After all the candidates got the test papers, they read the questions first. After all the time, many people gasped!

"The first question of today's final is even more difficult than the last question yesterday, and it deserves to be the final. ”

"This difficulty is comparable to the question type of the National Mathematics Olympiad!"

"It's so hard, I don't have a clue. ”

Many people couldn't help but whisper.

Xiao Jun also looked at the first question of the test paper, his brows furrowed.

(1) Let P(x) be a polynomial with integer coefficients where the exponent d is greater than 0, and n is the number of different integer roots of P(X)=1 or -1, then n is greater than or equal to d + 2.

"Shhh...... It's so hard! I don't know where to start. Xiao Jun searched for all the math knowledge he had learned, and found that he didn't know how to solve the problem at all, and he had no idea at all. And the five-day Olympiad knowledge that I learned a few days ago is completely useless.

Xiao Jun glanced at Yang Qianqian next to him, and found that she was also frowning slightly, and she couldn't write in her hand.

Ten minutes passed quickly.

Yang Qianqian still has no ideas, because this first question is very difficult!

She looked at Xiao Jun next to her, and saw that he didn't take this exam to heart at all. She didn't bother to ask the other party if there was such a stupid question as a solution idea.

Anyway, in her heart, it was in vain to ask. Yesterday's topic was easier than today, Xiao Jun had no ideas, and today's topic was even more difficult, and he must have no ideas.

"I can only rely on myself to get rid of distractions. Yang Qianqian retracted her gaze and took a deep breath to calm her originally somewhat coke oven mood.

At this time, Xiao Jun, who had nothing to do, also glanced left and right, and he found that all the contestants were currently thinking hard, and none of them had written down.

It seems that the topic of this final really made all the players feel the pressure.

"Enter the Xueba chat group. ”

Xiao Jun filmed all three questions and put them in the chat group.

Xiao Jun: @全体成员, old iron, come out to work. I want perfect marks for the answers to these three questions!

Sheldon was the first to jump out, and this thing is usually very idle.

Sheldon: Group leader, is it another Olympiad problem today?Hey~ These three Olympiad questions are quite difficult. It takes me about an hour or so to get a perfect answer.

There are often multiple ways to solve Olympiad problems, and it is generally very difficult to get a full score answer. Even in the International Mathematics Olympiad, there are very few answers that can get a perfect score. It's good that you can have ideas for solving problems and can do it. Because in this way, there are also points to take.

Takishima Comet: Perfect answer? Okay, I'll do it now!

Sheldon: Hey, hey, let's see who's doing it fast!

Takishima Comet: ......

Exiting the interface of the Xueba group, Xiao Jun saw that everyone outside still had no one to write, and one by one was still thinking and meditating. Many people almost bit their pens to pieces!

Proving this first question stumped many people.

Time is ticking.

Suddenly, a lot of people feel that the 4.5-hour exam is too short. Because now an hour has passed imperceptibly.

Finally, Xiao Jun saw that a group of players had finally begun to write.

"It's Jiangbei High School, it's so awesome? It takes an hour to find an idea to solve the problem?" Xiao Jun frowned. The secret saying in my heart is worthy of being one of the top 20 high schools in the country, and there are really many talents in it.

When he retracted his gaze, he was surprised to find that Yang Qianqian had also begun to write.

"So awesome?" Xiao Jun was a little surprised.

But in the next second, he was Aite by the person in the Xueba chat group.

"Enter the Xueba chat group" silently said in his heart, and the interface of the Xueba chat group appeared in front of him.

Sheldon: Group leader, we've written out the answers to all three questions. This time I worked with Comet Takishima and it was definitely the perfect answer!

Takishima Comet was speechless when he saw this, obviously you can't write the perfect answer in an hour, pull me to study it together, okay?

Xiao Jun: Full score answer?

Takishima Comet: That's right.

Xiao Jun: Haha, you guys are amazing, thank you.

After reading the answers, he instantly memorized them all, this is the ability to never forget.

When he quit the Xueba chat group, he saw that Yang Qianqian next to him had almost finished writing the answer to the first question.

"Huh~ I feel that this way of solving the problem is wrong? And the proof of each step is too far-fetched, and the answer after the proof is obviously wrong. After Xiao Jun took a look, he checked the answers he got from Takishima and found that Yang Qianqian seemed to have done something wrong.

Brush Brush Brush ......

"Whew~ Finally completed the first question. Yang Qianqian finally finished writing all the answers to the first question and breathed a sigh of relief.

"Beauty, it seems that you did the wrong thing in the first question!" At this time, Xiao Jun said lightly to Yang Qianqian.

"Well, what's wrong?" Yang Qianqian's brows tightened. He glared at Xiao Jun coldly. I secretly said in my heart, how do you know that I did something wrong? Do you know how to do this Olympiad problem? She almost consumed all her brain cells to come up with this kind of solution. Do you just say you're doing something wrong?

"It's all wrong!" Xiao Jun grinned.

Xiao Jun's words made Yang Qianqian even more unhappy, and said with a hint of mockery in her tone: "Since you said that I was wrong, would you do this question?"

"I have my own idea of how to solve the problem, but I don't know if the answer is right, how about I write it out and show it to you?" Xiao Jun smiled slightly, revealing a mouthful of white and neat teeth.

"Write, I'll see. Yang Qianqian looked at Xiao Jun with some surprise, he also has a solution idea?

After three or five minutes, Xiao Jun wrote the answer on the scratch paper.

"Now, look at it. ”

Yang Qianqian took the answer and looked at it carefully, at first she had a casual attitude, she felt that Xiao Jun's answer must be scribbled.

But when she looked at it for a minute, there was a hint of surprise on her face.

Two minutes later, her face was shocked!

Five minutes later, her whole body was impressed.

"You...... It's a perfect way to solve the problem, and I've never seen such a unique and perfect solution. Also, your evidence is very correct, and the answer is also very correct...... I, I did it wrong. Yang Qianqian raised her head and looked at Xiao Jundao in shock. Originally, she was still a little confident in her answer to the first question. But after reading Xiao Jun's answer, she realized that she had really done something wrong. If you don't say any answers, you will be wrong from the beginning.