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Chapter 45 This year's questions are harder than previous years

The second day is rest, and the third day is the opening ceremony.These two days are actually a rest.The opening ceremony is actually just sitting down and listening.

"Hey, which team do you think is more likely to win the championship this year?" Many people in the auditorium began to discuss.Some are the media, and some are people from all walks of life.Some are from other participating teams.

"I think there is still great hope for the American Imperial team. Because this year, the American Olympic Mathematics National Team is still head coached by Professor Luo Baishen from the Mathematics Department of Carnegie Mellon University. Last year, he was also the head coach so that the American Imperial team won last year's championship. Champion. Also, under his leadership, the US team won two consecutive International Olympiad championships in 2015 and 2016. If they win the championship again this year, it will be another two consecutive championships."

"Well, this year's American Emperor team is still strong!"

"I think the Goose Ross team should also be very strong this year. I heard that they have two perfect scorers in this year's National Mathematical Olympiad."

"It's hard to say how valuable it is to have a perfect scorer in their country's Mathematical Olympiad. Now it's the World Mathematical Olympiad! The difficulty is different."

"I think the Huaxia team may win the championship!"

"Huaxia team? Forget it. Although Huaxia team belongs to the world's top teams, its performance has gone downhill in the past few years. It is possible to be in the top three. I think you think too much if you win the championship!"

"Yes, the Huaxia team has been going downhill for the past few years."

"No matter what, Asians are still the smartest in the Mathematical Olympiad! Last year's US team had four belts and two, and four of them were of Asian descent."

"Haha~ I almost forgot if you didn't tell me. It's really ironic!"

"By the way, in this way, the Bangzi National Team may become a dark horse this year. It's time for them to break out after being immersed for so long."

……

Soon came the fourth day, this day is the beginning of the first day of the exam!
More than 600 candidates were assigned to different examination rooms.

Of course Xiao Jun was not in the same examination room as the other five members of his team.Everyone is assigned to a different examination room.

Entering the examination room ahead of schedule, Xiao Jun discovered it unexpectedly.It turned out that there were members of the American Imperial Team, the Bangzi National Team, the German Team, and the Goose Ross Team.

These are the world's top teams!
"Hey, it seems that the exam room I'm in is really full of strong teams!" Xiao Jun found his own seat, sat down, and then observed the candidates of each team around him.

He found that some candidates looked a little nervous, while others were relatively calm.

Especially those candidates from the world's top teams performed relatively easily.It seems that these people are more confident in their own strength, and they are more relaxed!
Soon it was time for the exam, and the invigilator began to distribute the test papers.

After the test papers are distributed, the test bell will start!

"The exam has officially begun!"

As soon as Xiao Jun got the test paper, he read all three questions first.

1: K greater than L greater than M greater than N is a positive integer and KM+LN=(K+L-M+N)(-K+L+M+N).Prove that KL+MN is a composite number.

"Why is the first day's topic so difficult?" Xiao Jun frowned slightly.

Generally speaking, in the International Mathematical Olympiad, the questions on the first day are often easier than those on the second day.And the first question on the first day is generally a test of basic Olympiad knowledge.Most people should be able to take it down.

But judging from the first question above, the difficulty seems to have increased a lot!

Xiao Jun searched all the mathematical knowledge stored in his mind.

"Hey, I found a similar question type!"

"But... It seems that I haven't understood the true meaning of this kind of topic, and I can't fully understand it..."

"I can come up with a little answer to this question, but it is not perfect. The score I got must be relatively low. I can't get a full score of 7 points for this question!"

"Forget it, let's leave it to the top students in the group." In the end, Xiao Jun could only rely on the two top students in the group, and he wanted to get full marks!

……

On the podium, the invigilator looked at the test paper in his hand and frowned slightly: "This year's first question is so difficult, much more difficult than previous years. It seems that tomorrow's test will be even more difficult. Maybe there is no one this year It will get full marks."

He knew very well that last year, hundreds of candidates had only one perfect score.That is the championship produced one against the US Imperial team.This year's competition is even more difficult than last year's competition, so it is even more difficult to produce perfect scorers.

At this moment, the dozens of examinees in the inspection all frowned.

Because the difficulty of the questions on the first day was unexpected.

Even candidates from strong teams such as the American Emperor, Bangzi National Team, Goose Ross Team, etc. all had serious faces.

An hour later, Sheldon in the [Xueba Chat Group] was Aite Xiaojun.

Shelton: @肖俊~Group leader, we have worked together to write the answers to these three questions, please take a look!
Xiao Jun: Hehe~ Thank you both.

After getting the answer, Xiao Jun read it and wrote the answer on the test paper.

"Huh~ It's finally done!" Xiao Jun put down his pen, looked at his test paper filled with answers, and felt very happy.

After finishing the test paper, Xiao Jun became bored, and secretly glanced around when he was free.Since the desks are far apart from each other, there is no such thing as plagiarism.

Especially when he saw the two candidates from the American Imperial Team and the Bangzi National Team frowning, he was very proud.

"Huh? Is the Huaxia team finished?" Seeing the relaxed expression on Xiao Jun's face, Jack of the American Empire team looked at him with a smile.Make him feel tight!
"It can't be that fast, can it?"

But after he thought about it for a while, he saw that he was sitting there with a relaxed expression on his face.And it seems that the test papers are densely filled with answers.Although the answer is not clear.But it is obvious that all three questions are filled!
Suddenly, cold sweat broke out on Jack's forehead!
"Falke, he finished three questions in just one hour? And I just finished the first question!" Jack was shocked.If this is the case, wouldn't he have an advantage over himself in tomorrow's exam?
"If the opponent is really that strong, won't it affect the final team ranking?" The more Jack thought about it, the colder he felt.He heard from his mentor that he was most afraid of encountering such a monster!

Another 10 minutes passed without knowing it.Candidates in the examination room are working hard.Only Xiao Jun was alone, no, there was still a small group of people who couldn't do the questions busy in a daze.

Xiao Jun, who is bored in every way, is thinking, should he be skinny?
Participating in such a large-scale competition, don't you feel sorry for yourself?

(End of this chapter)