APIO 2026 YouJi

APIO 2026 YouJi

So tasty /cy

Day 0

LH said that he would give us a test. I thought that I could not meet with LH, so I decided to escape. /cy

I slept well at night.

Day 1

In the morning, I went to Beijing which have a senior school named 北京大学附属中学\text{北京大学附属中学} . when I met with some people in hsy, we went to a nice restaurant looked very tasty to eat lunch. I ate an absolutely tasty 烧肉饭 , making me happy and have full of tastiness.

In the afternoon, we achieved our hotel – YouYi Hotel.

(First Time I Lived In A FiveStar Hotel).png

Our room had two people: lpr who is a big god, and me.

I was so tired in the afternoon that I slept about 1h on my bed where I felt so soft. Then I found that I(we) had some paper which could be used and we could got a free meal.Today I ate 番茄牛肉面\text{番茄牛肉面} which was full of a big bowl and equal 18 times a bowl of rice of ??? likely. It was pretty tasty. /cy

After I went back, I found that xrxt was doing an exam! My heart was so excitedMy heart was so sad: they could do an exam happyly, but I could only play sadly. /bx

In the evening, lpr who is a big god played with his friend in W.I could only played something in my room.

Day 2

There was an amazing thing required: we must get up before 7:20 to eat breakfast.And To my surprise, I got up on time! I thought I could not do it but I did! It was so strange!

First time I eat breakfast in a FiveStar Hotel!It was so great, especially the noodles and fruit was so nice! /cy

In the morning we went to the school to attend two lectures by ZhaoShenghao and XQW. One of lectures was 《一类生成树的应用》 , and the other one was 《格路计数的代数方法》 .

My reviews:

ZhaoShenghao:

His lecture was so nice, but I really wanted to sleep.

XQW:

(Chinese Captain).png

His lecture was nice too, but I could not understand it.

Random Walking Multivariate Function was so difficult(Tai Chi Cao Zuo Le). I thought this method was badder than 反射容斥 .

At noon, I was eating lunch, which was 番茄牛肉面\text{番茄牛肉面} which was tasty and full of a big bowl, and equaled 18 times a bowl of rice of ???.So nice! /cy

In the afternonn I walked random in hallway. Then I attended two lecture: 《莫队近最优转移方法与范围修改问题》 by LJW and 《一类贪心博弈论的解法》 by HYX.

My reviews:

LJW:

I counld not understand.

HYX:

So wonderful! I only could understand this!

Then I have dinner. I ate 番茄牛肉面\text{番茄牛肉面} which was full of the big bowl and I thought was about 18 times a bowl of rice of ???. So testy /cy

Later, we went to a gym where we tested our computers. The problem set was belong to NOIP 2025. I try to write a code which was brute-forced. But I only got 55 ! (A person who is named Sam had said that a brute-forced code could get 2020 ). And I also found a application named SelfEval . When I went to our hotel, I looked into about it. It can make OI to IOI. Now NOI has some big examples and SelfEval , APIO and WC also has it. I do not worry about mistaking.

Subsequently, there was a APIO 2026 Begining Ceremony .

Some leaders did some boring speeches. But actings were so nice that I thought the focus of Begining Ceremony or Ending Ceremony were actings and the speech of dzd.

In the ceremony, there was a saying which made all of us excited:

Then next person who comes from Chinese Computer Ferderation is –

???

Vice President of CCF and Professor, Du Xiaoyong !

there is a saying " 蠢蠢欲动的掌声熄灭了 ".

But the most exciting thing is a saying by vice president of CCF:

Maybe you will ask me that why Du Zide who is president of CCF do not come. he is star-chasing now.

I did not review anything.

In the evening lpr who is a big god played with his friends. I could only do some problem by the test of Sam. The result is that: T1 and T2 was too easy and I have no time to do T3.

Day 3

Breakfast were so tasty. /cy

Then I had to take part in the APIO Chinese test from 9:00 to 14:00.

I took 7 /bangbangt before the test begining.

Some details of this test:

/fn/fn/fn/fn/fn/fn/fn/fn/fn/fn/fn

Because when I looked T2, I mistook S1∩S2=∅S_1\cap S_2=\varnothing into S1∩S2=∅∧S1∪S2=US_1\cap S_2=\varnothing \land S_1\cup S_2=U , the result was:

100→8Ag→Fe100\to 8\\ \text{Ag}\to\text{Fe}

/fn/fn/fn/fn/fn/fn/fn/fn/fn/fn/fn/fn

/fn/fn/fn/fn/fn/fn/fn/fn/fn/fn/fn/fn

I took 11 /bangbangt after the test ending.

Then I had lunch fast. I ate fantastic 番茄牛肉面\text{番茄牛肉面} , 二维偏序 xwc that LH recommended, and it was about 18 times a bowl of rice of ???.So tasty! /cy

I went to the gym where lots of people were celebrating and took part in APIO 嘉年华\text{APIO 嘉年华} . I was not good, so I only took part in three project: 运乒乓球（极限通过）、打“类高尔夫”、投壶 . At last I got a small PI(Class PI)(I don not know that why my bag had some APIO 2026 KayBoard Hat when I came back). I played so fun!

Later, some people ask us to look our test scores. /kel

And they ask us to attend a lecture to learn these problems. lpr who is a big god beside me was playing hullqin with his friends in W.

(Even this time I did not realize that I read T2 wrong, until July when I restarted to write cake.)

In the evening lpr who is a big god also played this people in W. I rested and then I slept.

Day 4

In the morning we attended three lectures: 《？？？》《金融分析》《 About Segment Tree Beats 》 .

In the Afternoon firstly we went to a place where some people did some introduction about Beijing, making me bored and thirsty. Subsequently we went to 北京大学\text{北京大学} (Peking University)!

We went to so many famous places:

  • The house of famous person who is named Feng Youlan(Zong Pu’s father).
  • A famous lake called “No Name Lake”.
  • A high tower, and we were at “the best place to take photos”.
  • A “Rock Ship”.
  • Some houses of some famous people which I forgot.
  • Some famous places which I forgot.

So Nice!

After I went to school and had dinner, we attended APIO 2026 Ending Ceremony .

There were some boring speeches, too.

But actings were so nice, too.

And the most famous was the speech of dzd.

Then next person who comes from Chinese Computer Ferderation is –

Where there is dzd, there is a silent time ,

because the loudest cheering would be appeared and shouted happily.

president of CCF Du Zide!

Cheering was so loud.

I could feel more and more excited.

First Time I Look dzd .png

Especially, there was a interval of his speech:

Some students ask me what I did when APIO 2026 Begining Ceremony was begining. I went to Singepore to work out something.

I could not understand what “Star-Chasing” means.

At last the host wanted to make us say something. But all of us said:

I often recall the past.

The life at that time is in my brain.I cut,fold,snake that time behind it, and make them be some white cloud in the sky.

Where should I stay? I ask to myself.

At night aha came. We chatted something and then I went to bed.

Day 5

This was the last time when I enjoy the breakfast in this FiveStar hotel. So tasty. /cy

Then aha and I went to the train station, and I ate a great 鸡排饭 which is about 12 times a bowl of rice of ???. So tasty /cy

Then there was nothing.

HouJi

All in all, I was so happy and knew more things. Mistaking the problem was only regret, and Ag→Fe\text{Ag}\to\text{Fe} .

YeahYeahYeah! I experience a NOI match! /cy