Xueba, I beg you to go and escort him quickly!

"Master Xu Heng, is it really that powerful? It's really ignorance that limits my imagination!"

"God!"

"@庄晓然, we thought you were our ceiling, but we didn't expect there to be even more terrifying existences above the ceiling!"

"hiss……!"

Zhuang Xiaoran smiled wryly, "I used to naively think that I was the ceiling, hey...!"

Xu Zongyun quit the voice chat.

Everyone naturally retreated.

Everyone chatted in the group.

are chatting.

Xu Heng came out from the study.

Looking at Xu Zongyun who was still standing in the corridor on the second floor, Xu Heng frowned, "Why are you standing here? If you want to play computer games, you can do it yourself."

Xu Zongyun looked at Xu Heng, his eyes sparkled, and he was puzzled at the same time, "Brother! Why did you come out so soon?"

Xu Heng, "What? You want to use the study? Then go ahead and use it. I'll use it."

Xu Zongyun, "Huh? Wait, wait! Brother! Are you sure you've used it well? Aren't you giving a question to college students?"

Xu Heng, "It's ready, it has been sent to that professor."

It's out!

!!!

While Xu Zongyun was chatting with everyone, Xu Heng's question was finished!

What the hell! ! !

"Brother! You...you...you!!! Hiss...you really finished the problem and sent it to the professor? You can't be perfunctory to me...?"

"Or, you shouldn't be perfunctory when taught by a tutor (biae)..."

Xu Heng rolled his eyes, "Brat! Is there anyone who doubts your brother like that? Am I that kind of person?"

"and also……"

Xu Heng slowly approached Xu Zongyun, Xu Zongyun shrank his head in fright.

Xu Heng patted him on the back of the head, "Don't make such a fuss every time! You came back from a big city after all! Don't you have any outstanding students in your school?"

Xu Zongyun, "Yes, yes..."

Xu Heng, "Then it's over!"

Xu Zongyun, "But, he is also your fan..."

"Pfft-"

Xu Heng almost spat out a mouthful of old blood, and the corners of his eyes twitched violently.

"Okay, okay! Play with yourself! I'm going to wash up!"

Xu Heng's bedroom has a separate washroom, so he went back to the bedroom directly.

And Xu Zongyun stood where he was, sending messages in the group.

"!!!"

"Everyone! Within a few minutes of our chatting, my brother actually solved the problem! I sent it to other professors!"

"My God!"

"That's the question for the physics graduate exam!"

Everyone, "!!!"

"real or fake?"

"Sure?"

"Fuck me! This is too perverted!"

"It's not human!"

"@zhuangxiaoran! Tell us more about Mr. Xu Heng!"

Even Xu Zongyun is @zhuangxiaoran.

Zhuang Xiaoran, "???"

"@许宗云, you are Xu Hengda's younger brother, you should know him better than me!"

Xu Zongyun was embarrassed, "I'm sorry, I haven't seen my brother for several years! I just came back this year! I share the same province and school with you, and my brother is in another province!"

"..."

Xu Zongyun probably told the people in the group about the situation at home.

Zhuang Xiaoran, "Okay! Then I'll talk to you guys!"

No one is not happy to talk about their idols with others!

This said, I talked for most of the morning!

From 7:10 am to [-]:[-] am.

This group has almost become the second group of Xu Heng fans.

Zhuang Xiaoran was tired from typing.

"@许宗云, help me ask Mr. Xu Heng a question, can you?"

Xu Zongyun was also straightforward, "Send it!"

Zhuang Xiaoran sent the screenshot to the group.

When everyone looked at the question, they were all very curious, how difficult is Zhuang Xiaoran's question, how abnormal is it?

Sure enough, this question did not disappoint.

topic:

Captain Jack and his pirates plundered 6 treasure boxes A1, A2, A3, A4, , 5, , 6, among which Ai contains ai pieces of gold coins, i=1, 2, 3, 4, 5, 6, all ia are not equal to each other.

The pirates designed a layout of the box (as shown in the picture), and sent one person and the captain to take turns to take the treasure box.

Every time you can take away the whole box that is not connected with two or more boxes at will.

If the gold coins obtained by the captain in the end are not less than the gold coins obtained by the pirates, then the captain wins.

Q: If the captain takes first, does he have a proper way to guarantee victory?

After looking at the question, everyone was stunned, they had no way to start.

"@庄晓然, is this a Mathematical Olympiad question?"

Zhuang Xiaoran, "That's right, I've been thinking about it for a long time, but my train of thought is always wrong! I always get stuck halfway through!"

Xu Zongyun finally knew why he couldn't even get into those primary competition exams!

Zhuang Xiaoran can still have a little idea when doing this kind of problem, but he has nothing at all.

Looking at these questions, I can only stare blankly, I can only stare stupidly.

At this time, Xu Heng came out of the bedroom and saw that Zhuang Xiaoran was still standing there.

"???"

"What's the matter with you kid, why are you still standing here?"

After speaking, Xu Heng went to the e-sports room, turned on the computer, and he wanted to play a few rounds.

Xu Zongyun ran in, "Brother! Wait a minute! Your fans have a question for you!"

fan?

Xu Zongyun, "Zhuang Xiaoran! The number one in our school! The province can be ranked in the top three!"

Xu Heng frowned slightly, I'm sorry, I really don't have any impression...

Xu Zongyun, "I went to participate in the National Mathematical Olympiad with you!"

There are a total of 100 people participating in the Olympiad, and I really can't name everyone.

In order to ease the embarrassment, Xu Heng said, "Come and show me the title."

Xu Zongyun, "But, bro, aren't the games already on?"

Xu Heng waved his hand, "It doesn't matter, it doesn't affect the two."

Where did Xu Zongyun see Xu Heng when he was single-minded, he didn't know what to do.

Xu Heng looked at the title, then logged in to the game and opened Chicken Eater.

Xu Zongyun watched from the side, with a puzzled look on his face, "???"

This game is about to start, everyone is ready to skydive...

elder brother!Are you planning to end the game and review the questions again?

Can--

Just when the character in the game was about to skydive, Xu Heng also spoke.

"You start a recording, and I will tell you this question."

Xu Zongyun, "!!!"

I'm going to go!

Does this work?

Xu Zongyun, "This, this, this...brother! Are you sure?"

Xu Heng, "Yeah."

Xu Heng stared at the screen, operating the keyboard with one hand and the mouse with the other.

In his mouth, he was talking about the problem-solving ideas of the Olympiad.

Xu Zongyun, "Okay! Tell me! Brother!"

Xu Heng, "When the number of boxes is 2, the captain has a winning strategy. Of course, when there are four boxes, there is also a winning strategy!"

"However, when the number of boxes is four, there are two different ways of linking together."

"Let's do an analysis."

"In the first case, at the beginning of the first round, the captain has three external boxes to choose from. Of course, the captain chooses the box with the most gold coins among the three boxes. The pirate can only take one of the remaining two boxes. Unable to get the central chest."

"After the first round, the captain got no less gold coins than the pirates. At this time, there are two boxes left. The captain can take the box with more gold coins, so the captain will win."

"In the second case..."

"..."

"Back to the original question."

"Assuming that the number of gold coins in a6 is not less than a5, the captain first takes the box with the most gold coins among the boxes that can be obtained. After the pirates take it, there are four boxes left. The problem is transformed into the situation of four boxes."

"..."

"If the pirate takes a1, the captain takes 24, aa in turn and wins."

"If the pirate takes a2, it is known that the number of gold coins in a1 is more than a2, then the captain will continue to take a1. Although the captain..."

"..."

"So, regardless of the number of gold coins in the original box, the captain has an appropriate way to guarantee victory."

Done!

Xu Heng headshot the enemy with one shot!

fast!

quasi!

ruthless!