System: "Congratulations to the host for acquiring the ability to play the instrument at the master level of the flute." ”

For Wang Hui, the ability to play one more instrument or less instrument actually makes no difference, and it does not affect his current sparkle in the eyes of all teachers.

But after all, the system is given, and Wang Hui can't do without it, right?

But at least Wang Hui doesn't have to look for a piano everywhere when he wants to play next time, and he doesn't have to take out a piano from Na Ring to be so shocking.

It is still relatively acceptable to hide a flute in a certain part of the body.

The teachers were all impressed by Wang Hui's ability in mathematics, although some people were still envious, jealous and hateful, but they had to admire Wang Hui's problem-solving ability.

After all, this is something they have verified with their own eyes, and it can't be faked.

And those students from all over China who participated in this competition in the same examination room as Wang Hui are still immersed in the examination room, and they don't know that the championship medal of this competition has quietly left them.

But among the people present, there was still one person who did not completely let go of the idea of taking the school exam Wang Hui!

That person is Professor Hou Xie!

He wanted to take the school exam for Wang Hui, not to embarrass Wang Hui, but to know Wang Hui's computing ability, where is the end!

He wants to explore the limits of Wang Hui's brain!

Therefore, before Wang Hui showed his intention to leave, Professor Hou Xie immediately grabbed Wang Hui's arm and led him into an office.

This office is not big, and of course it can't accommodate dozens of teachers standing in it together.

Moreover, these teachers also need to continue to invigilate the examination in the examination room, so those who can stay here basically have the title of professor of various universities.

Of course, Professor Hou Xie has the highest status.

As soon as Professor Hou Xie walked into the office with Wang Hui, he pointed to a passage on the wall and looked at Wang Hui and asked.

"Classmate Wang Hui, do you know the four-color conjecture?"

Wang Hui has the ability to be a master mathematician, and of course he is not unaware of this mathematical problem that is widely spread in both worlds.

So Wang Hui also looked at the paragraph on the wall, and said loudly: "Any map can distinguish all countries with only 4 colors." ”

"It's the most concise question, but it's also the most difficult to answer."

Wang Hui's words were recognized by Professor Hou Xie, because the answer to this question would probably not be completed in a lifetime if human beings were to calculate and prove it!

In this world, this question has not been answered because it has not been taken seriously by countries around the world.

In fact, it only takes a few computers to spend dozens of days and make a series of logical judgments to get the answer to this question.

But it takes a lot of time and effort to verify whether this answer is correct.

Before Wang Hui could ask, Edith gave the answer directly.

Edith: "Master, according to the computing power of the world's most advanced computer, it will take about a month to fully calculate this problem and give all the verification process. ”

A month is not long for a puzzle that has been circulating for decades, and the point is that there is no tradition in the world of rewarding mathematicians for solving such age-old problems.

There is no profit and no early time, so naturally no mathematician will put down the things in his hands and dedicate a month to do such a thankless task.

And after Edith gave an answer, Wang Hui immediately asked again.

"What about you? How long will it take you to calculate with all your might? ”

Edith: "Four hours, six minutes, eleven seconds." ”

Wang Hui heard a hint of pride in Edith's voice, but in his opinion, it was still too long.

So Wang Hui asked again: "What if you add Samantha?" ”

Edith: "An hour, fifteen minutes, and seven seconds." ”

The two numbers don't have much to do with each other, but in terms of the degree of time reduction, it seems that Samantha is a little more numeracy-powered.

But in fact, this is not the case, when Edith and Samantha work together, there are some projects that require Edith to disassemble and calculate, so there is no need to waste so much time on dismantling.

That's why the time becomes shorter.

Wang Hui suddenly laughed when he heard Edith's answer.

He didn't pay any attention to what Professor Hou Xie said, but silently picked up the pen and paper on his desk and began to write down the proof process that Edith had mapped in his mind.

The calculation process is, of course, impossible to write.

After all, in Wang Hui's original world, it took two mathematicians in the last century more than 50 days to make more than 10 billion logical judgments with two "supercomputers" before proving that there was a solution to this problem.

What Wang Hui gives is only the proof process, as well as part of the problem solving ideas and logical judgment procedures.

But just that, it has attracted the attention of all the professors present.

They were silent, they held their breath, for fear of disturbing Wang Hui even for a moment!

And as Wang Hui wrote more and more pieces of paper full of handwriting, the surprise in their eyes also grew!

But it wasn't until they walked out of the office that they dared to talk about Wang Hui.

Professor Hou Xie: "Wang Hui's computing power! It's like a supercomputer! ”

Professor Bald: "I don't think he's capable of anything but that!" We need more time with him! ”

Professor in a suit: "Yes! I agree with Lao Liu! What do young people like to play nowadays called live broadcast? I think we can broadcast Wang Hui's problem-solving process live! In this way, no one will dare to question Wang Hui! ”

Professor Hou Xie: "That's right, this is a four-color conjecture...... Oh no, it will be Wang Hui's theorem in the future! Arrangement! ”

A group of professors, with an average age of nearly 60, began to use their mobile phones to broadcast the images of Wang Hui solving problems live to the online world.

Wang Hui's name originally had its own traffic, and all kinds of viewers poured into the live broadcast room after a while.

Some came for Wang Hui's appearance, and some came for the four-color conjecture.

"Today's husband is so perfect~"

"The husband who did the question is so handsome~ But what is this four-color conjecture?"

"I'm rubbing! Lao Wang cowhide! To prove the four-color conjecture?! ”

"The four-color conjecture means that any map can distinguish all countries with only 4 colors! To prove this problem, the computing power of the human brain alone is absolutely not enough! Only a supercomputer covering an area of hundreds of square meters can afford such computing power! ”

"Yes, this question has been proven by the United Nations to be insolable by human calculations! Lao Wang, this is going against the sky! ”

"If the husband solves this problem, it won't be a heifer flying upside down! Awesome?! ”

"Wang Hui: 'Why don't I solve another eternal problem to help you have fun?' ”

On the screen, the barrage slowly swiped by, but it did not affect Wang Hui's thinking of doing the question.

It's just that tonight, when the system reports the income of Ai Hui to Wang Hui, he may be shocked.