Subsequently, Ye Shuo asked others about his numbers.

"Li Yue, what is my number?"

Li Yue blinked: "Oh, I remember it's 300!"

"Okay, thank you Li Yue!" Ye Shuo nodded gratefully, "Your number is 256." ”

When he asked Liang Xia again, Liang Xia replied without thinking: "300!"

In this way, Ye Shuo was also relieved, Li Yue and Liang Xia did not have an electrocardiogram, even if they both wanted to deceive themselves, it was impossible to make up the same number at the same time. It seems that his number is really 300!

What else to say about 302...... As soon as he thought of Huangfu leaving, Ye Shuo rolled his eyes in disdain, that guy was really lying to me! If I believed him, then I would really be three hundred and two "two"!

On the other side, Huangfu Li also asked one by one, and finally asked about Taijing.

"It's 286. ”

It was the fourth number he'd heard right now.

"It's okay if you don't believe me. Seeing that Huangfu was hesitant to leave his face, Tang Taijing quickly said, "These numbers actually have some kind of pattern, I can explain them to you." First ......"

Huangfu suddenly became interested, and hurriedly waved his hand: "Don't tell me yet." I'm interested in its patterns and want to try to crack it myself. ”

Although arithmetic cannot directly improve cultivation, the process of studying and solving problems is particularly intelligent and brain-building. Learn the depths of the essence, and even the enemy's attack direction, move power, and even the laws of heaven and earth can be calculated through formulas.

It is precisely for this reason that when the students in the academy complain about those algebra and analytic geometry, there are many big people in the world, and when they have nothing to do, they will try to solve a few arithmetic problems. It's fun to be immersed in it.

Leaving the crowd, Huangfu Li found an open space to sit down alone, and listed all the four sets of numbers in his memory.

1、256

2、269

4、302

5、307

Looking at the surface of the numbers alone, there is really no pattern. Huangfu Li frowned, thinking hard.

"Alas, I asked four people, and I got four different numbers......"

Of these four different numbers, only one of them can be true, or all of them may be false.

But first of all, he can be sure that the "272" that Ye Shuo told him must be fake, and when he designed to deceive him, he once blurted out "two hundred and eighty", and with his scheming, he definitely did not say this kind of "lie within a lie" level. That is to say, whatever begins with two hundred and seventy is bound to be false.

And, judging from the forced braking he did at the time, that number must not be 280. The third place is between 1-9,

In this way, excluding Liang Xia's "275", there is only 283 that Li Yue told himself and 286 that Taijing told him. These two people, he is naturally more Xintang Taijing. But now he is more interested in finding out the hidden patterns in these numbers -

After leaving room for the third place, he filled in the two numbers separately, looked at the five sets of numbers that had been formed, and fell into deep thought again.

Of the five students in the hall, three had already found their way, leaving only Li Yue and Liang Xia in the corner.

"Li Yue, do you believe the number reported by Ye Shuo?" Liang Xia supported his forehead with one hand, looking distressed. It seems that the intellectual puzzles along the way have exhausted his brainpower.

Li Yue hesitated and recalled: "He reported to me that your number is 277, which is consistent with the number in my memory. Besides, the number he gave me was 256, so I'm still skeptical for the time being......"

"277, does it really match your memory?" Liang Xia immediately came to his senses and asked. After receiving Li Yue's affirmative reply, he angrily punched the ground: "Damn, what he reported to me was 269......"

"That's right, that makes sense!" Shaoqing, on Liang Xia's face, the anger gradually receded, but there was more sincere excitement, "He knows that you can also see my numbers, so there is no point in lying to you at this point." But about your own numbers......" he paused, "not 256, but 243!"

Li Yue covered her mouth in surprise: "You mean Ye Shuo lied?"

"No, it's 'that' Ye Shuo!" Li Yue's reaction was far greater than Liang Xia imagined, "You don't know, Tongtong privately nicknamed him Ye Bailian, that is, he is as pure as a white lotus, 'that' Ye Bailian will lie?!"

"It's no surprise. Liang Xia pulled the corners of his mouth a little embarrassed, "In the previous level, we cheated him so many points, he must want to pit some back!"

"I really know people and faces, but I don't know my heart!" Li Yue puffed up her face angrily, "Liang Xia, it's good that I discussed it with you!"

Time passed quietly, and at this point, it was time for a few people to enter the numbers.

There are five typing fields on the screen, and when everyone has finished typing, the verdict will appear automatically.

1, Li Yue (243) ×

2. Liang Xia (277) ×

"Why......" Ye Shuo looked at the two dazzling "×", it was even more heartbroken than losing points, "Didn't I already tell you the correct numbers?"

Li Yue and Liang Xia couldn't say anything, so they could only glare at each other fiercely and hung their heads silently.

3. Huangfu left (286) √

4. Ye Shuo (300) ×

5. √ of Taijing (307).

[Congratulations to No. 3 and No. 5 for answering correctly, you will be rewarded with points!]

"You ......" Ye Shuo looked at Li Yue and Liang Xia again, with a deep disappointment and anger in his eyes. Myself...... Deceived by them?

It turned out that as early as when Ye Shuo had just walked out of the room and had a conversation with Huangfu, Li Yue and Liang Xia on the other side had already reached a consensus, if Ye Shuo asked them, he would tell him the same number, so that he would definitely be convinced. As for Huangfu Li and Taijing, it is necessary to do the opposite.

When deceiving Ye Shuo, the two behaved very tacitly. But when it comes to separate digital confirmations afterwards, they also choose to deceive each other.

Although Li Yue is Shen Antong's best friend, when it comes to "deception and anti-deception", there is still a big difference after all. As for Liang Xia, he was completely deceived by Li Yue's simple appearance.

In this way, the trio caught in the lie were all wiped out.

"Speaking of Taijing, you don't seem to have spoken to anyone before?" Liang Xia suddenly remembered someone in his frustration, "You haven't asked us about your own numbers, so how did you enter them correctly?"

When he said this, Ye Shuo and Li Yue also thought so, and they both showed expressions of waiting for an answer.

"So as I've said a long time ago, there's a pattern to these numbers. Taijing's tone was unfazed. didn't sell much, took out a pen and paper directly, and motioned for everyone to approach.

"I'm going to show you how to do it. Take, for example, the numbers I got at the time. ”

1、256

2、269

3、286

4、302

"As you can see, the numbers are in a gradual increasing trend, so let's try to subtract the previous digit from the last digit first. ”

269-256=13

286-269=17

302-286=16

"Isn't this still irregular?" Ye Shuo muttered.

"What if that's the case?" Huang Fuli on the side took the initiative to pick up the pen and drew a circle in the position including the subtraction and the difference.

"Ah......" Li Yue seemed to see something. Since the last time she was in the control room, she saw the magic of Taijing cracking the code, and she became interested in arithmetic. During this time, I have been trying to learn on my own. Although it is still a half-ass, some simple addition, subtraction, multiplication and division can at least be calculated independently.

Looking at the subtraction and difference alone, we can see that there is a special relationship between them.

256，2+5+6=13

269，2+6+9=17

286，2+8+6=16

"The law of increasing numbers is that the number of hundreds, hundreds, tens, and units is added to the hundreds, and the numbers are added to the number. Tang Taijing continued to explain to everyone, "After drawing this rule, the fifth number is 302 + 3 + 2 = 307. ”

This law is not so unusual, to put it bluntly, but this process of exploration is really ingenious. After Taijing's explanation was finished, everyone looked at him, and their eyes were all convinced with a capital letter.

Then, they moved on to the fourth hurdle.

It's a slightly smaller space, without five separate rooms, and it's empty everywhere, and even the clues are not where they used to be.

"I said, is there really nothing here?" Li Yue complained loudly after a carpet search.

"That ......" Ye Shuo didn't know whether to say this or not, "Actually, I found a flashlight just now." But I wanted some kind of flashlight for the daylight, so I didn't take it out......"

Huang Fuli took the flashlight, fiddled with it twice, turned on the switch, and shone it against the wall.

The radiant light is not the familiar warm yellow, but an unfamiliar light purple.

At this moment, a miracle occurred, and a few lines of words appeared on the originally empty wall, shrouded in that lilac light. It seems to have been written in the morning, but when the flashlight is turned off, the words disappear again. Ye Shuo was compact in front of the wall, and he couldn't see the slightest trace.

"The text was written with a special fluorescent reagent. It only appears when exposed to a special light, which is also part of the trap. Huang Fuli explained.

Following the prompts in the text, everyone pressed the wall, and the cabinet in the corner automatically moved open, revealing a hidden display and key surface.

Obviously, this is asking people to enter their passwords. However, there is only a bar on the screen, and the number of digits of the password cannot be determined. And this time the key surface is quite complex, not only with 10 numbers, but also a series of letters. Of course, they won't be just decorations, which means that the final password will most likely be a mix of numbers and letters!

In addition to the typing field, click the toggle button to see a few lines of prompts.

1. Four-layer encryption.

2. Key: 3

3. Password: 10011, 10110, 11010, 10101, 100, 10110, 10010, 111

This string of dense 0,1 combinations makes everyone's heads bigger.

"Do you want us to add up these numbers?" Ye Shuo put forward the simplest idea, "If you add them separately, it is 3,3,3,3,1,3,2,3, so is the password 33331323?"

"Hey, isn't it four-layer encryption? That is to say, it has to be solved four times, how can it be so simple!" After Liang Xia reprimanded Ye Shuo, his head also swelled, "But the second line of prompts I don't understand, it says that it is four-layer encryption, how can it come out that the key is 3? Does it tell us that the four-layer encryption is deceptive, in fact, there are only three layers?"

"That, I said......" Li Yue looked at Taijing for help, "This 0 and 1, I remember it seems to be ......"

"Yes, binary. "It seems that he has already gotten the answer.

"What is binary?" Ye Shuo and Liang Xia leaned over two inquisitive faces.

It is a number system that is widely used in computing technology. That is, a number represented by two numbers, 0 and 1. "Tang Taijing has already taken out a pen and paper as he spoke, "Its base number is 2, the carry rule is 'every two into one', and the borrowing rule is 'borrow one as two'." ”

"The numbers we use are called 'decimal systems'. That is, 'full ten into one, full twenty into two', and so on. At the same time, between decimal and binary, the conversion can be done freely. ”

"The calculation method of binary to decimal is to calculate from the lowest bit, and the number on the bit is multiplied by the weight of the base, that is, the digit of 2 is subtracted by one square. For example, the second digit is 2 (2-1) square, which is 2, and the 8th digit is 2, and the 8th digit is 2 (8-1) is 128. Then add up all the calculated values. ”

As he spoke, he had already calculated the results on paper quickly.

19，22，26，21，4，22，18，7

"The maximum number of each number is not more than 26, corresponding to the letter, and the transformation is——"

SVZUDVRG

"So?" Ye Shuo frowned. Isn't that still gibberish?

"This is Caesar encryption. "The company is still doing rapid calculations on paper, and has not raised its head," is a symmetric encryption system that achieves encryption and decryption by moving letters by a certain number of digits. All letters in plaintext are offset backwards (or forwards) by a fixed number on the alphabet and replaced with ciphertext. ”

For example, when the offset is 3, all the letters A will be replaced with D, B will become E, and so on X will become A, Y will become B, Z will become C. This offset, often referred to as the key. ”

Now that the key has been given in the prompt, the value is 3, that is, all the letters are offset by 3 bits, then the corresponding transformation will become like this. ”

He held up the piece of paper and showed it to the crowd.

Clearcode table: ABCDEFGHIJKLMNOPQRSTUVXYZ

Password table: DEFGHIJKLMNOPQRSTUVXYZABC

"What we're trying to do now is to turn passwords into plain codes. That is, find the corresponding letter in the password table and replace it with a clear code. For example, the S in the password corresponds to P, and the V in the password corresponds to S, and after all of them are converted, it will become like this——"

PSRASOD

So far, the answer has already been reached. In order for you to understand, I will elaborate on it again. The last layer is fence encryption, the principle is to divide the plaintext to be encrypted into N groups, and then connect the first word of each group to form an irregular paragraph. ”

"Cracking the fence encryption is to divide it into two columns, which is what it becomes. ”

PSR

ASOD

Then read it upright. The result is P-A-S-S--O-R-D. ”

"What is this?" Ye Shuo still didn't understand.

"It's one of the languages of the heterogeneous plane, which means 'password'. ”

After Taijing finished speaking, he pressed these 8 letters directly on the keyboard.

The iron door at the end opened. A faint light shone from the other end of the door.

"I estimate that this level will directly kill many people......" Liang Xia whispered a smile to Li Yue.

However, before everyone could relax, in that light, several pairs of blood-red eyes suddenly appeared. Please Baidu "Throw Book Network" Thank you for your support!