Chapter 61

Of the 20 questions, only nine remained after the first round of screening.

But what surprised Gu Luluo was that the plane geometry question, which was obviously one level higher than IMO's difficulty, was not eliminated in the first round of screening.

At that time, it was Park Changqu who was sitting next to Gu Lu who proposed to eliminate the fifth problem of plane geometry, that is, the most difficult geometry problem.

South Korea's ranking in the IMO arena has been steadily improving in recent years.

In Gu Lu's time, the ranking of the South Korean team has been hovering around 10.

But a few years later, the South Korean team is no longer what it used to be.

Especially last year, the South Korean team beat old powerhouses such as China and Mi Guo to reach the top of the throne.

Park Jang-qu has only one goal this year, and that is for the Korean team to successfully defend the IMO team championship.

The six members of the South Korean team were all selected through thousands of selections.

Among them, there are three team members, and they are last year's IMO gold medal winners.

Such a lineup made Park Changqu burst with confidence, and he felt that he had won the team championship nine times out of ten.

But now, the unexpected has happened.

A question that is obviously not IMO level actually appeared in the alternative question bank.

That question, when he was reviewing the question just now, Park Changqu tried to do it.

Hard!

This is the evaluation given by Park Changqu, who graduated from the Department of Mathematics with a bachelor's degree.

If the South Korean team members are asked to do this question, maybe only Kim An-tae has a chance to get a perfect score, and the remaining five people can get half of the score.

It's a ticking time bomb.

Once stepped on, not only the South Korean team, but also several other competing powerhouses all suffered.

So Park Changqu was the first to propose to remove this question.

The leader of the United States team, the Russian team leader, and the Yingguo team leader seconded the proposal successively.

Subsequently, however, the leaders of more than 20 small countries, including the Bulgarian team leader, the intellectual team leader, and the Icelandic team leader, raised objections one after another, believing that this question should be included in the list of alternative topics.

The purpose of these small countries is obvious.

Anyway, the players of their national team are very weak, and they are not at the same level as those players who compete with strong countries.

Medium to high difficulty questions can be tackled by those who are competing in strong countries, while those who are in weak countries are completely lucky.

That's not as good as breaking the jar directly.

Just pick a question that no one can do.

In this way, we can't get points, and you don't want to score.

The meeting fell into a quarrel for a while, and the two sides insisted on their own words and did not back down from each other.

Unlike the panic of most of the leaders of the competition powers, Gu Lu leaned back in the chair and enjoyed the scene in front of him.

In the training of the national team players in the past few days, in addition to the content of the examination syllabus, Gu Lu also expanded some content outside the scope of the syllabus.

Gu Lu focuses on geometry and number theory, so he expands a lot on these two aspects.

And it just so happened that the knowledge of Menelauss's theorem and affine transformation groups needed to solve the fifth problem of plane geometry in front of him was popularized by Gu Lu to several members of the national team.

Even, in the bottom of his heart, Gu Lu was more inclined to this question and was selected into the final list of topics!

Seeing that the debate was inconclusive, Chairman Andre could only use the simplest and crude way - voting!

Result of the vote: 75:38.

Those small countries win by virtue of their numbers.

…………

Next up is three out of nine.

Nine problems, two plane geometry problems, three algebra problems, two elementary number problems, and two combinatorial math problems.

As a rule, the IMO questions for each day should be divided into three different directions.

Therefore, the voting rule is that each person can only choose three questions in three different directions per vote.

The voting time is five minutes.

Park Changqu first muttered to the leaders of several national teams next to him, not knowing what to say, and then turned his head to Gu Lu's side.

"Team Leader Gu, I have already said to the team leaders of several other countries, let's brush up on the fifth geometry problem together!"

Park Changqu was really scared.

Once the fifth geometry question is selected as the main topic, it will inevitably add many variables to the Korean team's victory.

"I think geometry problem 5 is very good, why do you want to brush it down? Gu Lu turned the pen in his hand and said with a smile, "The more difficult the question, the more it can test the true level of a team, right?"

As he spoke, Gu Lu put a check mark on the fifth question of geometry on the voting list.

Park Changqu: "......"

This Gu Lu ...... He's crazy!

Indeed, the more difficult the question, the better it is for a big country like them.

But there is a limit to this difficulty!

If the difficulty is too high, it will be counterproductive.

For example, ask a high school student to do a math problem for the graduate school entrance examination.

No matter how talented this high school student is, it is impossible to get a perfect score.

Park Changqu didn't understand the purpose of Gu Lu's operation at all.

Is it self-confidence?

Or is it conceited?

Or maybe they want to die together.

You must know that the Chinese team has performed unsatisfactorily in the IMO arena for several consecutive years.

The demeanor of the IMO hegemon of the past is no longer the same.

This time, Gu Lu did this, perhaps to pull them into a few competing powers and fall off the altar together.

…………

Collect the votes and count them, and the results are out quickly.

In the afternoon, the three questions on the first day of IMO are the fourth question of elementary number theory, the first question of algebra, and the fifth question of plane geometry!

The scene that Park Changqu didn't want to see the most still happened.

He turned his head to look at Gu Lu and saw an indifferent expression.

Chairman Andre sat on the main seat, looked at everyone and said, "The topic has been chosen, let's determine the answer and scoring rules." ”

When countries participate in the screening of questions when they submit them, they are accompanied by a standard answer.

And whether there are omissions in this standard answer, or whether there are other solutions to the questions.

The standard answers to the three questions are projected onto the large screen in the conference room.

The most difficult plane geometry problem is the one that is best evaluated.

Because there are only two solutions, one is to use the knowledge of Menelauss's theorem and affine transform groups, and the other is to use the complex derivation of high school knowledge.

Just looking at the dense formula symbols presented on the screen, many coaches feel their scalps tingle.

The leaders of some competing powers, including Park Changqu, frowned more and more.

In about ten minutes, everyone discussed the scoring rules.

Since I didn't think that there would be a few people who would make this question, the phenomenon of scheming for a point and chewing words has not appeared.

The first question, the elementary number question, is the easiest of the three questions.

For that group of players from all over the world, it can be said to be a complete scoring question.

In addition to the standard answers, the crowd also discussed two other solutions, and after determining the scoring rules, the question was successfully passed.

In the end, only the second question remains.

In the past, it was enough to be regarded as a third algebra problem.

But this year, because of the perverted difficulty of the geometry problem, it can only be relegated to the second question.

…………

PS: It's a new week, please vote for your recommendation!!

The ranking fell to more than four hundred.