ZJOI2018 Round2
2018.4.23
After a lapse of a month, I set off from Changjun to Zhejiang again.
The place to go this time is Yuyao, and it takes five hours to take the high-speed train.
With the same equipment as last time, go!
What are you doing in the car for five hours?
The approximate process is: Hearthstone => read the question => play => eat => write the question => sleep => hearthstone.
Before I knew it, I arrived in Yuyao.
Yuyao feels a littlebreakwhat. The houses are short. There was a heavy breath in the air.
Arriving at the hotel.... The room is not bad, I received the things, and went to report after a while (report at night)?
Then I didn't expect dinner to be solved in the cafeteria! The food is cold.
Several people discussed it and decided to buy instant noodles on the way back. Laotan Sauerkraut Beef Noodles...
After I went back, I watched the "NOI2015 Wine Tasting Conference" for a while, and then I was stunned. Of course, the noodles were made on time at 9:00 pm.
Then I went to bed, hoping that I could understand a little more tomorrow.
2018.4.24
\(morning\)
The set alarm clock didn't ring, and it was already 7:00 when I woke up.
Get dressed and run to breakfast. The breakfast tastes good, praise!
Walked to Yuyao Middle School.
Lecture 1 in the morning: Strongly Connected Steiner Subgraphs
Well, let me briefly describe this issue:
There is a directed graph with \(p\) keypoints.
Try to select a subgraph with the least number of points, so that the key points are connected to each other.
I try to keep up...
first \(p = 2\ ) with the help of \(ZSY\) .
Then \(p \ge 2\) , I can only say that I worked hard... Find the group number of the group \(yyb\) to teach.
After arriving, I found that 500 people were filled up and gave up. Forget it, do your own thing.
Lecture content 2: Selected lectures on simple topics.
It's really not easy at all... I can barely keep up with the first three questions.
Then dropped the line and chose to write "NOI2015 Wine Tasting Conference". Called all morning did not call out.
Went to eat without doing anything.
\(afternoon\)
I didn't go back to the hotel at noon (it seems that I was the only Changjun student who didn't go back to the hotel...)
and continued to change the question, and found that the initial value of \(inf\) was too small, and I was depressed.
I put on my headphones and took a look at \(AHOI difference\) . Isn't this a weakened version of "tasting meeting"? Seconds are seconds.
Lectures in the afternoon...
The lecturer turned out to be a young lady? Topic: XXX Selected Lectures.
Her topics are $Round$1, 2, 3, 4, 5.
\(Round\ 1\) The title is quite watery, I can think of it. Then hung up.
Together with \(ZSY\) and \(YYB\) , I wrote the one I just talked about \(Meet\ the\ Middle\) .
Suddenly found that there are 518 people in the lecture group? Expanded! Quickly add in at the speed of light.
Before I knew it, it was over in an afternoon.
\(evening\)
I didn't even plan to try it out. But when everyone goes, I'll go too.
Followed \(GPS\) to the test site, and left without doing anything as expected.
After going back, I was slumped for 10 minutes.
Then start with \(fdf\) to discuss a question today.
The whole \(Luogu\) is only 4 people AC, and there is no problem solution on the Internet, I am also very helpless.
I feel like I have been stuck for about an hour and a half. I was surprised to find that I was actually \(AC\) , happy.
Start the bar "Knight of the Frozen Throne". (Hearthstone, decadence....)
Then use Xinhuomu to kill Sindragosa, and use the follower thief to kill the Lich King, so far, the level is completely cleared.
Then I don't want to be slumped... eat something. Write some solutions to supplement the blog.
Go to sleep and hope to be better tomorrow.