Cartoonist's Dream

On March 3th, the second Saturday of the school term, Li Mu ushered in the first trial of the Olympic Mathematical Olympiad, taking his wife's sweet love into his bag.The test center is located in the classroom of the school, which belongs to the first class of four years, the second class of four years, and the third class of four years.

Mathematical Olympiad is not a formal exam within the teaching system. The exam time cannot conflict with the class time. It has always been arranged on Saturdays and Sundays. Special teachers carry sealed test paper bags to invigilate the exam.For this purpose, the reference student is required to pay for material fees, proctor fees, etc.

This kind of thing that requires money and brains is rarely done, so there are not many people in Pingnan Elementary School who participate in the Mathematical Olympiad.Of the twenty classes in the whole school, only three classes participated. Most of them were third grade students who were not afraid of tigers, and some of them were classmates who knew Li Mu.

They actively responded to Teacher Liu's call, and chatted and laughed before the exam.

But after they have tasted the horror of Mathematical Olympiad and the frustration of fiasco, I am afraid they will never do such thankless things again in the future.Although the registration fee for the preliminary competition was only 15 yuan, they took the Mathematical Olympiad exam with great interest, but their results were not satisfactory, and the candidates who took the exam would also feel very uncomfortable. [

What's more, Saturday and Sunday are the most precious days for students. They can sleep in late and play with their childhood sweethearts and boyfriends all day long.

Turning around to look at the tall figure outside, it was Da Shengnan who voluntarily worked overtime. She, who had no concept of overtime, was usually working on the construction site at this time.Now that she has a leisurely job, she is not used to being free on Saturdays and Sundays.She has no friends, only two younger sisters, and the idea of ​​not wanting to study has long been formed.

I was thinking about asking her to carry two tables to exercise her arm strength.

There was a "bang" sound from above the podium, and Limu turned his head reflexively, only to see a certain math teacher pressing the test paper with his hand, presumably it was the impact sound produced when putting the test paper to bring the examinee back to his senses.

The hour and minute hands of the clock on the blackboard were pointing at 9:50, and the invigilator took advantage of the moment when the students were concentrating, picked up the chalk and wrote a few words on the blackboard.

【Examination time 10:00－11:30】

"The exam lasts for one and a half hours. During the exam, we are not allowed to whisper or exchange answers. Those who go to the bathroom have to hand in their test papers..." he said.

Having said that, in fact, the invigilator for the preliminary round is not very strict. The invigilator is the math teacher of Pingnan Elementary School who got this opportunity to "earn extra money".If cheating is found, at most it will be a reminder by knocking on the table, and it will not reach the point of arresting and registering.Unless the invigilator has a deep hatred for a student, or has reached the point where he can bear it, he will be exempted from the exam qualification.

After all, it is a national selection competition, and it is impossible for the organizer to have enough invigilators to distribute to all parts of the country.In fact, there are not many teachers in the organizer. Most of them are managers, controlling this money-absorbing machine that will never lose money.The students are customers, the invigilators hired are migrant workers, the teachers who write the questions are designers, and the officials of the Education Bureau who have obtained the right to hold the competition from the government are the ultimate beneficiaries.

The more referees, the more money you can make. If you earn money, you will give some money to the higher-ups. Not only will you open up a smooth career, but you can also keep your position; if the number of referees is small, you will not lose money. Interests and hobbies”, the country should support the development of the Olympiad, and if you are in a state of making ends meet, you only need to apply for subsidies, but this will have an impact on your “political performance”.

A gust of spring breeze mixed with moisture blows towards you.The front and rear doors were open, and there was still a vacant seat for an invigilator by the door behind the classroom, and he was trying to drive Da Shengnan out of the corridor.

The invigilator on the podium cut open the file bag, counted the test papers and draft paper one by one, and handed them out.

There are a total of 12 questions in the Olympiad test paper, and there are very few questions, all of which are fill-in-the-blank questions.Limu stopped before he finished browsing through the test paper, picked up a pen and wrote the answer to a question without hesitation.

[8 Reverse the order of a four-digit number to get a new four-digit number. If the new number is 7992 larger than the original number, then the largest original number among all four-digit numbers that meet this condition is ________. 】

Is the primary school Olympiad difficult?

Li Mu found it quite difficult. When he was a child, he was always expected to pass the preliminaries but not the rematch in the Olympiad, but even the preliminaries can cause headaches for many adults.

I remember an experiment for adults to do Mathematical Olympiad. The test randomly selected 61 people from society to take the test, and 6 of them were middle school and university teachers. In the end, none of them passed the pass line, and the average score was only 2880 points.

——Is it really difficult?

Li Mu also felt that the method of doing the questions was wrong, and it was pure nonsense to find some people who had never done the Mathematical Olympiad questions to do the experiment. [

In fact, as long as you find the right method, you can easily guess the answer.

For example, in this question, as long as you see the keyword [four digits], you can guess the answer is [1999], although the accuracy rate cannot be guaranteed to reach 100%.At least it can reach 80% of the exam questions this year, and you can reverse-verify soon after you get the answer. If the answer is incorrect, guess "1998" or "2000".

After all, this year is 1999, and the answer limited to four digits must have a lot to do with "1999". What you need to do the Olympiad questions is actually a skilled way of thinking.

Jingle bell... the exam bell is ringing.

"You can start answering the questions now."

When the invigilator said this sentence, Li Mu had already completed two questions in a skip.

Anyway, it's not a serious foul. Even if you write questions in advance, you won't be confiscated even if you put them in the college entrance examination. You will be in danger after being called out by the teacher.

The opportunistic question was quickly finished, and Limu returned to the first question on the first page [Calculation: (1012023)*(012023034)-(1012023034)*(012023)________. 】

"The first question is always the simplest appetizer." Li Mu murmured.

The answer for oral calculation is 034

上面的算术式在他眼睛里其实是【1*（012023034）（012023）*（012023034）－（012023）*（012023034）－1*（012023）】

After eliminating the redundant part, it is very intuitive to see that the title is [(012023034)-(012023)] [034]

The questions gradually increased in difficulty from the first question. Except for a few accidents in the middle, Limu's writing was smooth in general.

No.11题理题【11某次数学竞赛共有五道题(满分不是100分),赵军只做对了(1)(2)(3)(4)题,得26分;钱广只做对了(1)(2)(3)(5)题,得25分;孙悦只做对了(1)(2)(4)(5)题,得26分;李彤只做对了(1)(3)(4)(5)题,得27分;周泉只做对了(2)(3)(4)(5)题,得28分;吴伟五题都对了,得________分】

Taking a closer look, Li Mu found that this question was very impressive. Didn't he draw it on scratch paper for most of the day when he was a child, and he just figured out the answer until the end of the exam!What was the answer back then?I can't remember, it's troublesome... I have to do it all over again.

Final answer【33】

In other words, look at the math competition that Zhao Jun, Qian Guang, Sun Yue, and Li Tong participated in...

"Xiao Ming doesn't seem to be able to play well in Mathematical Olympiad..." Li Mu couldn't help complaining to Xiao Ming, who has a high rate of appearance in various places, "Don't look at Xiao Ming, he is actually the highest achievement among all the children one!"

A few students next to him frowned and shot their eyes over, sending chills down Li Mu's back. Their eyes all had the meaning of "don't disturb our thinking".They were frowning and thinking hard with their pens. Obviously they were stumped on a certain question, and they couldn't even find a breakthrough after thinking for a long time.

Have a problem today?

Have!

Limu almost couldn't play the fifth question of looking at the picture to find the shadow. He was stuck for 30 minutes before he could start to solve the problem.But Li Mu didn't plan to remind them to solve the problems. After the preliminaries and the semi-finals, it would be embarrassing if they couldn't write a problem.In fact, the criticism of the Olympiad also stems from this. [

Only 5% of the students are suitable for participating in the Mathematical Olympiad, and people call it "superior IQ students".In fact, the higher the grades, the closer to this ratio when participating in the competition. Students who do not pass the exam have the self-knowledge not to participate in the competition, and most of the lower grades are students who were encouraged by the teacher to take a small test.

The problem with Mathematical Olympiads is that prestigious schools and private schools openly declare that when enrolling students, they look at the rankings of the Olympic competitions in various subjects as the hardware for admission, and some of them incorporate Mathematical Olympiad questions into the entrance test, so that the Olympic competition training that originally belonged to a small number of people directly affects ordinary students. student's fate.

Want to go to a prestigious school?Then apply for the Mathematical Olympiad and take the training course!

Mathematical Olympiad is so difficult that ordinary people can't afford it.

Training courses are very expensive, and ordinary people cannot afford them.

It is natural for the crowd to be excited, but as long as it is profitable, someone will start it and participate.This is the case with the rise of Aoying and Aowu. Although it is not as famous as Aoshu, it still makes parents flock to it and love it.

There is a saying: Mathematical Olympiad is a selection mechanism for the rich, so it must be banned!

The training fee for a training class with a poor reputation costs several hundred yuan, while a training class with a better reputation charges two to three thousand yuan.At the beginning, if he had enough money to sign up for a training class that was close to him, Limu might have passed the semi-finals. If he had signed up for a "top student training class" worth tens of thousands of yuan, he might have been able to go to the finals and win the prize.

In this way, although Limu is not a math genius, he can brush off real math geniuses.If it's just training, No.1 may be difficult to step on, but the ninth, tenth... or even the hundredth can still be stepped on.Occasionally, someone stepped up and stepped on them, and they all had to slip down in order.

But if you think about it carefully, the ban on Mathematical Olympiad is actually cutting off a fair channel for ordinary powerful and wealthy families.Ordinary people who can't attend the training class can spend more than a dozen yuan for materials to go back to study. The truly talented students will definitely not lose to the students in the training class, and the more difficult it is, the more perseverance they can hold.

Mathematical Olympiad can create opportunities for ordinary people to study in prestigious schools and get scholarships, but only 5% of extraordinary students can get this opportunity.The middle class is also unwilling to spend thousands of dollars to send their children to training courses, so public opinion is directed at the wealthy students who can take tens of thousands of dollars in training courses, completely ignoring the interests of the 5% gifted students.

In fact, the only thing that can compete between rich and poor students is their academic performance!

Many parents who cheered for the abolition of the UEC at the beginning found out that after the abolition of the UEC, parenting was prevalent, and fair educational opportunities were deprived instead!After the country cancels the Olympiad, the word "competition father or Olympiad" also remains only the word "competition father".

#Gaokao rural hukou can the only child get extra points?Okay, Dad will find a way to change your account for you.

#Ethnic minorities can also add points?Okay, your grandma is a Uyghur, so dad will ask someone to transfer your account right away.

Because of the poor conditions of minority schools, a bonus point system is hereby set up for the college entrance examination.Having said that, it sounds reasonable... But how embarrassing is this for the Han people in remote areas!If you consider the poor learning conditions, why do the first-tier cities have to raise the admission score for the second- and third-tier regions!

Nima, it's too far away.

Thinking back to Limu's years ago, it was actually a key university that was reluctantly admitted to by virtue of the "additional points for the only child in rural areas", and it was the actual beneficiary of the bonus point policy.

... However, his study conditions are not that bad. His high school is the fourth high school in the city, and the extra points and treatment are the performance of raising his evaluation.Many policies are not "cheating fathers" but "fighting fathers". What Limu was fighting for at the time was strength and luck.

It is inevitable to be distracted after thinking too long on a question. By the time Limu finished the last difficult problem, the exam time had passed one hour and 10 minutes, and the inspection took another 10 minutes. Finally, he pressed the time to hand in the test paper.