With great effort, Lu You finally got rid of the boy named Zhang Zhichuang, and was able to take a short break for a while, adjust his state, and prepare for the next second test.

After five minutes, all candidates returned to their seats. The invigilator scanned the classroom, saw that there were no vacant seats, and began to hand out the test papers.

As Lu You expected, the difficulty of the second test is not at the same level as the first test. There are only four answer questions on the test paper, and the test time is 9:40-12:30, which shows how difficult the questions are.

Four questions, namely Geometry, Algebra, Number Theory, and Combinatorics. The first two questions are worth 40 marks and the last two questions are worth 50 marks, for a total of 180 marks.

After carefully going through all the questions, Lu You had a conclusion in his heart: Nine folds?

"It is said that it is in line with the International Olympiad, but after all, it is not the real difficulty of the Olympiad, I think it will take nearly three hours, and Tang Wan can also make more than two questions."

After calculating in his heart, Lu You picked up the pen and tried to shake it off like he played with a secret weapon in martial arts, but as a result, he was unstable, and the pen flew towards his school uniform, drawing a long handwriting on the white fabric.

Lu You bent down, picked up the pen with a calm expression, and sat upright. The bells and whistles are still unacceptable, and if the pen is broken, there is no place to cry.

9：40

Exams begin.

Lu You did not hesitate to draw a few auxiliary lines on the geometric figures, and then thought about it for a while, sorted out the answer ideas, and began to write hard.

The handwriting on his answer sheet was like a constipation patient's defense with Kaiseru, which was pulled out smoothly and silkily, without any stagnation.

While the other students were still trying to draw auxiliary lines to find ideas, Lu You was already thinking about the second algebra problem.

Algebra, at first glance, looks very high, it feels like I haven't learned it, but in fact, I have been exposed to it in elementary school. The most typical example is that chickens and rabbits are in the same cage, which can be easily solved with a one-dimensional equation. And this meta-equation belongs to algebra.

The question in front of Lu You is to give an unknown condition and ask him to prove that the following equation is true.

Lu You has seen a lot of this type of question, and he has written a lot of college entrance examination finale questions. The characteristic is that the number of words is very small, but you can't see the answer at a glance, so you have to use the pen to scrutinize it repeatedly.

Lu You spent twenty precious minutes on face-saving, densely calculating half a page of scratch paper, and then after repeated pondering and induction, he wrote the complete and meticulous process into the answer sheet.

He then turned his attention to the third number problem.

The most obvious feature of number theory is that the conditions given in the question must state that one or some numbers belong to integers, and then prove the characteristics of integers, which can also be specific solutions to equations.

This kind of question is extremely abstract, and it belongs to the category that cannot be encountered in eight lifetimes in real life. Although algebra is also abstract, at least you can count the number of chickens and rabbits, right?

"Poor Wanwan, you should have a headache when you see this kind of question!"

Lu You secretly gave his girlfriend a silent salute, and then continued to concentrate, using the corresponding solution method on the scratch paper to try to solve the problem according to the type of question.

No matter how difficult the Olympiad problem is, the essence is to solve the problem, not to explore the field of mathematics. As long as it is a question, you can summarize a set of corresponding solution ideas, which is called taking a test.

The remaining two number theories and combinations worth a total of 100 points did not cause much trouble to Lu You, and it took nearly an hour and a half to complete successfully.

For him, solving a math problem is like being at the beginning and knowing where the end is, and finding the right path between the two.

The huge knowledge base he has is the best raw material, and the rich experience makes full use of the raw materials to form a powerful compass to lead him forward.

The journey takes time, but you'll definitely get to the finish line.

After checking the test papers, Lu You looked up at the time.

11：40

Yes, I can sleep again.

Lu You tidied up the tabletop, used his arms as pillows, and fell asleep peacefully. In high school, no matter how good or bad your grades are, there is nothing you can't sleep.

Zhang Zhichuang, who was next door to finish writing the second big question, and was even struggling with whether the problem solving process was right, saw Lu You lying down again, and a crack suddenly appeared in the rock-solid Dao heart.

Malegobi, where did this come from! Stronger than me!

Zhang Zhichuang's comprehensive score can only rank in the top 20 in the city, but he is definitely the uncrowned king of mathematics alone, and no one is better than him.

However, this time Embiid directly wiped the floor - an eye-opener.

Zhang Zhichuang's mentality fluctuated for only five seconds before returning to normal. No matter how fast others do it, it's none of their business, their own topic is the most important.

……

12：30

The winding bell rang on time, and more than 80% of the people in the classroom breathed a sigh of relief.

After all, not all students have undergone formal Olympiad training, and it is really difficult to do these extremely difficult questions, most of them only complete the first question, and the rest of the questions are only sporadic strokes.

Lu You stretched his stiff arms, and his face was not very good-looking.

Just now he had a nightmare, dreaming that he and Tang Wan were cousins and sisters, and they belonged to blood relatives within three generations, and out of ethics and law, they couldn't be together, and they were almost numb.

At this time, Zhang Zhichuang came to Lu You's side with stationery, his eyes were like copper bells, and asked, "Did you finish writing in advance?" ”

Lu You glanced at him, stood up with a transparent pencil case, and said, "Otherwise? ”

"How did you do that?"

"Learn more, see more, practice more."

After speaking, Lu You detoured from the other side of the seat, and Zhang Zhichuang hurriedly followed, talking non-stop.

"I think I've learned enough, but I only finished writing three questions, and I didn't have any ideas for the last question."

"Hehe, I don't say too esoteric, how much do you know about ODE and PDE? What are the applications of Fourier analysis? What do you remember about the various properties of abstract algebra? Have you ever studied differential topology? What about Lie Qun, Lie algebra and Riemannian geometry?"

"Uh......"

Zhang Zhichuang scratched his head in embarrassment and said, "I've heard of it, but I haven't understood it." ”

"Then you dare to say that you have learned enough? Who gave you the courage, Liang Jingru? ”

"Can learning these improve the speed of writing questions?"

"I can't."

"Why should I learn if I can't improve?"

Lu You stopped, turned his head and looked at Zhang Zhichuang expressionlessly.

"Before answering that question, you need to figure out another question. Do you study math to write questions faster, or do you want to really step into the field of math?

If it's the former, I suggest you go back and buy a few Olympiad questions to brush up, it's a hundred times more useful than asking me. If it's the latter, then go deep into the subject.

I can tell you unambiguously that mathematics is an extremely profound and vast world, and doing problems and studying mathematics are completely different things.

Even if you get a perfect score in IMO, it only shows that you have the ability to solve problems, and you are not talented in mathematics, and you can't even take half a foot in the field of mathematics, let alone a small provincial competition.

Find out what you need, and then do the corresponding things, and think about it yourself. ”

Subsequently, Lu You ignored Zhang Zhichuang, who was thinking for himself.

For someone who has known each other for less than four hours, he can spend time talking a lot of words, which is already very face-saving, not to mention that he has a girlfriend waiting for him to pick it up.

Lu You came to the open space next to the podium, found the schoolbag that was randomly placed by the invigilator, patted off the footprints left by the lack of virtue boy, stuffed the pencil case into it, and walked out of the classroom while carrying the schoolbag.

As soon as he went out, he pretended to be full of Tang Wan who came to find him.

Feeling the two soft water balloons in front of him, Lu You's mood suddenly brightened.

Tang Wan came out of his arms and said happily, "Such a coincidence? ”

"Why are you here?"

"Thinking that you came to me, I also took the initiative to find you, going both ways, so that we could meet earlier."

"You know how to apply math."

Zhang Zhichuang heard the girl's voice, then came back to his senses, looked at the place where the voice came from, and was dazzled on the spot.

it! It's beautiful!

Zhang Zhichuang raised his hand tremblingly, pointed at Tang Wan, and asked, "Brother Lu You, who is she, she seems to be very familiar with you!" ”

"She's what you call 'ex-wife'."

"It's really fake!"

Tang Wan couldn't understand the conversation between the two, and introduced herself to Zhang Zhichuang: "Hello, I'm not an ex-wife, I'm his current girlfriend, my name is Tang Wan." ”

"It's really called Tang Wan!"

"I'll go first, goodbye Brother Hemorrhoids."

Lu You didn't bother to pay attention to this startled guy, grabbed Tang Wan's wrist, and turned to leave.

Zhang Zhichuang saw the two disappear at the top of the stairs, and suddenly remembered that he didn't ask Lu You for contact information.

"Alas, forget it, save it for next time, and we will definitely meet again in the national competition then."

Although Zhang Zhichuang is not as good as Lu You, he has no less self-confidence, and he is nine out of ten in the national competition.

……

Walking downstairs, Lu You let Tang Wan go.

It's still too presumptuous for men and women to hold hands in school, even if they are not in their own school.

"Lu You, why did the boy with hemorrhoids just now call me my ex-wife?"

"Hmmm......"

Lu You originally wanted to correct Tang Wan, his name was Zhang Zhichuang, not hemorrhoids, but after thinking about it, forget it, let this beautiful misunderstanding pass on.

"You can tell what's going on by your own name."

"Okay, I'll check when I get back."

"How did you do in this exam? How sure are you? ”

Tang Wan recalled the scene where she did the question, and said: "The first test paper is okay, I can basically do it, and I have done it all, how many points I can get depends on how the teacher corrects the paper." ”

"What about the second one?"

"The second one is difficult, and I don't feel very optimistic personally. I will write the first two 40 points, and I will also write the process beautifully, even if I deduct many points.

The last two questions are really not going to be done, just according to what you said, how many ideas to write, if you are lucky, there are a few points, and the two test papers should add up to 220. ”

"Hah!"

Lu You chuckled twice, rubbed Tang Wan's hair, and said, "It's enough." We are not Shanghai, according to the score of previous years, 220 points can already enter the provincial team. ”

"Really!"

Tang Wan's expression suddenly became lively, and she asked, "When will the results come out?" ”

"It's going to be October."

"For a long time! Wouldn't you just change a few test papers? Why a month? ”

"The process is cumbersome. After the local test papers are corrected, the first, second and third prizes are awarded, and the answer sheet of the first prize must be handed in, reviewed by another group of people, and the members of the provincial team will be selected, and the results can only be publicized at that time. ”

"It's so torturous!"

"It's a lot of good things, that's it!"

At this moment, a few classmates around them trotted by, and when they saw that the two were still walking slowly, they said, "The school shuttle bus is about to start, why don't you go faster!" ”

Lu You and Tang Wan glanced at each other and immediately took a step.

The second shift was ten minutes late

(End of chapter)