From black technology to super engineering

If we say that the main function of the first and second floors of the library is to borrow and read books.

Then the third floor, the main function is self-study.

For a long time, this has been the place where seniors and sisters prepare for the postgraduate entrance examination.

In addition to the tables and chairs used for studying, there are also several lazy sofas around, so that you can take a nap after fighting all night.

But... the objective law of the development of things is to deviate from the original intention.

Although the third floor is a sanctuary for seniors and seniors to prepare for exams, it is also a place where couples fall in love.

Those beanbags are big enough for couples to snuggle up after a stressful day of study.

It's just that it's only 8 o'clock at this time, and the seniors and sisters are still restrained, and everyone keeps quiet. Even when discussing problems, they are quite restrained.

...

A pair of boys and girls are sitting at a desk not far from the door. There is a notebook in front of the boy, and a copy of "Landscape Design Elements" in front of the girl.

It's just that the girl's mind is obviously not on the book. She sometimes looks back at some couples who are quietly "spreading dog food", and sometimes secretly glances at the boy beside her.

The boy's expression is serious and serious.

In the eyes of girls, this is what a boy with a high IQ should look like.

——My boyfriend is an oier who participated in the Information Olympiad in high school (Young Informatics Olympiad is referred to as OI, and the participants are generally called oier.), because of various reasons, he came to the Provincial Jiaotong University, and continued to participate in ACM when he was a freshman... ...But the teammates are not strong enough to stop in the regional competition.

In the words of my boyfriend, I really can't move.

Fortunately, gold always shines.

Although her boyfriend failed to fulfill his long-cherished wish at ACM, he was recognized by Mr. Chen's research group.

As a sophomore, he was able to do a job like a fish in water in a research group full of masters and doctorates.

What is strength?

This is strength.

What is a genius?

This is genius.

Today, she accompanied her boyfriend here, on the one hand, because his boyfriend is busy with scientific research, and they don't have much time to meet each other. On the other hand, she also has a little extra care...

It is said that there is a software engineering school girl.

Although she is very confident in herself, a creature like a school girl... right.

"Ruhai, it's almost a quarter past eight. Why haven't you come yet?"

The girl touched Shen Ruhai and asked with a smile.

Without blinking, Shen Ruhai moved the phone to her side: "Ask."

The girl laughed and picked up the phone, quickly unlocked it with the password, then opened WeChat and clicked into the group group.

She frowned slightly, then her expression became serious, and she typed to ask.

"Where are you two? Can you have a sense of time?"

It didn't take five seconds for the message to be sent.

The school girl named Qi Yumo replied with a message.

"I'm sorry, senior, I'm already climbing the stairs." At the end, he returned a smiley face.

The girl turned her head and glanced at Shen Ruhai, and after thinking about it, she felt that it was right not to reply.

So she turned off her phone and looked at the door seriously.

A minute later, a pair of young boys and girls appeared at the same time.

The man has a calm expression on his face, while the woman has a slight smile. Compared with her face, it is noticeable that there seems to be a gel pen stuck in her head.

Put a pen in your head?

The girl hummed slightly in her heart, and then she touched her boyfriend.

Then she noticed that when her boyfriend saw the pen hairpin girl, his eyes lit up without leaving a trace.

...

"Hello, senior." Qi Yumo greeted the senior first, and then looked at the girl next to the senior with some doubts.

"Well, here we come." Shen Ruhai nodded to Qi, Mo and Ye Ming: "Let's not talk nonsense, here are six questions, which are the real questions of the ACM preliminaries in the school last year. Although relatively simple, within the specified time, there are only six questions. Less than 30% of the people are completely correct. And even if they are all correct, it does not mean anything, because the ACM game principle is to be fast and accurate."

Speaking of which, Shen Ruhai pushed two printed A4 papers over.

"Who is this?"

"Oh, the senior from your design institute, she doesn't participate, she just came to take a look." Shen Ruhai nodded with a smile, and then looked at Ye Ming: "Ye Ming, right? I heard that you are not from the computer department?"

"Well, I'm an electronic information engineer."

"As for ACM, we generally use C/C++, is it okay for you?"

Ye Ming nodded calmly: "It's okay, Python is also okay."

"Python is generally not used. For so many years, I have basically used Python for large numbers, or JAVA."

Speaking of which, Shen Ruhai glanced at the time: "Okay, let's start."

Ye Ming and Qi and Mo looked at each other: "Where is the senior?"

Shen Ruhai smiled reservedly, and before he could say anything, the girl beside him laughed: "Your senior was the number one player in the preliminaries in the school last year, or was he an oier—did Boss Chen not tell you?"

Qi Yumo smiled slightly: "Then please give me your advice, senior."

Ye Ming also nodded with a smile, then opened the notebook.

At the same time, he looked at the A4 paper, and then he was taken aback.

At first glance, except for a binary tree...it seems to be basic knowledge. Is the school so simple to give students confidence?

...

"ACM Program Contest Selection Preliminary Round"

Time: 150 minutes Amount of questions: 6 questions

Note: There is no limit to the algorithm for solving the problem. As long as it can be input in a standard format and the correct result can be obtained through the program, this question will get full marks. If the topic cannot be run completely, explain the idea clearly.

A: Alphabetical sort. Difficulty factor 1 star

Question meaning: There are 10 English letters (including upper and lower case), use a computer to achieve the following functions. Sort the 10 letters in the order of English letters A, B, C, Z, a, b, c,, z and output. Note: Lowercase letters should come after uppercase letters.

Input: Randomly input 10 English letters. JIEBACDFHG/jiebacdfhg/JiEbacdFHG

Output: The sorted sequence of these 10 letters. JiEbacdFHG/abcdefghij/EFGHJabcdi

Looking at the title, Ye Ming shook his head secretly.

It's so simple, are you fooling elementary school students? # include

void main()

...

cout\u003c

}

After successfully writing down the answer code, Ye Ming continued to look at the next question.

B: Arrangement of numbers, with a difficulty factor of 2 stars.

n people form a circle, and number them clockwise from 1 to n...

Ye Ming just thought about it for a while, then wrote down the code again - no more than thirty lines of code.

...

As Ye Ming read it all the way, his hands never stopped, as if... he was typing while looking at the text.

Or chatting with people.

Soon, he completed problem D and came to problem E to solve the equation.

Meaning of the title: An equation of the form ax 2 +bx+c=d. Where a, c, d are all integers, and b is a positive integer. Please use a computer to find the corresponding value of x (only real roots are considered).

Ye Ming stopped at this moment.

It's not that he doesn't know how to write codes to solve equations, but that he just reviewed his junior high school knowledge while teaching Ita at noon today.

This one-dimensional quadratic equation is particularly familiar.

Shall Ita try it?

"Ita."

"exist."

"Want to learn programming?"

"What is programming?"

"Using a specific computer language to instruct a computer to perform specified tasks."

"For example, do you teach me the language of mathematics?"

Hearing Ita's answer, Ye Ming was taken aback.

He's an idiot.

Ita itself is an AI, and I let the AI ​​learn programming... What about this doll?

As expected, he randomly assigned a few values ​​to the abcd of question E, and asked what the value of X was, and Ita answered immediately.

So he patted his forehead and shook his head with a self-deprecating smile.

His action also attracted the attention of Qi and Mo beside him.

She had just finished the third question, and it took fifteen minutes so far.

Then she saw that Ye Ming started the code for the fifth question.

She was startled.

So fast?

//Open a door: [Recommendation ticket]