Xu Mang, who was lying on the bed, listened to the sound of the water, and his brain was thinking about how to explain the next thing to Xiao Man.

moment

The sound of the water stopped.

Immediately after that, the violent airfield walked out of the bathroom, and then walked to Xu Mang's side, and said softly: "Sleep to the side." ”

Xu Mang did not hesitate, and quickly lay down in a cold position on the side.

When Xiao Man lay in, Xu Mang leaned in, hugged her in his arms, and said with a smile: "I'll go... It's so fragrant, what kind of shower gel do you use?"

"It's expensive!"

"I wash thousands of body washes. Yang Xiaoman twisted his body, leaned into Xu Mang's arms as much as possible, attached his head to his chest, and whispered: "What has happened to you in the past two days?

"Huh?"

"Oh... It's nothing, it's just that you're so beautiful. Xu Mang said with a smile: "Xiao Man... There's something I want to ask you for?"

"Humph!"

"I knew you weren't at ease. Yang Xiaoman glanced at him and whispered, "Say it..."

"Can you remember a little more questions?" Xu Mang said: "I just received a call from Mr. Teng of the Department of Mathematics of Jiang University, reminding me that I am the author of this Zhejiang Provincial Mathematics Olympiad, which was set last year, but I forgot..."

"I think... Let the students of Zhejiang Province feel the types of questions in some international competitions, and see how much the gap between the so-called top students in high schools and the top international ones is. Xu Mang said: "Anyway, we don't ban the Olympiad, why are there so many Olympiad competitions?"

Yang Xiaoman shook his head and said silently: "I don't know, we have been miserable in the International Mathematics Olympiad recently... It's really miserable. ”

Xu Mang doesn't know much about these, but he swiped Douyin to watch all kinds of, and then found a problem, many people define the mathematical ability of foreign students as mentally retarded...

Of course

Xu Mang didn't know if those bigwigs were right, so he went to Princeton University this time to see if the real situation was the same as what the so-called bigwigs said on the Internet.

In fact, Xu Mang already had an answer to this question, and he couldn't stand his character to the end.

"Stupid!"

"Have you finished your visa?" Yang Xiaoman asked.

"Hmm. ”

"I got it done before I came. Xu Mang said with a smile: "That's it, help me remember a little topic when the time comes, uh... Just memorize the most difficult questions. ”

“...”

"Can you be a person?" Yang Xiaoman glanced at him: "The contestants came to compete, not for your autism." ”

Xu Mang said embarrassedly: "I'll just experiment, anyway, I will talk to Mr. Teng at that time, he is the general director, and he will move the topic closer to internationalization, I think it is a trend, and the vision should be long-term." ”

"What if it is exposed?" Yang Xiaoman said worriedly.

"me... I'll just answer the question. Xu Mang said with a serious face: "Without the nod of the general director, can I come up with such a topic? Without the nod of the general manager, can the contestants do the question?"

“...”

"You're really not human!" Yang Xiaoman said helplessly: "You beast!"

Words fall,

Xiao Man's pretty face flushed with a flush, and he whispered, "Alas... Beasts, when do they do what beasts should do?"

"I'm sorry!"

"I'm a man who is inferior to a beast. Xu Mang said solemnly: "Sleep!"

Yang Xiaoman: Convex (艹艹)

...

On this day,

It's finally time to head to Princeton University.

Xu Mang has applied for the temporary position of teaching assistant and set off with the team.

The professor surnamed Wu, a mathematics professor with a good temper, Xu Mang and Professor Wu found that Professor Wu is not only good-natured, but also seems to be a real giant, and he knows many Fields Medal winners.

"Ugh..."

"We were supposed to be champions in this tournament. Professor Wu said: "As a result, you were banned, which was beyond my expectations. ”

"This is not their usual trick, if you can't beat it, you will be banned. Xu Mang smiled and said, "By the way, Professor Wu, which field of mathematics are you studying?"

"Problems with the application of partial differential equations, metric geometry, probability. Professor Wu said, "Do you have any research on these questions?"

"Nope!"

"I'm engaged in physics..."Xu Mang hurriedly shook his head, he really didn't have any feelings about mathematics.

At this point,

There is still an hour left before takeoff.

Xu Mang simply walked around the airport with Xiao Man, and it was strange to say that no one came to say goodbye to the team that went out to compete on behalf of the country.

"Huh?"

"What's going on over there?" Xu Mang pointed to a group of people in the distance and asked curiously, "Is there an accident?"

"Maybe it's a star. ”

"Don't you see all the people holding their mobile phones and slamming them all the time?" Yang Xiaoman said: "Only celebrities have this formation." ”

"Oh..."

After a few minutes,

Xu Mang observed a man wearing a mask walking to the so-called VIP lounge with his support, and then a group of people stood outside the glass wall, holding a mobile phone and slamming it.

"Who is this?"

"Why don't I know him?" Xu Mang said with a confused face: "Is he a big star?"

“...”

"I don't know either, maybe it's a fresh meat who has just debuted. Yang Xiaoman shook his head.

Belch...

That's it for looking,

is not as handsome as 0.1% of the beauty of this prosperous world.

"Anyway, why can't we rest in the VIP room?" Xu Mang asked, "We went out to participate in international competitions and go out to win international honors..."

"Don't complain. ”

"If you're really unhappy, you can buy the airport. Yang Xiaoman said angrily: "This is the reality. ”

Long

Xu Mang and his party boarded the plane and began their next journey.

...

Get off the plane,

Take a ride directly to Princeton City, because the room was booked in advance, you only need to check in with your bag, but Xu Mang encountered a little trouble, because he was temporarily inserted as a teaching assistant, and there was no room for him.

In the end, he could only live in a room with Xiao Man, Professor Wu knew that the two were a couple, so he simply turned a blind eye and did not forget the kind reminder.

"Don't stay up late at night and don't do anything that isn't related to rest. Professor Wu said solemnly.

Xu Mang: ???

Yang Xiaoman: ???

Soon the two understood the meaning of Professor Wu's words.

This night,

Nothing happened.

Following

Princeton University,

For the first time, Xu felt the atmosphere of a famous private research university, but the house was a little old... It always feels like a house of more than 100 years, although it is quite classical, but it feels a little dangerous.

Due to the tight schedule, after Xu Mang participated in the opening ceremony as a teaching assistant, he began to help Professor Wu and began to guess the questions.

In other words, the rules of the game are very simple,

There were only two days, and each day there was only one paper, and there were fifty questions on the paper, for a total of one hundred questions.

500 out of 500,

The individual award will be ranked with the highest score value, and the team award will be ranked in order of the total score of five people.

At this point,

Xu Mang opened Shi Jie's notebook in the team, connected to the hotel's wireless network, and downloaded the PUMaC topics of the past ten years.

"According to the experience of previous years, the first ten questions are all sent to the score questions, and the last five questions are sent to the proposition, so the key point of the decisive victory is the middle thirty-five questions. "Geometry and number theory occupy 80 percent, and algebraic problems occupy only 20 percent. ”

"So. ”

"We intensify our analysis of geometry and number theory. Professor Wu said, "Xiao Xu, is your number theory good?"

"Huh?"

"It's okay. Xu Mang nodded and said silently: "But... Professor: I think the proportion of topics will change dramatically this year. ”

"Oh?"

"Tell us what you think. Professor Wu asked curiously.

"I took a closer look at the questions from the past 10 years. Xu Mang frowned and said: "The first three years were very targeted, but from the fourth year, the topics became a little weird, and it was not until the seventh year that they began to develop comprehensively." ”

"Especially last year's topic, the ratio of singularity to comprehensiveness is 37 open. Xu Mang said: "I think... This year's topic is either 37 or 28. ”

"Hmm!"

"If it's comprehensive, then it's very difficult to bet. "I've heard before that the current trend is to develop students' comprehensive abilities, especially in the field of mathematics. ”

Xu Mang had also heard of this argument, and he particularly believed in it, although it violated the so-called superiority of the single and directly set the tone for its comprehensive benefits.

However, in Xu Mang's explanation, science is the foundation of human development, and mathematics is the basis of scientific development.

midday

After having lunch with the members of the team, Xu Mang nested in his hotel room, constantly trying the possibility of tomorrow's question.

And then

Autistic.

"The system... Can you tell me about tomorrow's topic?"

[Can't]

"The system... Can you tell me if my child with Xiaoman is male or female?"

【Yes】

Xu Mang: Σ('д′*ノ)ノ

it!

Your system is so bad!

Can you tell me the gender of your future child, but you can't tell me tomorrow's topic?

Xu Mang was so angry, he was originally a joke, but in exchange for a heart-piercing pain.

Oops...

This heart... Wow cool wow.

In the end, Xu Mang gave up the unwise practice of guessing a hundred questions, which was too unlikely in terms of probability, so it was better to rely on their own strength.

Of course

It is impossible to guess in the overall situation, but Xu Mang can carry out precise strikes on the local area, such as the last five major questions, which add up to ten.

If you rely on scientific means, you can guess three out of ten questions, or even more questions.

"Let's work!"

...

When Yang Xiaoman came back from shopping, he saw Xu Mang lying on his stomach in front of the computer and falling asleep, and couldn't help but show a helpless expression.

"It is estimated that the number has been blocked again..."Yang Xiaoman sighed: "It's so good to play a game." ”

took a blanket and prepared to drape it on Xu Mang's body, and immediately saw that there were ten math problems on the laptop display.

"Huh?"

"What is this?"

Yang Xiaoman was stunned for a moment, and carefully observed these ten math problems, which were actually not math problems, because there were no numbers on them, they were all pure words.

The first question of the big question,

The combination of number theory and geometry has a high probability of occurring...

Yang Xiaoman:( ̄△ ̄;)

What the heck?

When you're a forecaster, huh?

......