The days of the national training team are still going on, and so far, most of the players have gone, and the remaining players are all one in a million, and the elite is selected from the elite, referred to as Jingjing.

So far, among the players counted by Shen Lang, four people have basically been selected for the national team this time.

Fang Chao, five exams, five perfect marks, a total score of 150.

There is no doubt that with his strength, this time in the IMO national team, Fang Chao will be the captain and lead this group of players to the United Kingdom.

Yes, this year's IMO competition was set up in the empire where the sun never sets.

Although the sun never sets in the empire, the place of the competition is different every time, and the final location of this year's International Mathematical Olympiad is in the city of Bath.

In this training camp, Fang Chao has been affirmed by all the contestants with his strong strength, every time he takes the exam, he can basically hand in the paper five minutes early, and he can also ensure the accuracy of his answers, such a person to be the captain of the six-person group, others will not have any dissatisfaction at all.

Because if it were any other person, I was afraid that there might not be such an influence as Fang Chao, and there would be some discomfort in my heart.

In addition to Fang Chao, Zhang Tiannan, Jin Zixuan, and Xiao Zizhan hardly had much controversy, and became three of the six candidates.

Zhang Tiannan, five exams, one full score, the rest of the scores are above 25 points, with a total score of 135 points.

Jin Zixuan, five exams, no perfect score, but the overall score is also above 25 points each time, with a total score of 133 points.

Xiao Zizhan, five exams, two perfect scores, the first two poor performances, but it did not affect his later performances, with a total score of 129 points.

Compared to Fang Chao's 150 points, these people are indeed a little worse, but they are strong enough, because the test for them does not mean that these players will not do it, but the time is limited, and the one who completes the most questions within the specified time and is correct is the winner.

In addition to Fang Chao, Zhang Tiannan, Jin Zixuan, and Xiao Zizhan, the remaining dozen players are still in the process of being determined, because their scores are not good enough, and the overall scores are almost similar, so if you want to continue to stand out, you can only get higher scores in the next evaluation.

Most of these people also have scores between 110~125.

……

Now, according to the question on the blackboard, you are not allowed to rush to answer, I will ask a question, you all look at the blackboard, and in two minutes, I will ask a question.

Professor Lin spoke, he is Chinese New Year's Eve this year, is in the rising period of his career, but also won a gold medal in the IMO mathematics competition, served as a doctoral supervisor in Peking University, and at the same time has made achievements in mathematics and chemistry, published a paper that has attracted widespread attention in the society, and his chemistry "Life Player" has become popular and sought after by countless people.

At the same time, as the head coach of the national team, he also led the national team to participate in this year's IMO Mathematical Olympiad.

As Professor Lin spoke, he began to draw on the blackboard.

On the three-dimensional plane of x, y, and z, two circles of different sizes.

The specific picture is shown in the figure below.

(Brain Supplement~)

Two minutes later.

Professor Lin named him.

"Cai Cai, what would you do if you were given this question? Give me an idea to solve the problem. ”

Cai Cai's real name is Han Cai, but everyone has been getting along for a long time, and they are used to it on weekdays, and Professor Lin also calls each other Cai Cai on weekdays.

When Han Cai heard this, he immediately got up, "Professor Lin, this question ...... In this case, should we use the Pythagorean theorem first...... And then...... And then...... Then ......"

"And then what?"

Professor Lin continued to ask.

And then ...... And then...... Then ......"

"Cai Cai, sit down."

Professor Lin reluctantly spoke, and asked Han Cai to sit down, if it was just a Pythagorean theorem, this question can only be regarded as a completed step, this question is placed on any student in any university, it is not easy to think of this step, but where is this? The remaining dozen or so players in the national training team are all carefully selected math players, and if they can only think of the first step, it is simply too bad, which makes Professor Lin quite disappointed.

In the entire training team, Fang Chao, Zhang Tiannan, and Jin Zixuan are satisfied, as for Xiao Zizhan, although there is a high probability that he will be one of the six-person group, but this child is too random, and he is a play-type player, once the mentality collapses in the IMO competition, I am afraid that it will affect all the next play, but once Xiao Zizhan is played, then it will be smooth, and it is not difficult to get a high score in the IMO event.

As for the remaining players, if you want to pick two more people to complete the last six-person group, the problem is very big, and it always feels like it will be a mistake to choose who to choose, because the level is too similar, and it is necessary to screen again, and eliminate ten people from these twelve people, and the last two will form a national team with Fang Chao, Zhang Tiannan, Jin Zixuan, and Xiao Zizhan to participate in the IMO event of the Sunset Empire.

"Lin Dong, you get up."

Lin Dong stood up, "Professor Lin, I thought of the Pythagorean theorem and the Bramegutta theorem for this question, but all I can think of is this, other things...... Well, I haven't figured it out yet, maybe it's too short, but if I give me a little more time, I can definitely figure it out. ”

"Lin Dong, yes, then you come up first and write the solution ideas you think of on the blackboard."

"Yes."

Lin Dong nodded, walked to the blackboard, picked up a piece of chalk, and then began to move the chalk.

He drew two more circles on the edge of the question, in the same coordinate system, and then began to answer.

He writes the problem very quickly, and after completing the auxiliary lines, he immediately starts to solve them.

When the first ten steps came out, Professor Lin also nodded, and the rest of the contestants also looked stunned.

"I see."

"I see."

"Lin Dong is still okay......"

But when the eleventh step came out, Professor Lin's expression changed suddenly.

The second person who had this change in expression at the same time was Fang Chao.

Lin Dong did something wrong!

The previous steps are correct, but when you come out of the eleventh step, even if you are correct, you have already taken a detour, and it will be a waste of time to continue like this.

Fang Chao's level was not as high as Professor Lin's, Professor Lin reacted instantly, and it was not easy for Fang Chao to understand only two seconds after Professor Lin reacted.

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