The next day, nine a.m.

In the science and technology hall on the second floor of the School of Information Technology of Polytechnic University, eight contestants sat in front of the computer, everything was ready, and the semi-finals began.

The style of the science and technology hall is very similar to the e-sports competitions that Chen Tao usually watches, with eight players facing the audience in a soundproof cubicle.

A huge projection screen display in the middle of the hall is divided into two parts, one part is the computer interface of a contestant who is randomly played, you can clearly see the question answered by the contestant and his screen interface, through his * work, you can see his solution ideas, no matter how the planner is behind the scenes, but from the picture of this competition, it is indeed open, just and fair.

Different from the application of algorithms, the "algorithms" examined in the information technology competition are more inclined to mathematical modeling, which is to use the language of computers to describe mathematical models and use them to solve problems, which is why Liu Xuer wants to worship Cao Anmin's disciples. The information technology competition examines the program, and the soul of the program is the algorithm, and the algorithm is actually computer-style mathematical thinking.

For example, at this time, the big screen switched to the screen interface of Liu Xu'er, and her question was,

"Chen, who lives in City A, wants to travel to the city with his friends. She knows that each city has 44 airports, located on a rectangle of 44 vertices, there is a straight high-speed railway between two airports in the same city, the price per mileage of the high-speed railway in the Nth city is T, there are routes between airports in any two different cities, and the price per mile of all routes is yy. So how should Chen arrange the route to city D in order to save as much money as possible? Please find a tourist route from city A to D, and the airports in the city can be selected arbitrarily to ask for the least total cost.

The required input format is:

The first row is a positive integer nn, indicating that there is a nn set of test data. The first row of each group has 44 positive integers s,t,A,Ds,t,A,A, which represent the number of cities, YY represents the price per unit mile of the aircraft, and AA and DD are the serial numbers of cities A and D, respectively.

”

Chen Tao was confused, his eyebrows were about to be twisted together, and he didn't know what it meant.

I listened to the two girls around me muttering quietly.

"The first question is okay, it's a difficult question for the provincial exam. I remember that the year before last there was a similar question in the exam in Sioux Province. ”

"Well, it's not an official competition, and the difficulty won't be that high!"

Looking at other people is also a picture, this question is okay, not too difficult expression, Chen Tao grinned when he saw it, buddy, this IQ is not even a big part of participation.

The duration of the information technology competition is two and a half hours, a total of four questions, each question is completed, the contestant will submit the program source code and compilation file through the intranet packaging, after the expert review team over there confirms that it is correct, a green light will be lit behind the contestant's name on the other side of the big screen.

With all four green lights on, the top four will be selected to advance to tomorrow's finals.

Chen Tao glanced at it twice, only felt extremely bored, took out his mobile phone and called a few kings, all lost, he was so angry that he stopped playing, went out to breathe, and by the way, he got a tuba.

The bathroom on the second floor was full, and he went to the third floor.

"Lao Tzu came to 211 and left a bubble of, no, I didn't come back in vain!" Chen Tao pulled while fighting with himself in his heart, and his fingers drew circles on the door panel of the bathroom, this buddy's hands were not idle.

At this moment, I suddenly heard the sound of the door being pushed.

A big grinning voice said, "If Mr. Feng grinds for a few more minutes, Lao Tzu's bladder will burst!

"That means that Mr. Feng is serious about you, Brother Shen!" a young voice laughed.

"He's letting Lao Tzu cheat! Using Lao Tzu as a gunman, something happens to let Lao Tzu resist. ”

"Shhhhhh

"It's okay!" Although Brother Shen's tone was hard, his voice was still quiet, "Who doesn't know about the public affairs of the industry? Hey, let's deceive those college students." They're competing, and you can still hear us here?"

The young man snorted twice and changed the subject, "The level of the student named Liu Xu'er is really good, with clear thinking and concise procedures. No wonder Director Xu arranged for her to enter the finals. If there was no Director Xu, most of the champions would be hers. ”

"Hehe, this champion doesn't look at the level, it looks at the people! You don't have anyone? No matter how high the level is, it's useless! It's just that the competition in Qingbei is born, and if you enter the finals, you will also be cannon fodder. Hehe, one, two, or three have already been decided, and students from other schools have come to accompany them. Brother Shen's tone revealed a sense of disdain, a sense of pride, and a sense of superiority that other people's fates had been arranged by him.

"Nothing will go wrong, right? I heard that the media will be invited to the finals tomorrow, and the leader of the Municipal Education Bureau will also come, in case it ......."

"In case of a fart! Lao Tzu entered the question bank in advance, and secretly handed over the question to the three students, and the question was biased and difficult, unless the big hand of the competition came, it would be in vain if our level went up. This trick was all made by their Principal Sun, that is, the one who had a heart attack two days ago. Hey, I heard Mr. Feng say that the internal champion is Principal Sun's grandson, hey, this grandson has to not want his own face in order to add color to his grandson's face!"

The young man said enviously, "Who can let the family have someone, who can level the directors of the association, our company, and the school, just to open a competition project for his grandson, ordinary people don't have this means." ”

"What kind of people and what kind of life, there are talented people in this society! No one can only be a foil. ”

The young man sighed, stopped talking, and after a series of hand-washing sounds, the footsteps of the two gradually faded away.

In the bathroom, Chen Tao's eyebrows were raised.

grandma!

These cubs have dark hearts, right?

Lao Tzu took the train for more than ten hours, Baba came to compete, Nima has not finished the semi-finals, you tell me that the champion is set?

Is there such a thing as a playful person?

What about playing people like monkeys?

I don't know how many nights and how much sweat Liu Yu'er has spent for this game, but these grandsons can easily wipe out all her efforts with a single sentence!

There is always such a person in society, relying on his advantage of having resources and formulating rules, to play ordinary people in the palm of his hand!

How about you study hard?

What about your good grades?

Some of us are better than you!

Even the examiner is my person, what are you fighting with us?

Although he has seen many dark sides in other people's lives, when he personally feels this undercurrent, Chen Tao's heart is still like a boulder stuffed, and he can't say how to hold his breath!

Angry is angry, Chen Tao didn't move, don't look at this guy has a book of life and death, in the final analysis, he is an ordinary person with no power and no power, not to mention that he didn't record just now, even if the recording is stabbed on the Internet, it can't set off much storm, and it can't change the ending of Liu Xu'er.

"It's all to blame on the grandson surnamed Sun!

Ay?

Wait a minute.

Suddenly, a flash of inspiration flashed in his mind, and the words surnamed Shen just now echoed in his mind, "The vice principal surnamed Sun died three days ago!"