"The little girl is quite smart!"

"That's not it, I just wanted to ask Mo Cheng if he could go to eat hot pot together in the evening."

I looked at Alipay on my phone, the balance was insufficient, I touched my pocket, and there was not much money, I touched my head, and lost to Xu Chao with a smile: "Can I not go today?" ”

"What are you afraid of, are you still afraid of falling off the chain tomorrow at your level?"

"Actually, I have a function I want to solve, and I may have been a little shy lately." After saying this, my face turned red and I laughed.

"Hahaha, it's actually because I don't have much money." Xu Chao patted his legs and crossed his waist and smiled.

"Seems to be."

"Sister, please, what a big deal."

"Then I'd be respectful and obey, hahaha."

I simply sorted out the data in the computer, and when I turned off the data, Xu Chao glanced at it and said, "You have solved half of this function." ”

"Almost, there's still half of it I can't solve, it's too complicated."

"If you can solve this function, then this year's championship should be secure."

"I hope so."

After walking to the night market with Xu Chao, Xu Chao ordered a lot of meat to eat, she saw that I only ordered a few vegetables and asked, "Why are you only vegetarian?" ”

"Look at this meat, it's so dirty, do you know that feeling, the kind of fingernails that wipe the blackboard when the teacher is in class, I really can't eat it."

"If you don't eat it, you won't get sick."

It was already more than eight o'clock after the two of them finished eating, Lao Huang and Lao Li trained me as usual, and then asked me to rest early to prepare for tomorrow's computer-based test, I gave a military order in front of the two, if you don't go to the Great Wall, you are not a hero, and if you don't get good results, you won't come to see the two of you! I woke up very early the next day, and it was up to me to get good grades.

Coming to the door of the gymnasium, everyone took out their ID cards one after another and entered the examination room, I walked to my position in an orderly manner, and after a while, the examiner walked in and announced a random message:

"In recent years, with the improvement of our information technology level, the difficulty of the competition is also increasing year by year, this year in order to prepare for the impact of the International Informatics Olympiad, we decided to increase the difficulty of the competition, and at the same time in order to increase the competitiveness, all the operation partitions are divided into an operation channel, and finally we have added some function rules, before some domestic function methods have become overstretched year by year, so students, whether you can impact the International Informatics Olympiad, this year's results are particularly important!"

As soon as the examiner finished speaking, everyone called out, and the gymnasium exploded all of a sudden, I turned my head and glanced at Xu Chao, Xu Chao smiled at me, and then looked at Yu Wenbo on the other side, but I didn't expect him to keep looking at me.

Soon everyone accepted this cruel fact, the gymnasium quickly quieted down, five minutes before the test questions were sent to everyone's computer on time, this year's topic is: through the control of land desertification to observe the proportion of precipitation in the Alxa region, this topic has too many variables, and the things that need to be calculated are also very complicated.

Soon I simply listed a function to calculate, and after calculating it, I found that the data became more and more complicated, I touched my pocket, and there were some melon seeds in it, I knocked a few melon seeds, and then drank a sip of water. Soon a teacher came to me and asked me not to disturb others by eating melon seeds, and asked me to give him all the melon seeds, I touched my head, told him not to eat them, and then gave him the few melon seeds. Try it with Lestovsky's function, but I didn't expect Lestovsky's function to be usable, and after using this function, the computational efficiency of the data suddenly became considerable.

The method of data optimization has been solved, so let's change the way of thinking, this problem should be divided into two, first calculate the land desertification, and then calculate the proportion of precipitation.

The Alxa region should be Inner Mongolia, temperate continental climate or temperate monsoon climate, geography is not well learned, just get one, just the temperate monsoon, soon I put part of the data of land desertification on the calculation partition, so many players only gave a calculation channel, it is clearly a pit people, and then the operation partition will collapse again!

I went to the calculation channel, I didn't expect someone to calculate the data so soon, I looked at a few personal data, there is no speed limit, once the amount of computing goes up, the data tends to be saturated, and the crash will follow, I started the second part of the idea after limiting the speed of my data.

The data in the previous part is not calculated well, and my precipitation ratio is not easy to come out, so I can only use graph theory, and the function of time complexity is also used, I built a model, plus a series of constraints, and then I put this data into the operation partition. We're halfway through the five hours. I had to work hard to perfect the model, and it would take a lot of time to integrate the data from the two parts!