Chapter 446

"Then we'll hand over these nine. The classmate in charge of the record flipped through the recorded certification process and said to the two.

"Well, nine is definitely enough. If you can't get the first place in this way, let alone squeeze in a tent for one night, even if it is 10,000 cold outside, I will be convinced. The other nodded.

"Cheng Nuo, what do you see?" the two reached an agreement, but still gave the final decision to Cheng Nuo.

Cheng Nuo pondered for a few seconds, "There's still enough time, add a few more, I always feel that nine is not safe." ”

Seeing that the two of them were about to speak, Cheng Nuo hurried to continue before this, "Although there is no proof method for the new direction, it is not difficult if it is only the transformation of the proof method in Ou Li. ”

The two of them looked overjoyed at the same time.

Although in their opinion, nine proofs are enough to crush the other schools, but if there are a few more, they have no reason to refuse.

No one can overdo it!

With the last five minutes left in the half hour, Cheng Nuo saw that many school students had begun to struggle in the end.

Cheng Nuo didn't know how many proof methods they had come up with, and with the idea that the lion and the rabbit would also use all their strength, Cheng Nuo was not prepared to leave any hands.

"There are many variations of Ulrich's proof, but all of them are the same, and the rest is just a multiplication of a string of integers and a little addition and subtraction. I'll just briefly mention two. ”

"Suppose there are only a finite number of primes p1,... , pn, so that N = p1··· pn, then all pi (i = 1,... , n) are all prime factors of N. Due to p1,... , pn is all primes, one of which must be a prime factor of N - 1, let it be pr (1 ≤ r ≤ n), then pr is a prime factor of N and N - 1 at the same time, and thus the difference between the two - that is, 1, but this is impossible, so there are infinitely many primes. ”

"The other is even simpler, the prime factor of n!+ 1 must be greater than n, otherwise it will be divided by n!+ 1 and the remaining 1 cannot be a prime factor, because n is arbitrary, so no matter how many primes have been found, a larger number can be found, so there are infinitely many primes. ”

Cheng Nuo said as the classmate jotted it down on a piece of paper.

After memorizing it, I checked it back and forth several times from beginning to end, and found that it was correct, and the thirty minutes passed just right.

Mr. Edward stepped out of a tent with his hands behind his back, "When the time comes, each of you will send a representative to hand over to me the method of proof that you have explored, and I will judge whether the method is correct or not, and rank it according to the number." If the quantity is the same, the quality will be preferred. ”

"Remember, don't forget to write the name of your school. I'll need a while, you guys start the campfire dinner first, fill your stomachs, and I'll announce the results when the dinner is over. ”

After receiving the answers from fifteen schools, Edward hurried back to the tent with his neck chained and his teeth chattering.

After a few seconds of silence around the campfire, the young people gathered around the campfire brought out their food and began their dinner.

The atmosphere of the campfire dinner was supposed to be happy and boisterous, but now it seems lifeless. All of them had worried looks, expecting and nervous in their hearts.

The mood is no different from when I was in middle school, waiting for the scores to be announced.

Eating food that is obviously delicious, but it tastes like chewing wax. From time to time, his eyes looked at the tent where Mr. Edward was.

Of course, there is one school that is an exception.

Cheng Nuo sat on the grass, holding a big fat goose, and gnawed on the oily beauty in his hands.

The other two also ate with relish, and they didn't have the worry on their faces like the rest.

"Cheng Nuo, this is Hamon ham, our local specialty, you can taste it!"

"This is the number one steak, it has been fried, Cheng Nuo, you can also taste it. ”

As the "number one hero", the two kept being courteous to Cheng Nuo.

While eating, Cheng Nuo listened attentively to the discussions of others.

"Hey Hank, how is your school, come up with a few proofs?"

"Not much, not much, only five, it's a bit suspenseful to enter the top three!"

"Hang a fart, I just asked a circle, and the most is only five like you, most of them are three or four, and I don't know if the four of our school can win by quality. Anyway, you're stable anyway. ”

"It's not nine out of ten, if it's wrong, then I can only laugh and be generous. ”

Although he said this, there was no thought or worry on his face.

Knowing that most schools are only coming up with four or five proofs, then their school is basically in the top three.

"Hey, Denton, how is the situation at your Cambridge University, the three of us have come up with six methods, and this time I guess you Cambridge will lose. It was a student from Oxford University who spoke, and he came to Cambridge and said with a smile.

Denton, the student in charge of the record, just smiled faintly, "No. We're not going to lose. ”

"Oh, who gave you so much confidence, could it be you, a classmate of Huaguo. Although I have to admit that he did perform well in the first round, it was only a Rubik's Cube after all, and there were many Rubik's Cube novices among us who took advantage of him, a Rubik's Cube veteran. ”

"But this time it's different, it's a matter of pure mathematics, not something that can be won by chance. I'm looking forward to it now, looking forward to the day when his true form will be revealed. The man laughed.

"Malego, you ......" Denton was about to stand up and argue with Malego.

Cheng Nuo smiled and said, "Senior Denton, forget it, Mr. Edward is out." ”

Sure enough, Mr. Edward stepped out of the tent with a piece of paper in his hand.

With a sigh of relief, driving away the cold from his hands, Mr. Edward looked around at the crowd, "The results are out. ”

"I am quite satisfied with the answers you have submitted. You are worthy of being the pride of the two countries, and even the worst team proved three proofs in half an hour. ”

Those few schools who only handed in three proof methods, but still had a chance in their hearts, couldn't help but turn pale.

When Mr. Edward said this, it meant that they had no chance of winning at all.

"I won't say too much superfluous, I think you have been looking forward to the results for a long time, so I will directly announce the ranking. ”

Edward announced directly from the fourth place, "Fourth place, Imperial College London, came up with five proofs! All correct!"

"Third place, Oxford University, proposed six proofs, but one of them was wrong!"

Cheng Nuo's face stiffened when he saw the Oxford student named Malego.

Although the third place is also considered to be a win, their goal is obviously to go to the first place, and they only get a third place, so it is no wonder that they are not uncomfortable.

"Second place, the University of Bonn, came up with six proofs, all correct!"

Malego glanced at the three of them at Cambridge, and his heart suddenly felt better again.

Although I was not very happy to finish third, I saw that Cambridge University could not even rank in the top four, and that depression was swept away.

As Malego pondered, he heard Edward proclaim in a very high voice:

"First place, Cambridge University, proposed eleven proofs, all of which were correctly !!"