elite high school? Or did you see it in junior high school? Chen Fan glanced at it twice, but he didn't care, he found his seat and sat down.

Half an hour later, the exam papers were sent out.

Chen Fan glanced at it, and it was unexpectedly simple.

Come to think of it, this exam is only for high school students, and the level is not much higher.

However, when it came to the last question, Chen Fan was stuck for ten minutes.

This is terrible, it only took Chen Fan fifteen minutes to answer the question earlier.

"That's an interesting question."

The final question goes something like this: Suppose you have a sequence of 1 and -1 (e.g. randomly generated by a coin toss) and a constant C. You need to find a finite number series that is long enough that the sum of this series is greater than the constant C.

The problem is simple to describe, but difficult to prove.

Chen Fan estimated that none of the people present knew how to prove it

Because I don't understand the meaning of the question, that is, I don't know how to prove it.

This question may seem casual, but it is very restrictive

The method of answering the questions should be based on advanced mathematical ideas.

But the translated mathematical idea is:

No matter how these plus or minus 1s are arranged, this conclusion holds: given an arbitrarily large constant, such a sequence of numbers can be found.

Chen Fan first explained it with high school knowledge, then thought about it, and explained it again with advanced mathematics, which used Hilbert space.

You may not know about Hilbert space, but everyone knows about the plural episodes of high school

……

Twenty-five minutes, Chen Fan handed over the paper.

At the same time, in one of the university's offices, an old man was talking to a young man in his early thirties: "Zhexuan, what do you think will be the highest score in this Olympiad National Mathematics Olympiad?" ”

"85 points, because the question is from me, the last question can be solved using the knowledge of high school, but it is difficult to answer clearly, in fact, it is difficult for anyone in the mathematics world to say clearly." The man named Zhexuan said with a smile.

"What's your problem?"

"Erdsh discrepancy problem!"

"That puzzle that has plagued the mathematical community for more than 80 years?" The old man exclaimed.