All-round mathematician

Chapter 100: Looking Back in Time in the Time of Big Data
The two cooperated with each other with top-notch technology and tacit cooperation. After entering room 1201, the suspect's computer got the highest authority, as if no one was in the land.

In their eyes, the common protection software for the general public is full of loopholes, and they can pass through the firewall smoothly with just a few tricks. In less than a minute, a laptop and a desktop computer were controlled by two people respectively.

"Sb, do kids nowadays have any professional knowledge, ah." Zheng Kai almost collapsed, this was a slap in the face.

Taozi smiled awkwardly, and said, "70% chance, boss, your analysis is correct. Yohohoho."

Taozi also blushed a little. She was fighting for the highest authority just now, so she had to be cautious. She was still flustered and ready to be unconditionally counterattacked at any time. Facing the world's number one master, of course, no matter how careful you are, it's a pity ...the distance between fact and thought is too far.

"It's unbelievable, it's unbelievable, do children nowadays prefer to play games rather than learn something? With such a talent in mathematics, learning computers is a plus. How does his parents manage? What is his idea? Are you spending all your time with the little girl?"

Zheng Kai's eyes widened, cursing, why he is so abnormal, the first is because some people have talents and don't use them, it's pure violence, and he is sad and indignant at the depravity of people who belong to the same high IQ.

The second is envy, jealousy and hatred. He was obsessed with computers when he was young, and he didn't even know how to fool little girls.

It's thirty, and he hasn't left the order yet. At this point, he glanced at the big faces around him, and lamented for himself, and they may end up holding each other to account.

"Let me take a look at the big file first, and see what he is doing with the computer." Zheng Kai said.

"The notebook is a work computer. It may be his father's. There are a lot of electrical drawings in it. Everything is normal here, and there is nothing there."

Taozi's hands and feet were faster, and she flipped through it a few times casually, and everything in the notebook was laid out naked in front of her eyes.

Zheng Kai is in control of the desktop computer. He digs through the ground very carefully. Except for the system files, as long as the capacity of a folder exceeds 1G, he will check the contents.

Suddenly, a 15G hidden file appeared.

"Hmph, no matter how deep the hiding place is, I still caught you." Zheng Kai's eyes lit up, feeling that he had finally found an important clue, so he clicked on it.

A piece of video format file, the name is the island country female star that can be seen everywhere, Mrs. Ma, etc.

"Forget it, forget it, let's take a look at the log." Zheng Kai was furious, "I feel that my thinking is a bit wrong. I didn't take age into account. The possibility of this person is actually very small."

The log is the record of operating the computer, even this will not be cleared, needless to say, neither is getting started.

He looked directly from the beginning three months ago, and found that the frequency of use was very low, the number of times the computer was not turned on, and there was no abnormality at all except for small video screens that would be browsed at intervals.

After looking through the records of two months, Zheng Kai was impatient, and a search diary popped up.

"eye(M, N) software matrix, zeros(m, n) software matrix?"

In the past month, there have been more and more content related to this, with high browsing frequency and long time.

"What do you think?" Zheng Kai stopped and asked the woman beside him.

"It's hard to say. The technology is absolutely low and can't be lowered. I started to think that it was the master's intention to hide myself. Now..."

Taozi scratched her itch in distress: "It makes me even more difficult to judge. There must be some weirdness. Why does he have two computers on, and why doesn't he clear his browsing history? These two loopholes are too obvious. Didn't he just tell others , do you know something about the software?"

Zheng Kai was also very confused, and said: "These two kinds of software are based on mathematics, forget it, I am also confused now, let's put it aside for a while, let's take a look at the other major suspects."

Another person sent the list. This one is an executive of the top [-]. He has made a lot of moves and has been very active in the past half an hour.

"This American is very strange, there must be ghosts..."

----

Room 1201, after closing the door, hearing the sound of footsteps moving away, Yang Fan's sluggish expression immediately changed, and the coldness in his eyes rose sharply.

"Is there anything else you haven't considered?"

The three police officers took a total of 3 minutes and 21 seconds to enter the house. The first one was 176 cm tall and had a Chinese character face. It took 23 seconds to enter the parents' room, then 7 seconds to the balcony, back to the living room, and to the kitchen...

The second person, 178 cm tall, with protruding ears, went straight to the bathroom, stayed for 11 seconds, opened the cabinet in front of the mirror, entered his room in 26 seconds, and went to the kitchen...

The third person, with a height of 181 centimeters, has a Chinese character between eyebrows, enters the kitchen, takes 14 seconds to open the cabinet, and enters the bathroom...

The three entered the room, Yang Fan was sitting in the living room, was he really playing games?
No, he was observing everyone's path. The living room had a good view, and the path of the three of them was reviewed in his mind. It took a few seconds to hear the sound of some kind of cabinet being opened.

The frequency of footsteps is high and low, and the decibels of the sound of the cabinet door are recorded one by one.

There are three bedrooms, two living rooms and two bathrooms in the house. No one knows better than him where people can hide.

"Start reviewing from No.1, and walk his route again. The time used must be accurate to the second. The most important thing is whether there is any bugging equipment."

It's not that Yang Fan fell into some kind of delusional disorder, the police cars roared on the road, and how many police officers were hiding in the darkness, at this moment, he couldn't be too cautious.

"In the parents' room, there are three cabinets within reach."

Yang Fan turned it on and off, the sound was 21 decibels, No.1 made a sound of 25 decibels, he frowned: "Maybe they are in a hurry and use a lot of force, try it again."

Repeat twice to make sure the sound is accurate with the previous judgment, then the strength is mastered, he walked out of the room, timed again, and repeated the above steps.

He reviewed the route of the three of them, what they might be doing at that point, and which angle they would choose if they wanted to install wiretapping equipment.

He would pause in front of the cabinet in the room, and open the cabinet door with his arm: "The man pauses here for three seconds, flipping the coat inside to see if anyone is hiding."

Next, Yang Fan came to the window sill and opened the curtains: "The man came here and stayed for four seconds. He knew that it was impossible to hide people on the balcony. He obviously wanted to check the air conditioner outside the balcony."

Continue to walk along the route, go under the bed in the room, lie down, and turn on the flashlight function of the mobile phone: "There are a few shallow palm prints on the floor, which were left unintentionally when lying down. There is a dust scratch under the bed, which should be accidentally scratched by the mobile phone on the floor gone."

The study room is the key point, because the study room is small, there is no possibility of hiding people, the three of them left within ten seconds after entering, just to check the surface.

This series of actions is horrifying.

He single-mindedly analyzed the three people's thoughts and possible actions, while talking to himself to make sure.
The steps are the same, the movements are the same, and he doesn't need to see what the three police officers do when they enter the room. It's almost exactly the same just by hearing and calculation.

Organize data, imitate tracking, and feedback reality.

"At this moment, he is the god of data."

"It's just... time... backtracking."

(End of this chapter)