Chapter 59

March 5, the day before the IMO race.

In the hotel room, Gu Lu was racing against time for seven national team members, including Bi Qi, to do the final competition coaching.

“…… Finally, I would like to mention to you the Demeifer theorem, although the probability of the test is not large, but once the test is passed, the difficulty coefficient of the test question will definitely not be small, not in the third question, but in the sixth question. ”

"The specific content of the Demefer theorem is composed of two complex numbers, which can be expressed in trigonometric form as Z1=r1(cosθ1+isinθ1), Z2=r2(cosθ2+isinθ2), then: Z1Z2=r1r2[cos(θ1+θ2)+isin(θ1+θ2)]. Moreover, the Demefer theorem is also closely related to Euler's formula, and if you put ......"

The seven national team students listened carefully while meticulously recording in their notebooks.

Gu Lu's level of mathematics has been seen by several people in the winter camp.

It can be said that it is not at all in the same dimensional concept as them.

Even their provincial team coach, against Gu Lu, can only be pressed to the ground and rubbed.

Therefore, several people were completely convinced by Gu Lu.

In the past few days, they will do whatever Gu Lu says. Gu Lu said that if they were asked to make up for their weaknesses, they would do their best to brush up on the training.

It was ten o'clock in the evening.

Gu Lu stopped teaching, and his eyes swept over the seven people in front of him, "Tomorrow is the main competition of the IMO, you only need to fight seriously, and you don't need to take care of the rest." ”

"This time, we're here for the team championship, so you need to take every question seriously. Don't panic, and don't wave. Now you represent not only yourselves, but also the country behind you!"

…………

The next day, the IMO race starts in the afternoon.

Like the CMO, two days, three questions per day, and the exam time is from 1 pm to 5:30 pm.

But in the morning, Gu Lu went to an office building in Imperial College London alone.

In a large conference room, more than 70 team leaders from more than 50 participating countries have gathered.

The purpose of the leaders of various countries gathered here this morning was not to chat and exchange feelings, but to determine the three questions on the first day of the IMO in the afternoon.

There is a strict selection process for the six questions in each IMO.

First of all, each participating country will submit 20~30 questions to the organizing committee.

This was completed in December last year.

Then, in January of this year, the more than 200 questions will be screened through layers and only 40 questions will be retained.

Among them, there are 10 questions each in plane geometry, elementary number theory, algebra, and combinatorics.

Finally, on the day of the official opening of the IMO.

The team leaders of each participating country will form a temporary topic selection committee to discuss and vote to decide the test questions of the day and the scoring rules of the test questions.

According to the usual practice, the IMO daily three questions should follow the principle of going from difficult to easy.

That is, questions 1 and 4 have the lowest difficulty coefficient, questions 2 and 5 have a medium difficulty coefficient, and questions 3 and 6 have a difficult difficulty coefficient!

Especially the sixth question, every IMO, there are only a handful of players who can make this question.

Gu Lu wore a team uniform with the Chinese flag printed on his chest, opened the door and walked into the conference room.

Countless eyes turned their heads to look over, and Gu Lu nodded and smiled at everyone.

Everyone also bowed their heads and smiled kindly.

The Huaguo team, no matter how you say it, is also a superpower in the IMO arena.

In the past ten years of competition, he has never fallen out of the top three positions in the team.

They are a group of small cannon fodder countries, and the leaders of more than a dozen countries combined, and at the IMO topic selection meeting, the right to speak may not be as big as Gu Lu's.

Gu Lu found a position with the label of the Huaguo team and sat down.

As soon as he put the notebook on the table, he heard an inexplicable voice from the side next to him, "Heh, Gu Lu, it's really you." ”

Gu Lu turned his head and saw an obvious Asian face, but his facial features were relatively compact.

"Are you?" Gu Lu frowned slightly.

Listening to this tone, it shouldn't be your friend.

The man's face darkened, obviously a little angry that Gu Lu didn't remember him.

He pointed to the South Korean flag on his chest and reminded, "2011, IMO competition!"

"Oh oh oh, it's you. Gu Lu found this figure in his vague memory.

It was supposed to be when he participated in the IMO in his freshman year of high school, and there was a member of the Korean team at that time, and it seemed that the person in front of him was like when he was young.

I vaguely remember that at that time, this person seemed to have won the only gold medal of the Korean team that year, with a score of 36 points.

And Gu Lu was 42 points that year, a full score.

"Excuse me, your name is ......?" Gu Lu said with a smile, "I'm sorry, there are too many defeated men, so I don't have the habit of remembering their names one by one." ”

The Korean team leader's face became a little more gloomy, and he was silent for a long time, gritting his teeth and slowly saying his name, "박장운하." ”

Gu Lu's face was a little strange.

박장운하, the name translates into Chinese, and that is - Park Changqu!

It stands to reason that with such a distinctive name, I should have been particularly impressed back then.

Gu Lu looked at Park Changqu's neck, and it was the sign of the leader of the Korean team.

"So, Team Leader Park, do you want to reminisce with me?" Gu Lu said with a smile.

Reminiscences?

Park Changqu sneered in his heart.

He and Gu Lu have no old relationship to talk about at all.

Because what Gu Lu gave him was only humiliation and unwillingness!

The 2011 IMO competition was hailed as the most difficult test in history.

Park Changqu tried his best that year, but he only scored 36 points.

But that year, there was a perversion.

Gu Lu stood out and became the only perfect score in the IMO field that year.

At that time, during the exam, Park Changqu sat behind Gu Lu.

Therefore, Gu Lu's act of answering questions easily and casually, handing in the papers and leaving an hour early shocked the young Pu Changqu at that time.

Especially when he learned that Gu Lu became the only perfect score in the audience, he had no admiration for Gu Lu and Park Changqu, only humiliation and unwillingness.

The feeling of being completely crushed made Park Changqu, who had always been proud of his talents, almost collapse.

Park Changqu is not so confident that he thinks that he is the strongest mathematical genius in the IMO arena, but at least, Park Changqu feels that the gap between himself and the top few people will not be very big, at most one or two points.

But the facts gave Park Changqu a critical blow.

6 points, close to the score of a question, and the difficulty of the question back then was comparable to hell.

Even the organizing committee didn't expect that there would really be a full score.

When inquired that Gu Lu was just a first-year high school student in Huaguo, Park Changqu was completely shut up.

Humiliation and unwillingness filled his heart at once.

The pride of being a strong man was shattered by Gu Lu.

That's when he secretly decided that he must defeat Gu Lu.

Even if...... It's good to have only once.

Unfortunately, he no longer has this opportunity.

This is his third IMO appearance, and after this time, he will graduate and enter his college career.

…………

PS: Make a reservation in advance for tomorrow's recommended tickets!!

Also, there will be a change tomorrow!!