Fifteen minutes, just fifteen minutes have passed, Lin Haofeng has solved three difficult questions, an average of five minutes to solve one, this kind of speed, this kind of brainpower, even those of them who are teachers and principals can't catch up. (Baidu search rainbow network)

Because they know the difficulty of their questions, these are the problems in the Olympiad, even many college students are difficult to solve, but this kind of problem is actually under Lin Haofeng's hands, it only took fifteen minutes to solve three questions, so that these people looked at each other.

Lin Haofeng picked up the fourth question, this question was made by Lan Tianxiang, the principal, which involved some knowledge in physics, and Lan Tianxiang specially added a few data that did not have the slightest effect, as well as a sentence that could easily misunderstand other people's ideas, so Lin Haofeng just read the question, almost caught up with the sum of the first three questions.

Eleven minutes later, Lin Haofeng's lowered head suddenly raised, and then smiled at Lan Tianxiang, "Principal, you are really going to stumble on me, you almost stumped me." ”

Lan Tianxiang's old face froze slightly, and then immediately exclaimed: "You, you have already thought of the idea of solving the problem?" ”

"Yes, although there are quite a few pitfalls, and you have set up a few useless data and segments, but fortunately, I can see that if you want to remove the stems and branches, it is still obvious." Lin Haofeng nodded, and then responded confidently.

"Then you hurry up and answer the question." Lan Tianxiang's face was a little Jingdong, and he hurriedly urged Lin Haofeng to answer the question, and his wrinkled face was full of expectation.

"Headmaster, what's wrong with you?" Yuan Qingyu asked Lan Tianxiang in a low voice, and Shen Yong and Zhang Jinwei, who were next to him, also leaned close to their ears, wanting to solve their doubts.

"Hehe, what I came up with is a question that has stumped many professors." Lan Tianxiang pretended to be mysterious, and then looked at Lin Haofeng with a smile to solve the problem, Shen Yong and the others looked at each other, and they were even more curious about Lan Tianxiang's question.

This question is difficult to say, easy to say, as long as the person can grasp the main idea, go to its branches and leaves, and then if you are a little flexible, it is easy to find a way to solve the problem, but the process is also extremely cumbersome, even Lin Haofeng is also full of a piece of paper, front and back, and also drew a graphic, together with the reading time It took a total of 20 minutes, so, plus the previous three questions, Lin Haofeng spent a total of 45 minutes!

"Huh~" Lin Haofeng put down his pen, stretched, and then smiled at several teacher leaders, "Principal, teacher, I'm done." ”

"You're no longer checking checks?" Shen Yong glanced at Lin Haofeng and asked.

"No, check that is what is said to those students who are not confident, for me, even if I do something wrong, I don't regret it." Lin Haofeng shook his head and rejected Shen Yong's kindness.

When Lan Tianxiang heard Lin Haofeng's words, he immediately looked at Lin Haofeng with some surprise, he didn't expect this little guy to have such knowledge and experience at such a young age, he really can't underestimate him.

Lin Haofeng handed over the four answer sheets to Lan Tianxiang, and several people took back the questions they were in, and read them carefully and carefully one by one, but as they reviewed them, the same expressions appeared on the faces of the four people almost at the same time.

Astound! Horror! Unbelievable!

Is this really a question that an eighteen-year-old high school student answers? The solution is standardized and rigorous, there is no mistake, and every step is explained in words, clearly organized, such an answer is difficult for even some teachers to do, I didn't expect this to come from an eighteen-year-old high school student!

Shen Yong, Ji Pingyuan and Yuan Qingyu looked at the answer sheet in their hands, with a look of horror in their hearts, the hands holding the answer sheet were trembling, and their faces were difficult to hide their excitement.

And Lan Tianxiang, the old man with a frosty face was crying excitedly, looking at the answer sheet in his hand, he was a little speechless, the corners of his eyes were moist, a pair of heavy lips trembled, and the old eyes were full of endless excitement.

"I didn't expect it, I didn't expect it, it's amazing, good, good, good!" Lan Tianxiang looked at the answer sheet in his hand, his words were a little incoherent, and he said three good words in a row, which showed that he was extremely satisfied with Lin Haofeng's answer sheet.

A few people next to him were a little shocked when they saw that the old principal, who had always been calm, actually had such a gaffe, and then turned their eyes to the answer sheet in his hand.

"I wonder if I passed the headmaster's test?" Lin Haofeng smiled, looking at a few people, the smile on his face seemed to have seen the result.

"Passed, completely passed, just with this question, you passed, genius, Lin Haofeng, you really think that you are a mathematical genius, with your existence, why don't I worry about it!" Lan Tianxiang laughed loudly, and his old face was also remembered, his eyes were full of excitement and joy.

"Principal, this is ......" Shen Yong and the three glanced at the answer sheet in Lan Tianxiang's hand, and the latter generously handed them the answer sheet: "Take it, take a good look, this is the question answered by our genius boy Lin Haofeng!" It's perfect! ”

Shen Yong took the answer sheet, and several people gathered together, and after reading this question, they were shocked: "This, this is actually ......"

"Yes, this is a problem that has been painstakingly studied by dozens of mathematicians, also known as the 'Science Rubik's Cube', because it involves mathematics, physics, astronomy and quantum science, and solving this problem requires a very wide spatial imagination, so you know where my happiness lies, right?" Lan Tianxiang looked at a few people, and laughed.

"Then I wonder if the principal can tell me what the next topic is?" Lin Haofeng saw that Lan Tianxiang recognized his answer, so he asked.

"Absolutely!" Lan Tianxiang laughed, then took out a piece of paper from the drawer and handed it to Lin Haofeng.

Lin Haofeng took the piece of paper with a hint of doubt, and then looked at it seriously, what can make Lan Tianxiang and several high-level school leaders so solemn must not be so simple, right?

Lin Haofeng glanced at it, and his heart was suddenly stunned, this is actually a competition, and it is also a comprehensive quality competition for teenagers in China and Japan, and the venue is actually in N City!

"This, principal, you don't want to ......" Lin Haofeng looked at Lan Tianxiang with a stammering face, his face couldn't believe it, because this time the game was extraordinary, this is about the face of the country, once Huaxia loses to the island country of Ruben in this competition, it will be difficult for Huaxia to raise its head in the international arena in the future, and it will be difficult to call itself a big country!