readx;? Han Sheng from the Department of Electronics. Pen × fun × Pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ

Vice President of TMS Association of Department of Electronics, Vice Captain of Jianghai University Waist Drum Team.

His academic performance has been the first in the college for three years.

Just now, Cao Rong was also amazed at Cao Zhi's full score in six professional courses, but this guy's results were even more terrifying, and the full score homework reached fifteen, leaving three subjects, one 99 points, two 98 points, what concept? This guy was deducted a total of 5 points for all courses.

You must know that among the top students in Jianghai University, everyone compares how many points have been deducted in three years of college, it is said that all the courses add up to less than ten points, that is the real god-level master, Cao Zhi just now is not good, although six full marks, but the total number of points deducted is still a few ten, after all, the three years of courses add up to not more than twenty courses, and the deducted score is a single number, what is this concept? Probably this is this brother, the god of exams.

"Your grades are very strong, but your ......" Before Shi Sen finished speaking, Han Sheng interrupted domineeringly and said, "I'm sorry, you're not qualified enough to give me an interview, please ask that brother with a vicious mouth." ”

Shi Sen was annoyed.

Liu Chen said unceremoniously: "The undergraduate courses are very miscellaneous, just now Cao Zhi has achieved full marks in six major courses, which shows that he loves his major very much, and has studied very deeply, the exam is too easy for him, but you have achieved fifteen perfect marks, and even the "College Physics" that every science and engineering student has to study You got a full score in the exam, but your professional achievements are not outstanding, and the honors you have won are all extracurricular amateur classes, in my opinion, there is no technical content at all, so can I come to a conclusion that you just love exams and are addicted to full scores?"

This question is not sharp, the students waiting outside are shocked by Han Sheng's unnatural results, no one will pay attention to the others, eighteen courses are deducted five points, this is probably the first person in the Jianghai University exam, it is difficult to surpass, you must know that the difficulty of the exam of Jianghai University is much more difficult than that of the general pheasant university and even the general 211 university.

In some general universities, the teacher usually holds a book and reads it from beginning to end, and the scope is OK before the exam, so that so many students can fail the course, and their quality can be imagined.

It is no wonder that with the expansion of enrollment in China, the number of college students has suddenly increased, and the number of unemployed college students after graduation is everywhere, and the reason for this is the blind pursuit of undergraduate degrees.

And if the children of poor families in the countryside are admitted to general universities, their parents have great expectations, they don't know how to use bullshit, and the tuition fees for several years have spent their parents' hard-earned savings, and after graduation, they will gnaw at the old age, barely find a job in the city, barely support themselves, and buy a house and marry a daughter-in-law is even more out of reach。

Being asked by Liu Chen's question, Han Sheng was suddenly a little at a loss, he achieved such a result, in the eyes of his parents, he was undoubtedly very proud, relatives and friends knew that they would all praise him, and take him as a model for their children to learn, in the eyes of his classmates, he was a proud god-like existence, in the eyes of no mathematical scum, he was not qualified to kneel and lick.

But at this moment, he was a little confused, he thought about it, and replied honestly: "Since I was a child, I have understood a truth, 100 points in the exam will be praised by my parents and teachers, and the respect and envy of my classmates, so I have scored countless full marks in the exam from childhood to adulthood, and after I arrived at university, this kind of exam inertia still affects me, but whenever I take the exam, I want to get a full score, you are right, I don't love my major very much, just to get a full score and spend a lot of effort to study, and those three exams did not get a full score, I was sad for a long time." ”

In the words, Han Sheng was a little lonely, when I was proud of these achievements, I realized how ridiculous and naïve it was to spend so much time in order to get a full score, and I also wanted to change, but this inertia was too strong, and whenever I encountered an exam, I would still do it unconsciously.

Liu Chen also sighed, this is a typical good Chinese student, and the whole society is praising such a student, but what is the use of such a student? Getting a perfect score in the test of knowing and simple knowledge can only be said to be a waste of intelligence.

"You don't meet our requirements. ”

"As long as you say what you want, I will definitely do it. "Han Sheng's temperament is stubborn.

Originally, I was not interested in a student with a perfect score in the exam like Han Sheng, so he pondered for a moment and said: "To be honest, I don't really like students like you, since you are so persistent, I'll give you a chance, the most important thing in scientific research is actually the thinking ability of mental illness, I will come up with a few questions to test your thinking ability, each topic is five minutes, if you can make me satisfied, if you can't answer one of the questions, then I can only be sorry." ”

Han Sheng nodded firmly.

Liu Chen smiled: "Okay, then the first question will begin." ”

"How many times in a day do the hour and minute hands of the clock overlap?"

Han Sheng's first instinct after hearing the question was 24 times, but he immediately thought that it shouldn't be so simple, so he used all his brains to calculate it.

When the minute and hour hands start to move at 12:00, the minute hand of the clock makes T turns in the time of T hours, and the hour hand is T/12 turns, and the minute hand is a full turn ahead of the hour hand when the two watch hands coincide for the first time, /12+1, 2/11, that is, the first time the watch hands overlap at 12/11.

Replace the number of overlaps with n, and then replace t in the equation with 24, and we get: +n. Obviously, 2, i.e. two watch hands overlap 22 times in a day. They never coincide at 11 o'clock in the morning or afternoon, because they reach the 12 o'clock direction of the dial at the same time.

In just three minutes, Han Sheng gave the answer, 22 times.

Liu Chen nodded and said: "Yes, I got the answer in such a short time, this question is actually very simple, the difficulty lies in how to express the specific problem with mathematical formulas, this is a kind of thinking and expression ability, which is extremely important in high-level scientific research, so the next question, listen well." ”

"Crossing the bridge, four people need to get through a rickety suspension bridge at night. Unfortunately, they only had one torch, and the bridge was too dangerous for them to cross without the help of torches. Unfortunately, the bridge is not very strong, allowing at most two people to cross the bridge at the same time. The speed of the four people crossing the bridge varies: 1 minute, 2 minutes, 7 minutes, 10 minutes. Obviously, the time it takes for two people to cross the bridge at the same time depends on the slowest person. So, what's the shortest amount of time it will take them all to cross the bridge?"

Han Sheng's first thought was to use the fastest person to repeatedly cross the bridge to pick up and drop off others, which took 2+1+7+1+1 minutes. After only a few seconds of answering, Han Sheng immediately realized that this question might not be so simple, the shortest time must be less than 21 minutes, and there must be a faster way.

Han Sheng was so anxious that his mind was full of sweat, and the two people who had used it for the longest time must cross the bridge together, so as to save time, but if these two people crossed together, then it would take too long for one of them to send the torch to the other side, what should I do? Han Sheng was very nervous, and at this time his thinking had to jump and diverge, how to solve this problem? Can he leave a person on the other side of the bank with a fast tutorial in advance? Han Sheng was overjoyed in his heart, and finally had an answer.

"The minimum time should be 17 minutes. ”

"Oh, tell me about the idea of solving the problem. ”

"Let's cross the bridge with 1 and 2 first. It takes 2 minutes. Let 1 come back with a torch. It takes 1 minute. Let 7 and 10 cross the bridge together, it takes 10 minutes. Let 2 come back with torches. It takes 2 minutes. Finally, let 1 and 2 cross the bridge together. It takes 2 minutes. The total time taken in the end is 2+1+10+2+7 minutes. ”

"The thinking skills are really good. Liu Chen did not hesitate to praise Han Sheng, and then said: "What can be seen from this question? Resources should be optimally cooperated, the person who crosses the bridge for the longest 10 minutes must be with a partner for seven minutes, in order to maximize the use of the ten minutes needed to cross the bridge, and those who spend 1 minute and 2 minutes belong to the excellent talents of colleges and universities, and they need to be used repeatedly, what I want to tell you is what you are good at to maximize the use." ”

Han Sheng nodded thoughtfully, he realized that when Liu Chen gave him the question, he was also guiding the direction of his thinking, which had already subtly changed his perfect score inertia.

"The third question is: Is your husband having an affair? There are 100 couples in a small town, and they all observe a strange custom: if a wife finds out that her husband has betrayed her, she will kill her husband that night. The women in the small town know the secrets of other people's husbands, but they won't tell them. In other words, every woman only knows about the affairs of men other than her husband. Suddenly one day the mayor announces that at least one man has cheated on his wife, and assuming the mayor is telling the truth and everyone believes what the mayor says, then what will happen next?"

Han Sheng was confused when he heard this topic, and he couldn't grasp what the point of this topic was, so he could only use the exhaustive method in a hurry.

Let's assume that only one man betrayed his wife, and then the man's wife will suddenly find out that she doesn't know that any man is having an affair, while the other 99 women know that one man is betraying his wife, that is, the truth, and the only explanation for this is that there is only one man who has an affair, which is her husband. So she would kill her husband that night.

What if there were 2 men? At this time, 98 women in the town knew the truth, but the other 2 women only knew that 1 man was having an affair and couldn't be sure if their husbands were having an affair or not. So on the day the mayor announced the matter, the whole town was fine. But on the second day, when the two women find out that neither of them has executed their husbands, they realize that more than one man has had an affair. That is, there are 2 men who are having an affair, in this case, one of them must be his husband. As a result, the two women would execute their husbands at the same time at night.

Han Sheng's brain teaser and so on, can it be summed up that if there are n unfaithful husbands in the town, they will all be executed on the nth night after the mayor's announcement?

When the time came, Han Sheng was very unconfident to say his analysis, Liu Chen began to appreciate this student a little, although he had exam inertia, his thinking talent was indeed amazing, and he intended to cultivate him, and said with a smile: "Thinking ability is indeed different, if it is not for spending too much time in the pursuit of a perfect score in the exam, I believe you have achieved extraordinary results, this topic, what I want to tell you is: sometimes although there is only a very small amount of information, as long as you analyze it carefully, you can draw effective conclusions." ”

Of course, Han Sheng is not admitting defeat, judging from the three questions just now, Han Sheng already feels that he has gained a lot, and the potential of his thinking ability has been squeezed out all at once, so he nodded firmly.

"Thank you, I'd like to meet you if possible, you're amazing. ”

"There will be a chance later, you passed. ”

Han Sheng breathed a sigh of relief, only to realize that his back and forehead were covered with sweat.

As soon as he walked out, Sister Dou Dou greeted him and asked eagerly: "Classmate, you are very good, you have solved such a difficult problem on the spot, have you seen it before?"

Han Sheng looked at the eldest sister with a cold face, and said arrogantly: "It's the first time I've heard it, no matter what problems I encounter, I will go all out." ”

"But it's impossible to come up with it in such a short time?"

"That's you, not me. ”

Obviously impatient, Dou Dou didn't give up and asked, "Do you have any tricks?"

Han Sheng pointed to his brain, not wanting to bother her anymore.

In the room, Fang Zhigao said with a smile: "This guy is too powerful, if he focuses on scientific research, it is too terrifying." ”

Liu Chen shook his head and said: "If you give him a specific research direction and a specific problem, I believe he will be able to solve it, but he doesn't have the ability to find the problem by himself. ”

Shi Sen said sincerely: "Mr. Liu, you are so strong, you are driven crazy on BBS, I think these strongmen are coming for you, we are sitting here with the ears of the deaf, Master Fang, let's go back to the laboratory." ”

Fang Zhigao also nodded.

Liu Chen saw that the interview was in the second half, nodded in agreement, walked back to the chair, and said with a smile: "Why aren't there a few female students here, Jiang University girls are generally better than boys." ”

Cao Rong smiled: "I was scared by you." ”

"Is it that scary?"

"Yes, everyone says you're the number one tongue!" )