Chapter 172: We are Black Wind Shuangsha!

Teacher Teng got the paper and looked at the title. It was all text without numbers, so he couldn't help being more curious.
　　 After a cursory reading, Mr. Teng understood the mystery. In fact, it is not the point whether the person with the green head jumps into the sea or not. The point is the tourists' words and whether his words have an impact on the people on the island.
of course,
　　 What the tourists say is not the point, but the point is... a message from the tourists.
　　 Unexpectedly!
　　 Xu Mang’s problem is so tricky!
　　 Nice!
　　 Because of Xu Mang’s question, Mr. Teng got a new inspiration. Maybe the Olympiad questions can be like this, focusing on logical thinking, rather than just taking into account the skills, who can participate in the provincial Olympiad contest, which is not excellent skills.
　　 "Professor Fuji?"
　　 "Brother Xu Mang's question...isn't it a bit too difficult?" Jin Leilei asked.
"Okay."
　　 Teacher Teng glanced at the five people present, and said silently: "I don't need to go to class anymore. You will figure out the mystery of this question for me these few days."
　　 Clams?
　　No...no class?
　　 Several people were taken aback, but they had no choice but to obey the orders silently.
　　 Teacher Teng left. After he saw Xu Mang’s question, he had a wonderful idea to let Xu Mang join the question group of the next provincial Olympiad.
　　...
"Do you want to die?"
　　 "I asked you to go to the jungle, what are you going to show me about?"
　　 "Into the bushes into the bushes!"
Xu Mang and Yang Xiaoman were playing King of Glory in the room. As before, Yang Xiaoman would become extremely irritable when he came into contact with competitive games. Xu Mang’s various behaviors in vain were scolded by Yang Xiaoman. Shower head.
five minutes later,
　　 Xu Mang was kicked out of bed by Yang Xiaoman. At this time, he was sitting alone on the toilet, brushing the vibrato.
　　Woman...
　　 Xu Mang sighed, especially for women like Yang Xiaoman, this mood became a bit too fast, they are like a blue sky, white clouds, clear sky, and a sudden storm, nowhere to hide is always unexpected...
Jingle Bell!
"Hey?"
　　 "Xu Mang!" Teacher Teng's voice came over the phone, "Do you know where my office is? At the end of the third floor, can you come over now?"
"Oh..."
　　 Xu Mang opened the toilet door and shouted at Yang Xiaoman, "Xiaoman... Teacher Teng asked me to go to his office."
　　 "Go!"
　　 Yang Xiaoman is still in anger. He had to win the last game, but was stunned by this guy. The e-sports queen, who has a very strong desire to beat the game, absolutely cannot bear this.
　　 soon,
　　 Xu Mang arrived at Mr. Teng’s office, pushed the door and walked in to see Mr. Teng in the office.
"sit down."
"Oh."
After a few minutes,
　　 Ms. Teng looked up at Xu Mang after finishing the service, and suddenly smiled: "Xu Mang...Unexpectedly, you can hide it so deeply. The title is okay. I've seen it. It's a bit deep and interesting!"
"of course!"
　　 "A genius!" Xu Mang said with a smug look: "Teacher Teng is not my bragging. The math papers for our school's final exam are all written by me. Guess how many points are in the school?"
　　"..."
　　 Teacher Teng glanced at Xu Mang. According to the topic he asked in the morning, it is estimated that it is... difficult, right?
　　 "Seventy minutes?"
"Mr. Teng... Am I the one who failed the classmates?" Xu Mang said solemnly, "I am such a ruthless and shameless person? Everyone wants to celebrate the New Year, and I can't do it because of reason. !"
　　 Teacher Teng was taken aback for a moment. Is he such a man of love and justice?
　　 "That..."
　　 "Twenty-nine nine." Xu Mang smiled.
　　"..."
　　 As expected!
　　 You are such a person!
　　 Teacher Teng smiled wryly: "Xu Mang, since you are good at writing questions like this, do you have any ideas? For the next provincial Olympiad, you will be the deputy leader of the question-making team and be responsible for review and question type development."
　　 Xu Mang was taken aback, and asked curiously: "Then I will study in the Department of Mathematics, Jiangda Institute of Technology?"
　　 "Also!" Teacher Teng nodded.
"not good!"
　　 "But it's okay to ask questions." Xu Mang smiled and said, "I'll join!"
　　 "That's OK, I have your contact information." Teacher Teng took a serious look at Xu Mang: "Xu Mang...You really don't come to our math department?"
"Ok."
　　 Hearing the answer again, Teacher Teng was still very sad, helpless... I had my heart turned to the bright moon, but the bright moon illuminates the ditch.
　　...
　　 Time goes through every minute and a second,
　　 Xu Mang and Yang Xiaoman's days at Jiangda are about to fall, and they will return to Ning City the day after tomorrow.
　　 This afternoon,
　　 Xu Mang came to the classroom of the Provincial Olympic Team. He was going to teach Jin Leilei the last lesson, and of course Yang Xiaoman followed.
　　 "Brother Xu Mang..."
　　 "Publish the answer!" Jin Leilei said painfully: "We feel like we are going to die."
　　 "Yes... Brother Xu Mang."
　　 "Publish the answer!"
　　 The cry for help came like a tide.
　　【Ge Jun Chuan Ren 2.0-Complete! 】
　　【Get Upgrade Card10】
　　 Xu Mang saw the system prompt, the task has been completed, it is almost time to announce the answer.
　　 "What do you want to know?" Xu Mang asked.
　　 "Did the words of the tourists bring any results?" Jin Leilei said, "We want to know this."
"Have!"
　　 Xu Mang nodded and said solemnly.
at this time,
The only female player in the team raised her hand and said, "Brother Xu Mang, before the tourists came, didn’t those islanders have known the existence of people with green heads? Not only did they know that the people with green heads were there, they also knew that there were ninety-nine green heads. The person overhead, what is the result of being a tourist?"
　　 "It's very simple."
"I know that you have a green head, I know that Jin Leilei is a green head, I know that less than a green head... I always know that the ninety-ninth person is a green head, but I don't know that I am a green head." Xu Mang said: " Then by analogy, tourists will let everyone know that there are people with green heads on the island."
The five people under 　　 were confused.
"It may be difficult for you to understand now, it's not a relationship!" Xu Mang continued: "The simplest situation is this... If there is only one person on the island with a green head, the result of the tourists' words is that he I didn't see anyone else with green heads, so I jumped into the sea the next day."
"in case..."
"There are two people with green heads on the island, I and Jin Leilei." Xu Mang pointed to himself and Jin Leilei: "At this time, what the tourists say will not bring results, because both I and Jin Leilei can see that each other is green. Top of the head, but I don’t know if Jin Leilei knows that I have a green head, and neither does Jin Leilei.

　　 "But the tourist has spoken... His speech has brought a different result, because I know, and Jin Leilei also knows that there are people with green heads on the island. What kind of result will this bring?"
"I will wait one day to see if Jin Leilei can jump into the sea. If he doesn't jump into the sea, it means that Jin Leilei has also seen the person with the green head." Xu Mang paused and continued: "I know that there is nothing but me and Jin Leilei, no one else has a green head. The only person with a green head that Jin Leilei sees is me."
　　 "Understand?" Xu Mang smiled.
　　 There is it!
　　 seems to touch the threshold!
　　 After Xu Mang’s explanation, the five members of the Provincial Olympic Team suddenly realized, but unfortunately... it was a little bit close.
"What if there are three people on the island with green heads? For example, I, Yu, and Jin Leilei." Xu Mang said: "In fact, they are all the same. At this time, tourists will not bring results, because all three people know that there are green heads. People, and I see that Yu and Jin Leilei can see each other’s eyes, but I don’t know if I have a green head."
"Because if I am not a green head, only Yu and Jin Leilei have a green head, and Yu doesn't know if Jin Leilei knows that there is a person with a green head on the island." Xu Mang coughed lightly and moistened his throat: "At this time This action made by the tourists will give me a result. I will wait two days to see if Yuhe Jin Leilei will jump into the sea. If I don’t jump into the sea for two days, I know Yuhe Jin Leilei will wait for me to jump into the sea again, so On the third day... the three of us will jump into the sea together."
　　 "According to this logical thinking, we can continue to deduct it until the Nth person with the green head."
　　 clear!
　　 I saw the other side!
　　 Jin Leilei followed the ideas provided by Xu Mang, and they generally understood.
　　 Then the problem comes again...
　　Why can the words of tourists bring a whole new result?
at this time,
　　 Yang Xiaoman suddenly said: "You want to know why tourists can produce results, right?"
　　 Jin Leilei nodded.
"it's actually really easy."
　　 "Because the tourist made an action-announcement." Yang Xiaoman said blankly: "Even if he said that everyone knows what he said, but his announcement made an important difference."
"Before the announcement, everyone just knew the content, and I don’t know if others knew it. After the announcement...everyone knows if they know it." Yang Xiaoman glanced at the five people: "The former is only a weak consensus, and the latter is a strong consensus. do you understand?"
　　 Jin Leilei shook their heads and began to feel confused again.
　　 "Before the tourists came, it was a weak consensus that there were people with green heads on the island. However, when the tourists were announced, the weak consensus became a strong consensus, which contained more information, which led to more consequences."
　　 "Do you understand now?" Yang Xiaoman asked.
Oh!
understood!
　　 It's too special!
　　 Jin Leilei looked at Xu Mang and Yang Xiaoman, their eyes glowing with worship.
"About weak consensus and strong consensus, let me give you an example." Yang Xiaoman smiled and said: "You all know "The Emperor's New Clothes"? The emperor did not wear clothes. This is a weak consensus in itself, but after the child said it , Has become a strong consensus."
　　"..."
　　"..."
　　"..."
　　 Being a man is boring!
　　 is really meaningless!
　　 Why do monsters like Xu Mang and Xiaoman exist in the world?
　　 The five Jin Leilei are speechless. Although they think that there is a gap between them and Xu Mang and Yang Xiaoman, they never expected that the gap would be so huge.
　　 "Brother Xu Mang~EbookFREE.me~Sister Xiaoman?" Jin Leilei said helplessly: "You are so good, aren't you afraid of others' revenge?"
　　 "???"
　　 "???"
　　 The two stunned for a moment and looked at each other.
"are you scared?"
　　 "Don't be afraid."
　　 "I'm not afraid."
　　 Xu Mang turned his head to look at Jin Leilei, and said seriously: "Don't be afraid, because we are both black and wind!"
　　 Jin Leilei: 囧
　　...
　　 Evening,
　　 Yang Xiaoman stayed in Xu Mang’s room, thinking about a very important thing, that is, the nicknames of himself and Yang Xiaoman were too ugly.
　　 Black Wind Shuangsha?
　　What a ghost nickname!
"Ugh?"
　　 "What do you think?" Yang Xiaoman glanced at Xu Mang who was in a daze.
　　 "Wait a minute!"
　　 "I have something to do." Xu Mang said.
　　 Xu Mang looked at the data on his system.
　　 Upgrade card: 55
at last,
　　 can be upgraded!
　　 Xu Mang is no nonsense, just click on the attribute-Zhi.
　　 Upgrade again!
　　My intelligence!
　　......