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

topic:

Let n, k, m be positive integers, satisfy k≥2, and n≤m<((2k-1)/k)n.

Let A be an n-ary subset of {1,2,...,m}.

Proof: Every integer in the interval (0,n/(k-1)) can be expressed as aa, where a, a'∈A.

As soon as this question comes out.

The group owner said directly, "Student, how did you get into the group? Who pulled you in? @全员"

Newcomer, "???"

Others in the group also spoke at this time.

"not me!"

"not me!"

"Exclude me first, next!"

"Next! Not me."

"..."

Newcomer, "Wait! Group leader, what's going on? What's wrong with me? What do you guys mean?"

The group leader, "The question is too simple, are you sure you can't? Are you sure you're asking this question to Mr. Xu Heng, not insulting others?"

Newcomer, "I, I, I... I really don't have one, you believe me, I..."

Other members of the group said, "Everyone in this group knows how to solve this problem. Newcomers, tell us the truth. Are you underestimating the strength of our group?"

"Although we are big fans of Xu Heng, don't forget that we are top-notch existences in our respective provinces!"

"As far as your question is concerned, a counter-evidence method can easily solve it!"

"+1!"

"+2!"

"+3!"

"..."

Newcomer, "I was wrong! I was trembling..."

He withdrew the question (Nuohao Zhao) and returned it.

He really didn't understand this question very well, but he never expected that everyone in the group would.

孽 孽!

This is not a fan group, understand that this is a group of top students!

Put it lightly!

proof by contradiction

With a few simple words, this question was put aside.

"Hey……"

He looked at the phone, frowning deeply, "How terrifying is this group!"

The group leader also publicly announced in the group, "Before joining the group, create an audit group and throw a few magic reform questions into it. If you can't answer within a time limit, you won't be added to the group."

Everyone in the group said, "This is good! Nothing wrong!"

The group leader, "Students who are just pretending to be numbers must not be allowed to join the group!"

While talking, Feng Hechuan came out to speak, "Well... I have a senior, can I join the group?"

Lord,"???"

Everyone, "???"

Feng Hechuan, "My two-year senior was admitted to Peking University. Because of the university's addiction to online games, he failed all subjects. Now he was expelled from Peking University and returned to our school..."

Everyone in the group, "!!!"

My mother, how willful this is!

Getting into Peking University and becoming addicted to online games?

What a waste of money!

"hiss……"

Feng Hechuan, "Group leader, give me an opinion!"

Everyone has passed the Peking University exam!

Strength proves everything.

The group owner, "Join the group! Quick! Invite in!"

Feng Hechuan invited people into the group.

"Ding! New member Wang Quanquan has joined this group!"

This talented student who was dropped out of Peking University was called Wang Quanquan.

Entering the group, Wang Quanquan's first sentence is, "Hello everyone!"

"Explosive photo! Explosive photo! Explosive photo!"

"Women's Clothes Explosive Photos! Newcomers Women's Clothes Explosive Photos!"

Wang Quanquan, "???"

"Feng Hechuan, have you told me about my women's clothing?!"

……

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Chapter 160

Lord,"???"

Feng Hechuan, "???"

Yang Kaixuan, "???"

He Junfei, "???"

Luo Jianing, "???"

Luo Jianing?

???

Both Yang Kaixuan and He Junfei were stunned!

When did this person join the group?

Luo Jianing!

No.2 in the city's entrance examination last time!

Except for the last time, she has always been number one in the city!

When did this classmate come in?

But now is not the time to discuss this, but there are students from 3 provinces here!

There are now nearly 200 people!

There are more and more people in the group!

At this time, even Xu Heng was confused.

He looked at the screen with a strange expression.

This senior is having a good time, has he ever dressed up as a woman?

Xu Heng, "???"

Wang Quanquan, "Ah... Women's clothing is something else! @冯和川, you kid cheated me!"

Feng Hechuan, "No! Senior, really not! You have to trust me! How could I betray you to wear women's clothes! I didn't even tell you or Loliyin, okay?"

What the hell!

Not only women's clothing!

Can still make a loli voice!

Feng Hechuan, "I didn't say anything about the fact that you were almost mistaken for the school belle at school."

Wang Quanquan, "*%...%￥#..."

Everyone said, "I'll go! Is university so exciting? Seniors please take me! That's Peking University!"

"You are really amazing!"

"You are the second most handsome student I have ever seen!"

"If someone can get into Peking University, everyone will put in all their energy to study hard, but you are good, playing games every day, and wearing women's clothes! 6666! Xiu'er, is that you?"

Wang Quanquan, "???"

"Why do I feel like I've joined a fake school bully group! @冯和川"

Feng Hechuan, "Ahem! Senior! This is mainly because you are so popular!"

Wang Quanquan, "You just said that I am the second chic, and the first is...?"

Group leader, "@许健!"

He Junfei, "@xuheng!"

Yang Kaixuan, "@xuheng!"

Feng Hechuan, "@许健，Senior, when you were in the third year of high school, you couldn't compare with this one. Although you didn't take Peking University seriously, at least you were serious and easy to learn in high school, but this one, Now that I have retired, I am only a sophomore in high school, so I eat, sleep, and play with my mobile phone."

"I'm bored, let's do some Mathematical Olympiad questions, some postgraduate questions to pass the time."

Wang Quanquan has studied the exam questions for graduate students, and the difficulty is still there for him.

But Feng Hechuan said that Xu Heng was only a sophomore in high school, so he was so awesome.

He still couldn't believe it.

"???"

"@许恒, how are you?"

Xu Heng didn't reply!

It's not that he didn't reply now, but was called away by the principal.

To the principal's office.

The principal, "Those three people are next door now! I'm so talkative! They're just stalking! They just want to hear you make the final decision!"

Xu Heng, "What three people?"

Xu Heng didn't even know that the other party had been here.

The headmaster slapped his head and told what happened last night.

"And, the vice president of the provincial basketball association is also on his way."

Xu Heng has long been familiar with the strangeness.

Your own strength is here!

It's strange that no one comes.

only……