After greeting him with a smile, Zhang Qingyu nodded very friendly.

Xu Suisui looked at the third person and hesitated: "And..."

"I am Xin Zhu." Xin Zhu shrugged and continued.

Xu Suisui suddenly realized and smiled gently, "Hello, I often hear Academician Li mention you."

Xin Zhu said mercilessly: "I am not familiar with Li Bai. I have only met several times in the campus arena. What good things can he say to me?"

Xu Suisui smiled unchangedly and said, "Academician Li is not a person who can speak bad things behind his back. He has a high opinion of you and says that you have a high chance of living to the end."

Before Xin Zhu could speak, Lu Xi'an, who was beside him, became excited first, shouted and gestured, "Did he really say that? That dead face, he - can he really say such words?"

Xu Suisui nodded and added: "The reason why it is said that the 'probability is very high' is not that he will definitely survive to the end, because Academician Li believes that if an accident occurs, Xin Zhu will definitely die in front of Xia Yihui."

"That's right." Xin Zhu applauded and said happily: "This sentence is very correct."

Lucian turned his head instantly, looked at Xia Yihui with a heartfelt admiration, and said, "It turns out that you are the awesome one!"

Xia Yihui, who suddenly became the focus of everyone: "..."

He dared to bet for 50 cents, and Li Bai's words were definitely not good things. What does it mean that if he encounters an accident, Xin Zhu will definitely die in front of him? Does Li Bai look down on him so much and think that he will definitely not be able to protect Xin Zhu?

After several conversations, everyone quickly became familiar with each other.

The electronic sound subsequently reported several crawling crawlings. Fortunately, the place where everyone is staying is hidden and narrow, and it is a very safe cover, so these crawling crawling crawlings did not cause any practical harm to everyone.

Late at night, the electronic sound began to broadcast the list of survivors.

As the game progresses, the number of names on the survivor list is getting smaller and smaller. This time the serum battle is particularly fierce. Perhaps many infected people have not received timely assistance. There are more than 250 survivors the day before. Today, the number of survivors is no more than 200.

Xia Yihui heard the first name from the end with her only remaining belief, but she did not hear the three words "Mei Youqian".

But the good news is that Li Bai is still alive.

"Look, this is Li Bai's coordinates." Lu Xi'an stretched out his watch and pointed to an inconspicuous green light in the high school and said: "This was originally a red light with serum airdrop. I watched Li Bai's green light slowly approach the red light, and then the red light disappeared, and the green light did not move."

Xin Zhu frowned and said, "Since you have already obtained the serum, why haven't he come back yet?"

Lucian said: "Maybe it was trapped and unable to walk away, or maybe it was because he encountered something when he was taking the airdrop. The injury was too serious and it led to his coma. No matter what, his time has been delayed for too long. It is estimated that a person will not be able to walk back, and it will be very dangerous to stay there. In addition, Xu Suisui can't hold on for long..."

Xia Yihui frowned and interrupted him, saying bluntly: "What the hell do you want to say?"

Lu Xi'an paused and said, "I want to save Li Bai, what do you think?"

Xin Zhu stood up suddenly, hugged his arms and sneered, "So this is the reason why you saved us?"

Lucian nodded honestly: "Nothing wrong."

How could there be no goodwill in the infinite escape game? In addition, there is a shortage of supplies now, one more person means one more mouth. Even if Lucian is stupid and sweet, he will not be able to share his supplies with strangers openly.

Unless... he really wants others.

Xia Yihui looked around and Xu Suisui was red eyes and staring at him nervously. It was obvious that this proposal was decided by Xu Suisui and Lu Xi'an, and their only bargaining chip was to see if the three of them would participate in the rescue operation.

Thinking of this, Xia Yihui sighed.

He looked at Zhang Qingyu and asked, "Do you go and save Li Bai?"

Zhang Qingyu said: "If you want to go, I will accompany you."

Xin Zhu shouted anxiously: "Go away, who wants you to accompany you? Brother Xia is enough to have me by his side. I'll go! I'll go!"

Xia Yihui held his forehead: "Wait, I haven't figured out whether to save people."

Xin Zhu said: "Anyway, I will go wherever you go. Brother can think slowly, we are not in a hurry."

"But we are anxious." Lucian kept scratching his head irritably, saying: "If you wait any longer, maybe others will be almost out of reach."

This is not wrong, and no one knows what happened to Li Bai. Since he has obtained the serum airdrop, why is Li Bai still stuck in place and not returning here?

Xia Yi thought about it, took out paper and pen from the space, and wrote and painted on the ground.

"What are you writing?" Everyone looked closer curiously, and the iron chains on Xu Suisui's legs were ringing constantly.

Xia Yi turned around and said, "I don't feel bad if I know him for so long, if I don't save him."

After a moment of silence, a surprise smile appeared on Xu Suisui's face. She ran to Xia Yihui's side, almost burst into tears, and she was about to kneel down to thank her knees.

Xia Yihui quickly held the paper and pen to avoid it. When Xu Suisui was helped up by Lu Xi'an, he took a breath and said with a smile: "Don't thank me either. If you really want to thank me, just thank Li Bai. I always owe him a favor for the frozen man research."

Xu Suisui nodded repeatedly, wiped her tears excitedly, and couldn't speak at all.

Xia Yihui continued: "But you can save people, but we can't fight unprepared wars. Give me ten minutes, and I'll go after I finish writing."

Lucian came over with a blank expression, looked at the Arabic numerals on the paper, and said with a headache: "What are you writing about? Will it help our rescue plan?"

Xia Yimao did not answer and continued to write and draw.

After a while, Lucian came over again and said anxiously: "I don't think we should waste time here. Isn't there a proverb in your country that time is life!"

Xin Zhu kicked Lu Xi'an away and stopped him. Although the latter's martial arts was not weak, he glanced at Xin Zhu's eyes and Zhang Qingyu who looked at him coldly behind. He didn't dare to say more and had to wait in the back.

About ten minutes later, Xia Yihui began to finish his pen.

Lu Xi'an suddenly approached, and Xia Yihui smiled and raised the paper full of calculation formulas at him, saying: "Time is indeed life, but we in China have another saying - learn mathematics, physics and chemistry well and don't be afraid of traveling all over the world."

Lucian: “…?”

195

This sounded really ridiculous. Lu Xi'an was confused. After thinking about it, he didn't take this matter seriously. After settling down Xu Suisui, the four of them dressed up and set off immediately. After about 15 minutes, they walked around to the exit.

"Wait!" Lucian touched his body, his face changed, and he knocked his head and said, "I forgot to bring the spare gun, I have to go back and get it."

Zhang Qingyu and Xin Zhu walked in the front, and Xia Yihui was just between the two and Lu Xi'an. Hearing the words, he threw a gun without deciding his head and said, "The one Xin Zhu gave me in the first half of the night has not been used yet, you can take it first."

Lucian expressed his resistance with his eyebrows: "This kind of gun has too much recoil and is too close to the range. I really don't get used to it, so I have to go back and get my own."

Xia Yihui said: "No."

Lucian said sincerely: "I will run back very quickly and will not delay the rescue of people."

"Who cares if you will delay saving people?" Xia Yihui turned around and laughed, saying, "In ten minutes, this place will be surrounded by crawling species. If you don't leave now, you will have to wait until dawn to set off. Are you sure you want to turn back now?"

Lucian said skeptically: "How did you know that this place will be surrounded by crawling species?"

"The dynamic programming method in numbering." Xia Yihui said lightly: "Change the original problem into a similar sub-problem with similar meanings. When solving it, you can find the answer to the final original problem through many sub-problems."

Lucian said in a daze: "What does it mean?"

Xia Yihui omitted many steps and directly said the answer: "It means that in ten minutes, we will be surrounded by crawling species."

"No..." Lucian looked at the two people in front and said in shock: "What do you all believe in him?"

Zhang Qingyu didn't even turn his head back, and walked forward with his actions to express his position. Xin Zhu looked back, but his eyes really interpreted contempt and disgust too perfectly, so it would be better not to look back.

The situation is imminent, so it is definitely impossible to go back to get a spare gun now. Lucian sighed and shook his head, and had to put the new gun into the space, following him with doubts.

In less than ten minutes, everyone left the office building, and the back of the floor was surrounded by countless crawling seeds. Looking at the countless crawling seeds behind him, Lucian looked confused.

What made him even more confused was that this situation was obviously more than this time. When he reached a fork in the road, Lucian was so excited that he wanted to win a game. He confidently pointed to the road on the left and said: "I have walked both roads. There are only a few crawling seeds on the left, and there is a crawling seed nest on the right, which is very unsafe."

Xia Yi glanced at Lu Xi'an, raised his foot and walked towards the fork in the right.

Lu Xi'an was stunned and hesitated, "What kind of dynamic planning method is it?"

"This time it's a greedy algorithm." Xia Yihui shook his head and said: "This kind of algorithm requires computing people to perform calculation steps step by step. The most common thing is to make the optimal choice based on the current situation and not consider the overall situation."

"What???" Lucian was forced out of a non-native language in the dungeon game for the first time.

I followed Xia Yihui in a daze. Ten minutes later, the road on the right was unobstructed. The crawling nest had already become an empty nest because of the changes in the rules of the game.

"..." Lucian began to doubt life.

Arrive at school in the dark.

The environment is obviously becoming more and more crowded and harsh. It was previously very spacious near the office building, with only some plastic garbage and abandoned cars on the road. After getting close to the school, the garbage was no longer visible, and the items were countless flowers, plants and trees.

These trees are not ordinary trees, most of which exceed the standard size. The dog tail grass grows as high as half a person. Various wild flowers and grass develop horizontally and automatically without wind. There are towering trees that cannot be named, with strange-shaped and brightly colored fruits on their branches. I don’t know if they are poisonous or non-toxic.

If it weren't for the fact that she could still feel the cement material on the ground, Xia Yihui almost thought she was walking in the tropical jungle.

This time Lu Xi'an learned a lot of lessons. He first looked at Xia Yihui and said, "Originally this was the gate of the school. You see, there are words like "Xiang and XX high school on the stone tablet over there. According to the original route, Li Bai should be near the canteen now, but it is obvious... we can no longer tell where the teaching building is and where the canteen is. Can you use mathematical methods to figure out where to go?"

Xia Yihui also had a headache.

Various mathematical methods can only calculate the optimal solution of the distance, which can effectively avoid crawling crises and maximize the preservation of team strength. But now the road is gone, and if mathematics is useful, what else should the architect do?

He looked up at his watch, and the green light representing Li Bai's sign was still flickering stubbornly.

"Let's go straight."

Xia Yihui started to lead the way, and the other three followed without hesitation without doubt.

He cut down the trees along the road, flows when he meets lakes, and kills when he meets crawling seeds, which consumes a lot of energy. Gradually, Lucian felt something was wrong, and he looked at Xia Yihui suspiciously and said, "What mathematical calculation method are you using this time?"

"The exhaustive method is used." Xia Yihui began to open his eyes and complain: "This method is also called brute force cracking. It roughly means that for the suffering that is in front of you, first list the answers to all the problems, and then determine which problem is the best solution to it, and finally you can get the answer."

Lu Xi'an was stunned for a while, and he had a difficult understanding for a while. After the four of them cut off a few trees and passed through several rivers and killed a few crawling seeds, he suddenly reacted and said dumbfoundedly:

"But the current situation is simply impossible to list the best path. How do you determine that the path we are taking is the most correct one?"

Before Xia Yihui could speak, Xin Zhu, who was standing beside him, looked at Lu Xi'an and said, "Do you think there is still a way out now?"
To be continued...