Chapter 344

On February 14, at 8 o'clock in New York time and 8 o'clock in Kyoto time, the 22nd American Global Collegiate Mathematical Contest in Modeling officially opened.

As mentioned before, this is the largest number of participants in the history of the event.

More than 10,000 teams from more than 30 countries and regions around the world participated in the competition.

Except for the fact that the competition lasts for one day and the language of the modeling paper must be English, the other rules are no different from the national competition.

Thirty minutes before the start of the game, Cheng Nuo met the other two teammates arranged for him by the academy again.

When the two saw Cheng Nuo, they couldn't help but be so angry that the roots of their teeth were a little itchy.

One of them asked, "Cheng Nuo, what did you do two days ago, didn't you say that a few days before the start of the competition, we should find a set of modeling problems and grind them together?"

Cheng Nuo clasped his hands together, "I'm sorry, I'm sorry, I've been busy with a very important matter in the past two days, so I have to push this link off." ”

"However, I don't think it will have any impact on our final results. Cheng Nuo added with a faint smile.

Another teammate looked at Cheng Nuo's confident look and couldn't help but smile bitterly.

This guy, where did he get his confidence from?

You know, it seems like this is only their second meeting since they formed the team.

In other words, the degree of cooperation between the three of them is almost zero.

Even if he knew that Cheng Nuo was very strong, could he still be strong enough to be able to drag on two?

This is a beautiful race with a strong forest!

............

At eight o'clock in Kyoto time, the modeling topic will be downloaded from the major official websites.

There are a total of six modeling questions in Meisai, and one of them is selected to answer. Each question has a fixed focus.

Question A, continuous.

Question B, discrete type.

Question C, Big Data.

Question D, Operations Research/Network Science.

Question E, Environmental Science.

Question F, Policy.

If you choose one of the questions A, B, or C, you will participate in the MCM (Mathematical Contest In Modeling) competition by default.

If you choose questions D, E, and F, you will participate in the ICM (Interdisciplinary Contest In Modeling) competition by default.

If you insist on the difference between MCM and ICM, the general MCM competition topics are more specific, concise and clear.

ICM competitions, on the other hand, are more open-ended, "bigger", more macroscopic, and longer, and tend to be of common concern on a global scale, so they generally do not rely on specific cultural backgrounds or lifestyle habits. A considerable part of the MCM questions are based on the background of life in the United States, which is not familiar to participants from other countries, especially China.

Therefore, in most cases, Chinese participants will choose one of the questions D, E, and F to answer, that is, to participate in the ICM competition!

Of course, the most important thing is to look at the area that the team is good at, and this view cannot be taken as a definitive opinion.

"The title is downloaded. Cheng Nuo heard the voice in his ears and turned his attention to this side.

All three leaned down slightly, staring at the computer screen, carefully browsing each question.

Question A is about the driving of cars on the road.

Question B, about the placement of wheelchairs in airport waiting rooms.

Question C is a problem of the medical system of the United States under big data.

Sure enough, the three MCM questions all have a strong "American style", which can be said to be very unfriendly to Chinese players.

Especially for question C, you must know that the medical system of the United States and China are very different.

In this case, if the Chinese team chooses this question, it will take at least three or four hours to look up relevant information on the Internet to understand the relevant knowledge of the medical system in the United States.

In a modeling contest where time is so precious, this is indeed a bit of a luxury. Unless there are some teams that are very good at modeling big data, no one will be stupid to choose this topic.

Cheng Nuo can almost predict that among the six questions, this question may be the least chosen by the team.

After all, among the players from more than 30 countries participating in the competition, only the players from the United States know everything about this aspect and do not need to waste unnecessary time.

Cheng Nuo then looked down at the last three questions.

Question D, The Evolution and Impact of the Information Network of the Survey Association.

Question E, the construction of sustainable cities.

Question F, Modeling Refugee Migration Policy.

"Which one shall we choose?" asked Cheng Nuo's teammate from the Planning Academy.

The teammate from the Foreign Language College didn't speak, and looked at Cheng Nuo, the meaning was self-evident.

Although he is skeptical about Cheng Nuo's strength, after all, Cheng Nuo is nominally the captain of the team, and at this time, he still has to listen to his opinion.

Cheng Nuo pondered for a few seconds, then slowly spoke, "My personal opinion, choose A." Of course, if you don't want to, we can change it. ”

He's an indifferent attitude.

Anyway, he can come to all six questions, and there is no pressure to reach the level of winning the O Award (Grand Prize) that he promised before, the difference is only a matter of time.

For example, if you choose question C, no matter how great Cheng Nuo's ability is, it will take a while to consult the relevant information. This is somewhat inconsistent with Cheng Nuo's concept of saving time.

Therefore, his personal opinion is to choose the problem of driving on the road that is not unfamiliar to the trio.

The road rules in the United States and Huaguo are the same, driving on the right-hand side.

After thinking for a while, the two teammates nodded in unison, "Okay, just choose question A." ”

In less than five minutes, the topic of their group was decided.

Next...... It's officially started!

Cheng Nuo was in charge of modeling, the teammate from the Institute of Planning was in charge of programming, and the teammate from the Outer Institute was in charge of writing papers.

Each of the three has its own duties.

Cheng Nuo sat in front of the computer and carefully read the modeling problem from beginning to end:

[In some countries where cars are required to drive on the right, multi-lane highways often use the rule that requires drivers to drive in the rightmost lane when driving, except in the case of overtaking, they should move to the adjacent lane on the left, overtake, and then return to the original lane of travel (i.e., the rightmost lane), please build and analyze a mathematical model to analyze the performance of this rule in light and heavy traffic (i.e., when there are fewer vehicles and more traffic)?] You can study the balance between traffic flow and safety, the role of maximum or minimum speed limits (i.e., too low or too high speed limits) ......]

Unlike the other five questions, which are tall and high, and are new types of urban construction and refugees and immigrants, this is a very confident topic, and Cheng Nuo estimates that there are not a few groups that choose A questions.

However, the O Award is not evenly distributed to each topic, but the winner of the award. Therefore, it is possible that all 20 O Awards will appear in one topic.

This is also the reason why the two teammates were able to agree to choose question A.

After carefully reading the topic, Cheng Nuo was not in a hurry and started modeling work for a while.

I can't eat hot tofu in a hurry.

Before modeling, you must do enough preparation.

He needs to find some papers and books to learn some knowledge about road traffic.

It doesn't take long, about half an hour to get it done.