(——When we were young, most of us liked to do perfunctory questions.) ）

Su Nan is doing a math problem.

She seems to be doing her homework whenever she has free time, and the test paper in Su Nan's hand has been noticed by Song Tingchuan since the morning.

He remembered that before dinner in the afternoon, she seemed to have just finished making choices and filling in the blanks.

It was recess before, and he didn't have the leisure and elegance to pay attention to how Su Nan did the questions, so at that time, in the face of Su Nan's speed of doing questions, Song Tingchuan was despised.

Because of the choice to add fill-in-the-blanks, fifteen minutes was enough for him.

In other words, in less than two recesses, he can catch up with Su Nan's progress.

However, Su Nan spent the whole morning and afternoon recess.

With such efficiency, Song Tingchuan despised it for an afternoon, and even couldn't figure out how he could lose to such a person?

However, at this moment, after seeing the specific content of Su Nan's writing and painting on the paper, Song Tingchuan only felt that his face was as if he had been slapped by someone, and it hurt hotly.

So what did Song Tingchuan see?

It turned out that Su Nan was working on the first question of the big question at the moment.

According to everyone's experience, the first question of the big question has always been a sub-question, and it doesn't take too long to think about it at all.

However, just a few minutes after Su Nan returned to the classroom, ten solutions to the first big question had already been written on her scratch paper!

And at the moment when Song Tingchuan shook his head, Su Nan wrote the eleventh solution.

Song Tingchuan: "......"

What is this good girl doing?

In the next second, Song Tingchuan had the answer.

Su Nan, who had completed the eleven solutions, after scanning his scratch paper, circled the simplest of the methods, and then copied them back onto the test paper.

Song Tingchuan: "......"

You ask how Song Tingchuan can determine at a glance that Su Nanquan is the optimal solution from the eleven solutions on a piece of scratch paper?

That's thanks to Su Nan.

Others may really use scratch paper as scratch paper, which is densely packed and messy, and they may not be able to understand their own drafts after completing the question.

But Su Nan is different, he treats the draft paper more seriously than the homework, the handwriting is clear and clear, and the font is neat and neat, before each solution is written, the xth solution of the xx test paper xx question will be marked in front, and then the official pen will begin.

And Song Tingchuan looked at it at a glance and could find that what Su Nan circled was the one with the least number of steps in all the solutions.

Isn't the answer obvious?

Thinking of what he thought of Su Nan's "turtle speed" before, Song Tingchuan twitched the corners of his mouth.

Probably, maybe...... This good girl does this for every question?

And...... Nima, he gave eleven solutions in a few minutes, and he may not have this speed in exchange for him!

Song Tingchuan's expression, which was leisurely a moment ago, collapsed at this moment.

Damn, this good girl is a pervert, right?!

The question is, what's the point? What else can you do but slow down efficiency? The exam doesn't want you to have eleven solutions!

In order to confirm the guess in his heart, Song Tingchuan snatched her draft book and flipped it up while Su Nan was filling in the test paper-

The first multiple-choice question, solution 12345, the second question, solution 123......

Fill-in-the-blank question 1, solution 1234, solution 1234, solution 12345678......

Song Tingchuan: "!! ”

His head stiffened like a machine that had lost its lubricating oil, and he turned his head to look at Su Nan a little bit.

Is this Nima still human?

However, unexpectedly, Su Nan did not change anything because her draft book was robbed, she still worked her test paper, and she finished writing it in a few seconds, and then reviewed the next question without changing her face, and then she didn't give Song Tingchuan a look, silently took out another brand-new draft book from the drawer, and began to brush again-

Solution 1 of the second question of the short-answer question of the xx test paper......

Song Tingchuan: "......"