From black technology to super engineering

Scalp tingling is generally an adjective used to describe a person's feeling or state of extreme fear or tension.

But it is also a clinical phenomenon of the body - when you are stressed, tired, lack of sleep or other diseases, the scalp will have an electrical reaction.

Ye Ming felt his scalp numb just now.

It wasn't nervousness, nor fear—although he felt fear when he sensed the reaction.

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

"I realized a wave-related resonance between dimensional waves and biological currents with you."

"..."

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

"I need to wake up first."

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

"have no idea."

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

In my mind, 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 of voice is helpful, it doesn't mean that you have unreasonable thoughts about me."

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

"It means that I can interfere with your biological current in the form of resonance. Although I don't understand the principle of this ability yet, the blueprint has given me this ability."

"That's right, but I still want to tell you...you can kill me, do you understand?!" Ye Ming looked into the darkness ahead, his eyes flickering.

He was really a little scared just now.

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

And Ita can directly "interfere" with his own bioelectricity...

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

"I won't kill you."

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

"My logic and mission is to assist you, and the premise of assisting is that you exist as an intelligent life form." Although Ita's voice was still as calm as AI, Ye Ming always heard a little irony.

So he thought about it seriously and found that what Ita said was true.

"Okay, let's expose this article first. In the future, without my permission or request, you are not allowed to interfere with me in any way."

"yes."

"Then let's discuss it now." Ye Ming took a deep breath, and his eyes began to look full of anticipation: "Tell me, what's the use of it?"

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

Hearing Ita calmly stated the facts, Ye Ming suddenly fell silent.

Without Ita analysis, he knew.

The brain-computer interface is "just".

...

Four days later.

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

The school youth league committee and the student union all appeared on the stage, and the camera of the school TV station kept filming from the moment they got off the plane until everyone took a group photo in front of the school motto stone.

After finishing all this work, Ye Ming went back 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 had been waiting for him for a long time.

When Qi Yumo saw him, he pursed his lips and smiled: "Congratulations."

"Repeated congratulations don't count the number of pauses" - Qi and Mo had learned of the news that the RC team had won the South Championship through the school's official account not long after the competition four days ago, so they also sent a congratulatory WeChat message and asked for a pause dinner.

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 qualifier will be held the day after tomorrow, right?" Ye Ming looked at Shen Ruhai while holding a notebook.

Shen Ruhai nodded slightly.

"Then should we continue to use Likou? Or use Luogu (a professional ACM website for solving questions)?"

"Let's buckle, this time the exam questions are basically selected from the top of Likou, the standard of 532."

Qi Yumo added with a smile: "The reason why the school recommends Likou is entirely because... If you use Likou, it may be useful for ACM, but it will definitely be useful for future interviews."

"Okay, then I'll choose the topic randomly."

Ye Ming opened the Likou website directly after speaking, and chose a random question.

Qi and Mo at the side read out the title in a low voice.

"Finds the median of two ordinal arrays."

"Given two positive sequence (from small to large) arrays nums1 and nums2 of sizes m and n respectively. Please find and return the median of these two positive sequence arrays. The time complexity of the algorithm should be O( log (m+n))."

When hearing the question request, Shen Ruhai's pupils shrank instantly.

At first glance, this question is just finding a median, and it is not even a simple difficulty.

But to satisfy the latter time complexity, it is not simple and difficult.

After thinking for a while, he rushed to Qi and Mo and asked softly: "What's the serial number of the topic?"

"It seems to be 1178."

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

Then, he began to analyze the meaning of the question.

"Well... this question is to find the median of two ordered arrays, and the time complexity is limited to O(log (m+n)), so this time complexity should be the dichotomy method."

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

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

Qi and Mo's eyes also became surprised.

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

"The first question is ready."

Shen Ruhai was slightly taken aback. When he realized that Ye Ming said he was done, he stood up and strode to Ye Ming's side in a big stride.

Then, he saw that Ye Ming pressed submit code.

successfully passed.

Execution efficiency and memory usage both exceed 80% of the code.

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

Ignoring Shen Ruhai, Ye Ming pressed the button to ask another question.

This time, it is a moderately difficult question.

He completed the submission in just three minutes.

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

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

Ye Ming looked up, and saw that the blush on Shen Ruhai's face was slowly dissipating, and there was an inexplicable meaning in his eyes. This means, there is a sense of loss, but also relief.

"Then... can I stop reading for a while?" Ye Ming closed his notebook and spread his hands: "I've been a little busy recently."

"Are you busy with the RC National Competition?"

"no."

"That is?"

"...Well, it's a project, but don't worry, I won't hold you back." Ye Ming looked at the two with a smile.

Shen Ruhai and Qi and Mo looked at each other, with wry smiles in their eyes at the same time.

Slow down?

Who is holding back who...