After Yi Cheng refined the Nine Yin True Scriptures, his memory in Chinese and English improved by leaps and bounds.

In a Chinese class in the afternoon, Yi Cheng had already transcribed the entire "Song of Long Hatred":

The Han Emperor was heavy on the country, and Yuyu couldn't ask for it for many years. The Yang family has a girl who has just grown up, and she is raised in the deep boudoir. It is difficult to give up the natural beauty, and once chose the king's side. Looking back and smiling, the six palaces have no color.

……

Well, it's really well written, showing the feelings of a pair of infatuated men and women vividly and tear-jerking.

However, this emperor is lustful and weak, and Yi Cheng doesn't like it very much.

The generals and soldiers who put the blame for the war on women are even more rubbish.

Litter.

Yi Cheng finished annotating and then proceeded to transcribe the idiom dictionary.

In the practice of dictation in two or two teams, Yi Cheng's performance surprised Bai Jingxue.

"What medicine have you been taking lately? Why did my memory suddenly get better? Even the idiom of tongue and lips can be written? ”

The word tongue and lips is not within the scope of the syllabus, from the "Sui Shu Wang Xiaoji Biography": "In the embrace, ice and fire grease cream, between the intestines, wind and frost invade the bone marrow, encore tongue and lips, swallow and drink, the sound of evil moaning, and the coolness of enduring sourness and bitterness!" ”

This is the word that Xiaobai taught and received privately.

Yi Cheng frowned, not very satisfied with his dictation scores.

Nineteen of the twenty idioms are correct, and the wrong one is like a fish in the throat, and it is written as a stalk in the throat.

However, this is a significant improvement over his previous level.

He urgently needed a monthly exam to prove himself.

……

The next two classes are math lessons.

Math teacher Ran Bingqing came in with a sly smile and a stack of test papers.

Before she could speak, there was already a flood of grief below.

"Isn't it, it's another exam?"

"I feel like I'm going to die when I solve equations, solve sequences, and solve geometry recently......"

"I have a headache when I see the word "interpretation."

"I understand, my sister took me to play a game all night yesterday."

"It's over, it looks like it's been another sleepless night."

Teacher Ran put his fist to his mouth and coughed lightly, signaling everyone to be quiet.

"Everyone is in the third year of high school, take out some exam spirit, there are no exams everywhere in life, and today's small exam is just a preparation for the big exam in the future."

The classmates covered their faces in pain.

"Okay, the rest of the afternoon class is mine, you have two hours. The students in the first row passed the paper down. ”

Yi Cheng doesn't know what other schools are like, anyway, the purpose of this key middle school is to be fully prepared, practice in advance, and treat every exam as a college entrance examination.

In the first year of high school, the whole content of the third year of high school will be taught, and then there will be endless reviews and exams......

Therefore, although it is an in-class test, the format of the math paper is the same as that of the college entrance examination paper.

The questioner is Ran Bingqing, and the difficulty is only high, not low.

After the papers were handed out, the class went into battle mode.

It's a terrifying atmosphere that is not on the battlefield but more on the battlefield, requiring a great deal of concentration and not being able to hear anything but the wind and the sound of pen and paper rubbing.

Their enemies are the test papers, and at the same time themselves.

Ran Bingqing sat on the podium and drank water slowly, standing up from time to time to do activities, and by the way, he looked at the students' answers.

Yi Cheng silently did the math paper.

Teacher Ran is a soft on the outside and rigid on the inside, majoring in Tai Chi Mianzhang, so the questions are seemingly simple, but in fact, there is a mystery inside.

MULTIPLE-CHOICE ABABAABBA.

I don't know if it's because Mr. Ran's own body is limited, and he doesn't like answers greater than B very much, but Yi Cheng finished doing it with the two letters AB.

He was skeptical about this, and spent ten minutes checking it after completing the multiple-choice questions.

Three long and one short, choose the short.

I won't answer all the questions, and I will choose all C.

These two mantras clearly do not apply.

It's over, I don't know how many friends are going to suffer.

Yi Cheng shook his head, didn't care so much, and continued to answer the questions.

There is no need to write the solution process for fill-in-the-blank questions, as long as you fill in the answers, it will be a piece of cake for Yicheng.

After two clicks and solving the fill-in-the-blank question, Yi Cheng came to the solution question.

The first few questions were all of medium difficulty, which was so much higher than the college entrance examination mock paper, and Yi Cheng quickly solved them and came to the last question.

At this point, less than an hour had passed.

Yi Cheng was fast, but not the fastest, and it took him ten minutes to check the multiple-choice questions.

At this time, there are already several students in the top 20 of the whole grade in the math list, who have already killed the last question.

"It's over, it's over, Teacher Ran has fallen."

"Mom, does Mr. Ran also play chicken......

Hearing these voices, everyone curiously turned to the last question.

I saw that the title was written like this:

Assuming a Peace Elite solo match, the number of people entering the game at a time is 100, and the circle is reduced 8 times, for a total of 9 laps.

As shown in Figure A (A, the starting point cannot be put on the map, please make up for it by yourself.) ）

In order to take care of the player experience, you need to design the circle reduction rules:

1. At the bottom of the ranking, I hope that the next one can be taken care of.

2. The principle of circle reduction should take care of as many people as possible, and at the same time take care of players with lower ranking points to reduce their frustration.

3. The rules of the circle shrinkage need to change dynamically, taking into account the elimination rate of players.

(1) Please describe the circle shrinking rules in mathematical language.

(2) Suppose I was eliminated in the 78th place in the last hand, the number of kills was 0, and the survival time was 5 minutes and 26 seconds, so what is the probability of my initial destiny circle in the next hand? (The Circle of Destiny means that even if I stand still, the circle will shrink to me.)

Here are the rules of the Peace Elite game:

………

In order to take care of the children's shoes who have never played the chicken game, Mr. Ran intimately described the rules of eating chicken.

The entire classroom fell silent.

10 seconds passed......

"Mom, what the hell is this?"

"I can read every word, but I don't know what I'm trying to do with this question......

"It's over, I've been playing the game for so many years in vain......"

"I have a high rate of eating chicken, I'll ......"

"Teacher Ran, can you still let people eat chicken well, oh no, study hard?"

"These days, math is not good, and even playing games is despised......"

"Teacher Ran, if you need someone to take you, just look for me, I'm a marksman, but you can't abuse us in this way just because you were abused in the game!"

Ran Bingqing smiled slightly.

"Don't talk nonsense, if you can't answer this question, don't play chicken in the future."

“……”