December 26, Princeton, 8 o'clock in the morning.

The warm sun shines through the clouds and fills the land.

Today is the official exam day of the IMO competition, and all participants from all over the world have already familiarized themselves with the exam room and the relevant rules of the exam yesterday.

The rules of the exam are simple, the competition lasts for 2 days in total, and a total of 6 players from each country participate.

In addition to the additional questions, generally speaking, each IMO contest is 6 questions, three questions a day, 7 points for each question, and a total score of 42 points.

And if there is an additional question, it is an additional question of 8 points, a total of 50 points.

During the exam, starting at 9 a.m., there are only 4.5 hours of answering questions per day, and candidates are allowed to bring any stationery and drawing tools.

Even, considering the time of the exam, the organizing committee also allowed the players to bring drinks and food into the venue.

Of course, all electronic devices are not allowed to be brought into the venue, and once discovered, they will be punished as cheating.

However, candidates are allowed to bring three reference materials with them.

Yes, IMO is an open-book exam, but if you want to think that IMO is a simple estimate, you are wrong.

Because there is a special rule in the IMO competition, that is, every time a candidate makes a mistake in a question, not only will he not score points, but he will also deduct points backwards.

In other words, under ideal circumstances, even if a candidate does not score 0 points on a question, then he may win the championship of the world's No. 1.

And even if the candidate does every question, but gets all the questions wrong, he may end up in last place.

Yes, this rule is very cruel, but it also proves that the IMO competition is the stage of the strong.

Nine o'clock in the morning.

As the candidates entered the examination room with milk, bread and reference materials, the leisure and tranquility of the past at Princeton University had disappeared, replaced by the faint smell of gunpowder smoke in the air.

Because in the next two days, there will be a world champion of the IMO competition, the best of the world's best among the young generation.

Su Muxin was lucky, she was assigned to the No. 1 examination room, and the invigilator was still Professor Deligne.

It's just that when Professor Deligne sent down the exam questions that had been translated this morning with a smile on his face, Su Muxin couldn't help but be stunned.

Wait a minute.

These three topics...... Sounds familiar, huh?

Looking at the familiar proof questions and function questions on the test paper, Su Muxin hurriedly took out the notebook full of questions that Lin Yu gave her from the three reference materials she brought.

Soon, Su Muxin found the questions in her memory that were similar to the three exam questions in front of her in her notebook.

Her eyes swept back and forth over these topics, and after a moment of silence, Su Muxin was stunned.

Because these topics can't be said to be exactly the same, they are simply carved out of a mill!

Looking at the questions on the test paper, Su Muxin was pleasantly surprised, and at the same time, she suddenly remembered what Lin Yu had said to herself the day before yesterday.

"If you don't understand it, you have to understand it all, so that you don't happen to get the test and you don't understand, and it's too late to regret it."

I'll go! Could it be that back then, the uncle already knew that the questions in today's exam would be very similar?

Or is there a possibility that tomorrow's exam questions will be similar to today's!?

Thinking of this, Su Muxin couldn't help but clench her fists, and her heart was suddenly excited.

She subconsciously looked around and found that everyone was thinking hard about these topics, and no one had written at all.

There are even people who are pale and trembling because of excessive tension.

The exam materials they bring with them are of no use.

Seeing this, Su Muxin couldn't help but smile, immediately picked up the pen happily, and after briefly thinking about the process of solving the first question, she wrote the test paper.

"Boom."

With the light, smooth, and unpaused sound of writing in the quiet classroom, it immediately attracted everyone's attention.

Especially those candidates who also analyzed this first proof question, they looked at Su Muxin in shock and silently classified her into the ranks of math masters.

And Professor Deligne on the podium was also interested after seeing this scene.

As the examiner of this exam, Deligne naturally knows the difficulty of these questions today.

It can be said that even very good contestants are difficult to successfully find a breakthrough in the question as soon as the test paper is sent.

Basically, it takes them about 20 minutes to figure out the idea of solving the whole problem.

And only a math genius like Lin Yu can find a breakthrough in the question as soon as the test paper is sent.

Thinking of this, a funny smile suddenly appeared on Deligne's face.

Time passes slowly.

An hour later, after writing the proof process of the last question, Su Muxin breathed a sigh of relief.

After an hour of hard work, she can be said to have completed all three questions today without any pressure.

Moreover, her whole problem-solving process can be said to be smooth, very natural, without any pauses.

Compared with the uncertainty of completing the question before, this time, Su Muxin is very confident in the answers she wrote down.

Therefore, after simply checking the test paper three times and finding that there was no error in the answers, Su Muxin couldn't help but look up at the time and found that it was only eleven o'clock, and there were still more than two hours before the end of the exam.

Seeing this, Su Muxin looked at the candidates around her who were still working hard to think about the questions, and the corners of her mouth couldn't help but raise a smug smile.

She never dreamed that this IMO competition would be so easy and comfortable.

It is no exaggeration to say that this is the first time in her life that she has experienced the joy of math problems.

After sitting on the stool for a while, Su Muxin found that being idle was also idle, so it was better to eat something to pass the time.

After all, everything is brought in, and if you don't eat it, you won't eat it for nothing.

Thinking about it, Su Muxin skillfully opened the plastic bag, took out the bread that Lin Yu had prepared for her, and then inserted the milk into a straw and tasted it with relish.

"Shh

It's just that when Su Muxin opened the bread, the sound of the plastic bag wrapped in the bread was clearly audible in the quiet classroom.

For a moment, everyone in the classroom subconsciously raised their heads and looked at the source of the sound.

I saw that under the gaze of everyone, Su Muxin tore the bread with her hands with relish, and then elegantly stuffed the bread into her mouth, and drank a sip of milk from time to time, which looked very comfortable.

It was so comfortable that all the candidates wondered if this was the exam site of the IMO competition.

"Isn't it okay to eat? I remember that there was a clear rule that you could eat, right? Feeling everyone's gaze, Su Muxin was stunned for a moment, and then asked in English suspiciously.

"Absolutely."

As soon as Su Muxin's words fell, Deligne came back to his senses and walked over with a smile.

As he spoke, Deligne also came to Su Muxin's side, and after his eyes swept over the test paper that was already full of answers, the smile on his face became even brighter: "Student Su, if you finish all the questions, you can submit the paper in advance." ”

"Of course, I think it would be better if you could double-check it a few more times."

At the end of the words, Deligne reminded him kindly.

It's just that when Deligne said these words, the entire classroom was in an uproar, and all the candidates looked at Su Muxin with an incredible expression.

"どうしてこんなに早く全部できたのか! (How could it have all been done so quickly!) ）”

“this is just crazy！ (It's crazy!) ）

"Мыуверенычтоделаеmодинитотжедокуmент (Are we sure we're doing the same paper?) ）

………

All the candidates from all over the globe were shocked by the news.

Because they couldn't believe that Su Muxin had completed all the questions in about an hour.

You must know that this is a worldwide IMO competition, not those math problems in China, and the difficulty of the two is very different.

So, how could anyone have completed all the questions in such a short time.

Moreover, this kind of unbelievable thing has never been seen in the entire history of IMO competitions!

"Please don't talk to each other during the exam."

Just as all the candidates were exclaimed by the news, Deligne coughed lightly, his eyes slowly swept over the entire classroom, and said lightly.

The voice fell, and the originally noisy classroom fell silent in an instant.

It's just that in this quiet state where the needle drop can be heard, everyone's eyes are looking at Su Muxin in unison.

"Okay, then I'll hand in the papers."

Under everyone's gaze, after listening to Deligne's words, Su Muxin, who originally wanted to leave early, hurriedly responded, and immediately couldn't wait to hand the test paper on the table to Deligne.

It's just that, to Su Muxin's surprise, Deligne did not take the test paper, but reminded him with a smile again: "Are you sure you don't check it carefully, if you make a mistake, you will be deducted points." ”

"Uh...... All right. ”

Su Muxin hesitated for a moment, then took back the test paper and looked at it carefully.

Deligne nodded with satisfaction, he liked Su Muxin's non-arrogant and impatient mentality.

If you use Huaxia's words, it is a teachable child.

And after all the candidates saw this scene, they were all stunned and envious in their hearts.

Professor Deligne is known to be an extremely serious and venomous man.

If a student makes a mistake during the exam, he will point it out on the spot without mercy.

Even, for those who want to hand in the paper in advance, he will not have half a word of mouth.

But today, when Su Muxin was about to hand in the paper in advance, he reminded him twice!

That's right! Just twice!

This has never happened in Drigne's teaching career!

Therefore, after seeing this scene, everyone had to sigh that geniuses really have privileges.

And the reason why they do not have this privilege is that they are not genius enough.

"Alright, teacher, I'm done."

While everyone sighed, Su Muxin suddenly raised her head, handed over the test paper again, and said with a smile.

"Are you sure?" Deligne was stunned for a moment, and the smile on his face faded.

How long has it been too much?

Thirty seconds? Or fifty seconds?

That's what she checked?

At this moment, Deligne suddenly wanted to retract what he had just said that Su Muxin was not arrogant or impatient.

"Yes, I'm sure, because I've checked it five times."

Su Muxin smiled slightly, then stuffed the test paper to Deligne, then took her study materials and the rest of the milk and bread she ate, and left the examination room in style.

Looking at Su Muxin's distant back, not only Deligne was a little stunned, but even all the candidates were a little dizzy.

When they are still meditating, looking for ideas to solve problems, and even filling in the answers intermittently, like squeezing toothpaste, others have already handed in the papers and left in advance.

The gap between people is too big!

When Su Muxin's figure completely disappeared from sight, Deligne shook his head helplessly, and then turned his gaze to the test paper in his hand.

"Huh?"

After looking at it for a while, Deligne suddenly sighed lightly, and suddenly became interested.

He walked back to the podium, pulled out his chair, sat down, and carefully studied the test paper in his hand with great interest.

Ten minutes later, Deligne put down the test paper, a faint smile appeared on his face again, and he muttered to himself in his heart: "Sure enough, the people related to Mrlin are not simple." ”

On Su Muxin's test paper, not only is all the verification process very smooth, there is no trace of alteration, but even the whole solution idea is very clear.

In addition, this logic is rigorous and concise and efficient, without any superfluous nonsense.

It can be said that the answer to this paper is simply perfect!

And this kind of perfect answer, Deligne has only seen it on the verification theorem of the 51st Mersenne prime written by Lin Yu!

As for why he is so clear, it is because the blackboard written by Lin Yu is still displayed in the most conspicuous place in the Princeton Corridor by Faljans for people to admire and learn.

Time passes slowly.

With Su Muxin's departure, today's exam was also completely over in the painful wails of countless candidates.

After today's exam, all candidates' test papers will be sealed, and then after the end of the second exam tomorrow, they will be released by the committee group to mark the papers together.

However, before the end of the exam, Su Muxin and other Huaxia team members had a very tacit understanding that all the papers were submitted in advance, and then they collided with each other outside the examination room.

"Hahahaha, Yingying, you also came out early!"

Outside the examination room, after seeing the figure of her friend Wu Xiaoying, Su Muxin couldn't help but show a bright smile on her face, and then greeted her happily.

"Hehe, Xin'er, didn't you also come out early." Wu Xiaoying said with a smile.

"No way, today's exam questions are too simple." Su Muxin spread her hands innocently, pretending to be cute and "feeling cold".

Seeing this, Wu Xiaoying snorted, couldn't help laughing, and said jokingly: "If you say so, then you should be able to handle tomorrow's topic easily." ”

"Ahem, I think it's probably half and half."

Su Muxin coughed lightly, and immediately as if she thought of something, she mysteriously leaned into Wu Xiaoying's ear and whispered.

"Really?!"

After listening to Su Muxin's words, Wu Xiaoying's eyes couldn't help but widen and looked at him excitedly.

"Hehe, you'll know when the exam is tomorrow." Su Muxin smiled proudly, and immediately discussed today's topic with her, while continuing to wait with her for the other contestants.

Purple Pen Literature