Tingling on the scalp is generally an adjective used to describe a feeling or state of extreme fear or nervousness in a person.

But it is also a clinical phenomenon of the body - when stressed, tired, lack of sleep or other diseases, the scalp will feel overcharged.

Ye Ming felt his scalp tingle just now.

Not because of nervousness, not because of fear—though when that feeling arose, he felt fear.

"What did you just do?!" He stood on the bed and asked in his head.

"And you have achieved a wave-related resonance between dimensional waves and biocurrents."

“……”

Ye Ming bit his lip and sat down slowly after taking a few deep breaths.

"I'm going to sober up first."

"Okay, you answer me, what is Vibo?"

"I don't know."

“？？ Why can you achieve this resonance with me, but you don't know the principle? ”

In his head, Ita's voice sounded quietly: "The host can communicate with me, does the host know the principle?" ”

Ye Ming was stunned.

"Grass!"

Ita: "The tone is used to support the use, it doesn't mean that you think of me differently. ”

Ye Ming: "...... Seriously, do you know what your actions mean? ”

"Means I can interfere with your biocurrent in the form of resonance, and while I don't yet understand how that ability works, the drawings give me that ability."

"Yes, but I'll tell you more...... You can kill me, you know?! Ye Ming looked at the darkness in front of him, his eyes flickering constantly.

Being able to interfere with his own bioelectricity at will, he was really a little scared.

No matter how bad his biology is, he knows that the generation and circulation of bioelectricity is the hallmark of life and the basis for sustaining life.

And Ita is directly able to "interfere" with its own bioelectricity......

Leaving aside the principle, this fact alone was enough to make him tremble.

"I'm not going to kill you."

"Who knows? Is there still less blackened AI? ”

"My logic and mission is to assist you, and the premise of assistance is that you exist as an intelligent life being." Although Ita's voice was still as calm as AI, Ye Ming always had a hint of sarcasm when he listened to it.

So he thought about it and realized that Ita was telling the truth.

"Okay, let's get through this one first. In the future, I am not allowed to interfere with me without my permission or request. ”

"Yes."

"Then let's talk about it now." Ye Ming took a deep breath, and his eyes began to be full of anticipation: "You say, what's the use of it?" ”

"Whatever your biocurrent can achieve, I can do for you with your permission. But the knowledge and fragmented information you have given me so far are not enough to support my in-depth analysis of the issue. ”

Listening to Ita calmly state the facts, Ye Ming suddenly fell silent.

Without Ita analysis, he knew.

Brain-computer interface "that's it".

……

Four days later.

The triumph of the provincial RC team was treated like a hero.

The school's Youth League Committee and the student union appeared together, and the cameras of the school TV station kept shooting their faces from the plane until everyone completed a group photo in front of the school motto stone.

After finishing all this, Ye Ming returned to the dormitory, changed his clothes, and went straight to the library with his notebook on his back.

In the old position on the third floor, Senior Shen Ruhai and Qi and Mo were already waiting for him.

When Qi and Mo saw him, they first pursed their lips and smiled: "Congratulations." ”

"Repeat congratulations without counting the number of tons" - Qi and Mo learned the news of the RC team's victory in the Southern Tournament through the school's official account not long after the game ended four days ago, so they also sent a congratulatory WeChat, and asked for a treat by the way.

Ye Ming naturally agreed.

Seeing Shen Ruhai and Qi and Mo sitting opposite each other, he hesitated for a moment and decided to sit next to Qi and Mo.

What if Senior Shen's girlfriend comes?

"The school's ACM qualifiers are the day after tomorrow, right?" Ye Ming looked at Shen Ruhai while holding the notebook.

Shen Ruhai nodded lightly.

"So are we going to continue to brush the power buckle? Or brush luogu (professional ACM brush question website)? ”

"Force buckle, this exam question is basically selected from the force buckle, such a standard as five, three, two."

Qi and Mo added with a smile: "The reason why the school recommends the power buckle is entirely because of ...... If you brush the power button, it may be useful for ACM, but it will definitely be useful for future graduation exemptions. ”

"Okay, then I'll pick a random topic."

Ye Ming said that he directly opened the Likou website and chose a random question.

The lacquer and ink on the side whispered out the question stem.

"Find the median of two positive ordinal arrays."

"Given two positively ordered (small to large) arrays nums1 and nums2 of size m and n, respectively. Please find and return the median of these two positive ordinal arrays. The time complexity of the algorithm should be O(log (m+n)). ”

When he heard the question, Shen Ruhai's pupils instantly shrank.

At first glance, this question is just a median, not even easy.

But to meet the latter time complexity, it is not easy.

After thinking about it, he washed the paint and ink and asked softly, "What is the title number?" ”

"It seems to be 1178."

Shen Ruhai glanced at Ye Ming, also opened the website, and found the same question.

Then he began to analyze the topic.

"Hmm...... This problem is to find the median of two ordered arrays, and the time complexity is limited to O(log (m+n)), then this time complexity should be dichotomous. ”

Shen Ruhai quickly thought in his mind: "This problem is not difficult, but the difficulty lies in the time complexity, and it is necessary to define a function to find the specified element in two ordered arrays......"

Time passed second by second, and while he was still analyzing, Ye Ming on the opposite side had already knocked on the keyboard silently.

The eyes of lacquer and ink were also surprised.

After a while, Ye Ming's voice made Shen Ruhai wake up suddenly.

"The first question is good."

Shen Ruhai was slightly stunned, and when he realized that Ye Ming said that he was done, he got up and strode to Ye Ming's side.

Then, he saw that Ye Ming pressed the commit code.

Passed without a hitch.

Code with more than 80% execution efficiency and memory usage.

"I'll move on to the next question."

Ignoring Shen Ruhai, Ye Ming pressed another question.

This time, it's a moderately difficult question.

It took him just three minutes to complete the submission.

Just when he was about to ask another question for the third time, Shen Ruhai suddenly exhaled slowly.

"No need, you can brush Luogu, or ACM real questions."

Ye Ming raised his head and saw that the flush on Shen Ruhai's face was slowly dissipating, and there was an indescribable hint in his eyes. This means that there is amazement and relief.

"That'...... Can I stop brushing for a while? Ye Ming closed the notebook and spread his hands: "I've been a little busy lately." ”

"Are you busy with the RC National Championship?"

"It's not."

"That's?"

“…… Well, it's kind of a project, but don't worry, I'm sure I'm not going to hold you back. Ye Ming looked at the two with a smile.

Shen Ruhai and Qi and Mo looked at each other, and a wry smile appeared in their eyes at the same time.