Saturday, March 21.

Yau Chengtong's Mathematics Competition for College Students officially started today.

This is also the audition for the semi-finals, which is the written stage, which lasts for two days, today and tomorrow.

Earlier, after Chen Zhou submitted his paper, he and Zhao Qiqi have been paying attention to the information of this competition.

On March 15, after the information arranged by the test center came out, several people sent their names, mobile phone numbers, participating subjects and other basic information to the email address of the test center contact person by email as required.

According to the test center arrangement, Chen Zhou and his candidates from Yenching University were all assigned to the examination center of the Huaguo Academy of Sciences and took the exam at the Morningside Mathematics Center of the Huaguo Academy of Sciences.

This place is very close to Yenching University, only two or three kilometers away, and it is only two stops away by bus.

Therefore, Chen Zhou and Yang Yiyi still formed a plan according to the habits they had made, and went for a morning run when they got up.

When the run was over, Chen Zhou and Yang Yiyi went to the cafeteria for breakfast.

Just like before the UPC starts, Chen Zhou felt that there were a lot of unfamiliar eyes paying attention to them again.

Since the craze of the previous UPC award ceremony and the end of his final exams, the attention of him and Yang Yiyi at Yan University has slowly decreased a bit.

But now, why do you have the feeling that everywhere you go, you are being watched again?

Is it because he participated in a mound race?

Chen Zhou thinks that it is not enough, there is a precedent of UPC, and it should be very common for them to participate in the competition, and it is impossible to attract everyone's attention......

Thinking of this, Chen Zhou was ready to discuss it with Yang Yiyi,

However, before he could say anything, he was interrupted by a voice.

"Come on, little couple, I wish you a successful start to today's competition. ”

Yang Yiyi greeted the person who spoke with a smile: "Yurou, come and eat together." ”

The person who spoke was You Yurou, who also finished running and came over for breakfast.

You Yurou sat beside Yang Yiyi with a plate, and she asked with a smile, "Do you two feel that you are being watched again? It's strange why a Qiu Sai attracts everyone's attention again?"

Chen Zhou said strangely: "How do you know?"

Yang Yiyi also looked at her and asked, "Yurou, do you know what's going on?"

You Yurou smiled mysteriously, took out her mobile phone, and handed it to Yang Yiyi: "Na, Yiyi, look at this." ”

Yang Yiyi took the phone suspiciously.

On the mobile phone, it is a post from the campus network of Yan University.

The content of the post is about this contest.

To be precise, the most important stakeholders are Chen Zhou and Yang Yiyi.

The author of the post held a voting activity for the team and individual competitions.

Because the team competition is the sum of the results of five people, although Chen Zhou's team ranked first, the vote advantage was not obvious.

As for the individual competition, there was no surprise that Chen Zhou ranked first in the individual competition with a high vote rate.

But what is surprising is that Yang Yiyi, a non-mathematics major in the Department of Physics, ranked second only to Chen Zhou in the votes of the two subjects of analysis and partial differential equations and geometry and topology.

Of course, these are not the main reasons for concern.

The main reason is that there is a heated discussion below the post.

At first, it was normal to discuss the math level of each contestant.

Then, I don't know what's going on, the building is crooked.

And the more crooked, the more serious it is.

Starting from whether Yang Yiyi, a non-mathematics major, can achieve a good ranking.

Most people think that Yang Yiyi must be the same as Chen Zhou, very strong in mathematics.

Then Yang Yiyi didn't minate in mathematics for Chen Zhou, just for Chen Zhou.

In the end, who can win the gold medal between Chen Zhou and Yang Yiyi? Will it be a love and kill each other, or will one of them take a step back?

Perhaps the poster didn't expect that this polling post could actually become a hot post discussing whether the "peerless double pride" is in love and killing each other......

After reading the content on the phone, Yang Yiyi handed the phone to Chen Zhou and winked at him: "Do you remember when we said that when we said that the gold medal in the Qiu Competition, I wanted your subordinates to show mercy?"

Chen Zhou was slightly stunned, and then quickly took the phone and looked at the content on it.

After reading it, returning the phone to You Yurou, Chen Zhou shook his head and laughed softly: "These people can actually come up with all kinds of analysis ......"

Yang Yiyi also smiled and said: "But it's all quite reasonable." ”

Hearing Yang Yiyi's words, Chen Zhou looked at Yang Yiyi, and the two looked at each other and smiled.

Looking at the appearance of the two of them, You Yurou asked curiously: "It seems that you have discussed this topic for a long time, what is the result of the discussion? Is it to compete for the gold medal with strength, or who will automatically back down?"

Chen Zhou didn't speak, but Yang Yiyi said Chen Zhou's previous words: "What's mine is his, and what's mine is also mine, and there is no difference." ”

Hearing this, Chen Zhou understood what Yang Yiyi meant, of course, this is also what he meant.

Since what is mine is yours, what is yours is mine.

Then, no matter who wins the gold medal in the end, Chen Zhou and Yang Yiyi will be happy for each other.

It's just that You Yurou didn't understand the meaning of this sentence, she looked at the two of them suspiciously: "Can any of you explain it to me?

Chen Zhou and Yang Yiyi said in unison: "Literally, easy to understand." ”

You Yurou: "......"

After the three of them left after breakfast, they didn't know that their conversation had also been edited into a new reply and posted on the campus website of Yan University.

Suddenly, early in the morning, under this voting post, a heated discussion began.

Separated from Yang Yiyi in the dormitory area, Chen Zhou returned to the dormitory and handed the breakfast to the three brothers.

Then, start packing what you need for today's exam.

ID and student ID, as well as a black pen.

After Chen Zhou checked it properly, he waited for a while, and Zhao Qiqi, Zhu Mingli, and Li Li also finished breakfast and gave Chen Zhou a look that was ready to leave at any time.

Chen Zhou glanced at the time, 7:40 in the morning.

There are still 50 minutes before the entrance time of the first team competition in the morning, which is enough for them to get to the examination room.

The team competition starts before the individual competition.

The exam will be held from 9 a.m. to 12 noon, but the required entry time is 8:30 a.m.

This is because before the start of the team competition, it is also necessary to register the team members to arrive at the examination room.

In addition, the list of candidates and seat numbers are posted outside the examination room, and the respective seat numbers can only be known when they arrive at the examination room.

Chen Zhou took his eyes off his watch, raised his head, glanced at Zhao Qiqi and the others, and said softly, "Let's go." ”

Chen Zhou took the lead, and several people walked out of the dormitory together.

I don't know if it's Chen Zhou's reason, but several people have received a lot of attention from passing students.

When she was about to leave the dormitory building, the dormitory manager aunt also said loudly: "Boys, come on for the competition!"

Chen Zhou smiled and nodded at his aunt.

Zhao Qiqi said: "Auntie, just look at it, our brother Chen will definitely come back with a stack of gold medals......

Outside the dormitory building, Yang Yiyi was waiting for a few people.

The group of five people met and went out of the school gate together, took the No. 26 bus, and went to the Morningside Mathematics Center of the Chinese Academy of Sciences.

When I arrived at the place, the time was exactly 8:10.

Chen Zhou and the five of them followed the signboard set up by the Mathematics Center for this competition and found the location of the examination room.

At the person in charge of the competition, Chen Zhou and the five took out their ID cards and student IDs to register.

There are two examination rooms in the Mathematics Center, which are Classroom 1308 and Classroom 1318 in the Management Research Building.

Chen Zhou and the others are in the examination room of classroom 1308 of the scientific research building managed by the mathematics center.

According to the seat number posted outside 1308, Chen Zhou and others entered the examination room and sat down, waiting for the start of the team competition.

Chen Zhou noticed that the eyes of the students around him drifted to them from time to time.

"It seems that these are all students of Yan University......" Chen Zhou muttered in his heart.

At 8:30 a.m., all candidates arrived at the examination room.

Outside the examination room, at the place in charge of registration, a small line was formed.

There is no way, there are only two people in charge of registration, and the candidates who come late can only queue up slowly.

At around 8:45, all candidates were registered and entered classroom 1308.

Subsequently, one of the persons in charge of the examination center of the Morningside Mathematics Center of the Huaguo Academy of Sciences came in and read out the disciplinary questions of the exam.

In particular, it is emphasized that in the subsequent individual competitions, if you are 15 minutes late for each exam, you will be disqualified from the exam.

After he finished talking about the discipline in the examination room, he talked about the upcoming team competition.

The team competition is held from 9 to 9:30 o'clock, that is, half an hour before the start of the exam, which is the discussion time.

During this time, team members can discuss the topics of the five subjects of the team competition, and then reasonably allocate the subjects that each person is responsible for.

From 9:30 to 12 o'clock, it is the time to answer the questions, and this time is the same as the individual competition, and they will answer separately.

Discussions with each other are no longer allowed during the answering period.

Therefore, if there is any problem, it must be communicated reasonably within the discussion time.

After the person in charge finished speaking, there were still 3 minutes left, and he began to arrange the distribution of test papers.

The examination papers of the team competition and the individual competition are separated, and the five subjects are produced separately, and each subject has six questions at a time.

Candidates are required to answer five of the six questions.

It is worth mentioning that the test paper is in English, and the answer requirements are also in English.

The test papers were distributed, and the time was just 9 a.m.

With the indication of the person in charge, the 6th Qiu Chengtong College Student Mathematics Competition in 2015 officially began.

At the same time, candidates from all over China who participated in the Qiu Race team competition began to discuss the distribution of questions for this team competition.

Yang Yiyi, Zhao Qiqi, Zhu Mingli, and Li Li consciously gathered around Chen Zhou, and began to discuss the allocation of subjects with Chen Zhou as the core.

Chen Zhou glanced at a few people and asked softly, "It's all right?"

Yang Yiyi and Li Li were the first to nod, indicating that there was no problem.

Then Zhao Qiqi and Zhu Mingli said at the same time: "Chen Zhou (brother), don't worry, we have been preparing for so long, and we will never hold back!"

Chen Zhou smiled at the two of them: "Then there is nothing to discuss, according to our plan in advance, Yiyi is responsible for the volume of analysis and partial differential equations, Li Li is in charge of geometry and topology, Qiqi is in charge of probability and statistics, Lao Zhu is in charge of applied and computational mathematics, and finally I am algebra and number theory." ”

Chen Zhou's voice fell, and Yang Yiyi and the four of them nodded at the same time, and they were about to take the test paper and go back to wait for the answer.

Chen Zhou stopped the four of them, and he said slowly: "I'll take a look at the scroll first." ”

After speaking, without waiting for the four of them to speak, Chen Zhou first picked up the test paper of the subject of "Analysis and Partial Differential Equations" and looked down one by one.

If it was in the past, Chen Zhou would definitely have a headache secretly.

Because the questions are all in English.

But the current Chen Zhou will not.

Because after he completed his dissertation, his English was no longer the English of the year.

Looking at these simple test questions in English, there is not the slightest problem.

The first question is a proof question.

[If Φ∈C([a,b],R), assume that each function h∈C?? ([a,b]R), h(a)=h(b)=0, then there is a→b∫Φ(x)h(x)dx=0. Please prove that Φ(x)=0. 】

The questions are short and the message is simple.

But unlike the UPC competition, the questions are short, but they are difficult.

This question is really simple, and Chen Zhou can at least think of a variety of quick solutions.

Skipping this question, Chen Zhou continued to look down, and quickly finished reading the 6 questions of "Analysis and Partial Differential Equations".

He felt that there was nothing worth emphasizing in particular, so he handed the test paper to Yang Yiyi, and only said with a warm smile: "Come on!"

Then there is the "Geometry and Topology" paper.

After Chen Zhou finished reading it, he first glanced at Li Li, then at the test paper, and then handed the test paper to Li Li, and instructed two sentences: "Pay a little attention to the questions 4 and 5, it shouldn't be much of a problem for you." ”

Li Li took the test paper, glanced at it, and nodded lightly: "Don't worry." ”

Then there's "Probability and Statistics".

After reading it, Chen Zhou directly handed the test paper to Zhao Qiqi and didn't say anything.

Zhao Qiqi looked at Chen Zhou, who had already picked up the "Applied and Computational Mathematics" test paper, and said in a low voice: "Brother Chen, don't you tell me something?"

Chen Zhou glanced at him and said slowly: "There is nothing to advise, I believe in your ability." ”

Hearing Chen Zhou's words, Zhao Qiqi nodded solemnly: "Brother Chen, you believe me, I will never hold back!"

After speaking, Zhao Qiqi took the test paper and looked at it on the side.

Chen Zhou looked at Zhao Qiqi's appearance and smiled silently, this "probability and statistics" test paper is indeed not difficult.

Relatively speaking, he felt that the difficulty of Wu Xiping's several-point test papers at the end of last year was much more difficult than this.

As long as he is cautious and does not make some small mistakes in the details, Chen Zhou really believes that Zhao Qiqi can get a full score in this test paper.

Retracting his thoughts, Chen Zhou quickly skimmed through the last test paper.

There was no big problem, Chen Zhou slightly mentioned the points that needed to be paid attention to in the two questions, and handed the test paper to Zhu Mingli.

After Zhu Mingli took the test paper, Chen Zhou coughed lightly and focused the eyes of Yang Yiyi and the four on him.

He thought for a moment and finally emphasized the content of the answer: "When answering the question, don't ignore the so-called obvious steps. ”

"Especially for simple test questions, when everyone can do it right, then the answer steps are the details. ”

"Be sure to deduce step by step, don't skip steps, if you skip a key step, you will likely deduct points. ”

Hearing Chen Zhou's words, Yang Yiyi and the others were thoughtful.