"At nine o'clock, the first brick is stepped on twice!"

"At twelve o'clock, the second brick is stepped on four times!"

"At three o'clock, the third brick is stepped on six times!"

"At six o'clock, the fifth brick is stepped on nine times!"

……

Under the guidance of Joke, Miyayoshi methodically stepped on a few of the floor tiles in order, stepping on the side a few times at a while, and others couldn't see any rules at all.

If it weren't for being so anxious before watching the joke, begging Miyayoshi to open the secret door, I would have thought that joke was playing with Miyayoshi.

After five or six minutes of busy work, Joke's tone suddenly became a little excited: "The last step, three o'clock, seventy-nine bricks, step on ...... Wait a minute, I'll count again......"

I don't know if I'm too excited, but at the last step, Joke began to hesitate a little, not quite sure how many bricks to step on in the end.

"Yawn! It's two! Joke, you're miscalculated! It looks like you're going to have to go home and make up for your elementary school math lesson, you can make a mistake in such a simple math lesson! I'm really convinced!"

Miyayoshi yawned and couldn't help but say. However, although Miyayoshi knew the final answer, Miyayoshi did not step on the last brick, because he was not sure if he would touch any mechanism if he stepped on it.

"Two? Eisen, you don't understand, then what do you know? The secret door is the secret code, but it took me twenty days to guess it in conjunction with three of the top mathematicians in Europe today. Eisen, don't just open your mouth and disrupt my train of thought. In the current world, only one person knows the password to open the secret door. ”

Joke was displeased that Miyayoshi interrupted his train of thought, and he had to recalculate again, which was annoying!Joke also knew, especially at the last step, that there could be no mistakes, otherwise he would have to do it all over again, and he might also trigger some unknown mechanisms.

"Hehe! Why is it that only you know joke? Aren't there three mathematicians? I think anyone who can be called a mathematician, if they have to make a draft and take a calculator to calculate this password, then they can all die! joke doesn't believe it, and finally you step on it twice, so you can ask those three mathematicians? With your computing ability, I'm afraid you learned it from a physical education teacher. ”

Miyayoshi almost burst out laughing when he heard Joke say that he had joined forces with three top European mathematicians to study the ciphers of this secret door, and seriously suspected that Joke had invited three liar mathematicians. Just this broken code, and it will take twenty days to study?

"I already know the password, how can a second living person know the secret? Eisen, you don't know how I joke, do you? After they helped me figure out the password, I have sent them to study mathematics for God. Oops, I said Eisen, don't talk to me anymore, mess with my train of thought, once you step on the wrong password, it will be very troublesome! You calm down for a while! I need a little time to verify the last number, it's a bit big. ”

Joke sneered, those three stupid mathematicians, they are still too naïve, do they think that my joke's money is so easy to make? 100 million meters of gold? When I have time another day, I will personally burn it for you!

Of course, this Eisen, joke doesn't mind burning him an extra one.

Sizzle!

Gong Ji and the others on the other end of the phone also secretly took a breath of cold air, this joke actually killed three mathematicians? It was really ruthless! The face of this palace's secret door was really so important? If it hadn't broken in by mistake, who would have come home?

"The numbers are a bit big? Joke, even though I said that your math was taught by a physical education teacher, you are not convinced? You still kill people? Oh my God! This is not a peerless secret, elementary school students can see it at a glance! Isn't it that in the four rows of stone bricks that are opposite at the four corners of the diamond-shaped bricks, they start at nine o'clock, take turns clockwise, take turns in turn, starting from 1, and take all the prime numbers within 79, and step on them one by one, right? Such an obvious law, idiots know it. Huh!"

Miyayoshi smiled disdainfully, seeing that the joke also regarded the law of this password as a secret, and did not hesitate to kill the three mathematicians he brought, which was really funny. Those three mathematicians, liars or not, died unjustly enough.

Yang Hu and Mary watched from the side, listening to the joke and constantly reporting the number, completely confused about the law, but they didn't expect that Gong Ji really figured out the law early, and they all showed expressions of admiration.

Hu Feixue, Qiu Wushuang, and Dong Yun are relatively good at mathematics, and when they heard the law of numbers said by Gong Ji, they thought about it and found that it was really like this. I really can't imagine that this guy Miyayoshi is so sensitive to numbers. At first, I thought that Gong Ji was fooling joke again, but now it seems that Gong Ji really understands!

"Ahh......h How do you know that? Is this law really so obvious? Hmph! Even if you know the general pattern and know which piece to step on, you definitely don't know how many times to step on! As long as you step on it less or more, the password will be cleared in an instant, and the secret door will fail to open!"

Joke listened to Miyayoshi's words and studied them for twenty days, and said most of the passwords that he thought were very complicated, and he wanted to say in his heart that it was absolutely false not to be shocked.

But fortunately, this Eisen should only know half of the rules of the password, and the other half he must not know, and it is impossible for him to know.

"Ahaha! I can guess the first half, but how can I not guess the second half? This is even more obvious, I already knew it when you joked the fourth time, it was simpler than the first half. Within 79, there are a total of 22 prime numbers except for 1 and their own divisible numbers, and with the addition of the first number 1, there are 23 numbers in total. The number of steps = the nth term of a simple equal-difference series with a tolerance of 1 as the first term + the nth-1 prime number, and then take the single digit. According to this simple formula, it is very simple to count, the last number of times to step on is 23 + 79 = 102, and only take a single digit that is 2, so I just said that the last piece should be stepped on twice!

"Oops! I'm really tired, and I've accidentally become a tutor for you in elementary school math knowledge! But if you want to joke if you don't understand this, then I really can't do anything!"

Miyayoshi found that he seemed to be careless, talking a little too much, and there was no sound on the other end of the phone for a long time.

"Wow! I'm kneeling for you!"

"Is math so difficult for elementary school students now?"

Yang Hu, who was listening to the book of heaven next to him, knelt on the spot, and understood every word that Gong Ji said, but when he heard it together, his brain was mushy, and he felt so powerful. He Feng's father and daughter are similar, do you want to say that primary school students in China are so difficult to learn?

Hu Feixue and Qiu Wushuang listened very clearly, and it was indeed a very simple mathematical calculation. The difficulty is to find patterns and summarize patterns in a pile of messy numbers. Miyayoshi's reaction speed, they asked themselves how well. And as soon as you know the rules, then this so-called password is not worth mentioning, it is really very simple, and it is really similar to the addition problem of elementary school students, which Miyayoshi is not wrong.