The end of this year ~ Two Copper ends badly

Let's talk about Changchun ~

One of the two questions in the warm-up match was done on my POJ, but we didn't have any questions in the warm-up match. On the evening of the warm-up match, ACDream got together. DS God [suitable girl] used a convex bag to overlay the convex bag. However, that method was wrong. At the time of the event, I had come up with a counterexample, wow. When the crowd gathered, DS God [still suitable for girls] a variety of black people, big character loss, also drag us down character QAQ

The board in the Changchun division is a bit distorted ~ K questions ~ This question can only be divided into two parts, but the upper limit must be well controlled. Otherwise, it will be too long. We got this question 1 y at 56 minutes, and it's better. Then, egg and Cheng Yao found that H had done similar things in the Zhejiang University and month division, so I went to answer the question and I was reading the question. There was a problem in the middle of the H question, but it was quickly solved. The AC took 130 minutes. I found that the C question is a water question and the result is good. mod Has some errors, that is, (1024n) % 1024 = 1024 and 0% 1024 = 0. I WA twice here, AC at 163 minutes. Next, I think that question B can be enumerated by bit. I will write question B, and I will write various errors in bitwise operations ~ Start
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And & into mutual inverse operation, tragedy 1 W, after the change again WA, found 0 to n-1 write 1 to n, then change to WA, the eggs rewrite also WA, anyway, all kinds of WA. I finally found that my bit operation was wrong. The tragedy is that I have no time to change it. In the end, I took copper for three questions. In the evening, I waited for the train to go to the Internet cafe to repeat question B 1Y. In this case, another J question is not read. In fact, J question is only a LCA, and then it is rewritten as 1Y. There are also questions E, and no questions have been found at the site. If there was no problem B at the time, both questions should be available. I was a little sleepy two hours after the event in Changchun. At that time, I had to change my mind to answer question B. The result was always the last one I wrote, and then it was a tragedy.

By the way, we sat at two tables together, and we took copper together ~

And then Hangzhou ~

Hangzhou booked a hotel because it was too late to have a three-person room, and the two teams stayed in three double rooms. Volunteers have always told us to pay attention to cold resistance. Why should we defend against the cold for over 10 degrees ~ On Friday, I was wearing half-sleeved clothes ~

Previously I said that I would like to play cos in Hangzhou ~ So I brought UUZ clothes. Change clothes at the event during the warm-up match ~ I wanted to change the results earlier than 20 minutes before entering the site. This caused everyone to take a picture. After the warm-up match, some people will take a group photo and enjoy it. By the way, someone took a photo of my side ~ I found my nest is thin XD. But there is no makeup on the front. It's too much ~

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In the warm-up match, there was only one question. The question of the farthest distance from Manhattan did not expect to expand the absolute value> <.

Next to the formal match the next day, we are going to be again and again ~ Great pressure. We were still reading the question 20 minutes ago and found that some people had passed the K question. After reading the question, the egg found the bare minimal spanning tree with a speed of 1Y. Then I found that the question H was BFS, 53 minutes and 1 y. Then I will change my eggs and write my questions. I don't know what I is, 62 minutes and 1 y. Then I wrote something similar to SPFA in question J, 3WA, for me ~ Because I am familiar with BFS and SPFA, and the speed of writing is violent and WA, why is it unknown ~ Then we used our two programs to beat the video and found no error. After reading the question again, Cheng Yao found that one condition was missing, and the speed was changed to 145 minutes after AC. Then I opened two questions in BC at the same time. I wrote two questions in question B: C. I found that question B can be used to calculate the cut point and choose whether to use three points or directly based on the intersection of the tangent and the rectangle. After writing the code, the sample is incorrect. Print the code and change the eggs to write C. In the middle, I found that I wrote the cut part wrong. At the same time, they also had problems with question C. I switched back to question B, but it was still wrong. Then I switched back to question C and wrote C. I later found a BUG in question B. I changed it to three points directly, but it is still not correct. I want to change the egg to C. Their C question is written and submitted to TLE. There is not much time, and I have not made the C question in the end. As a result, question 4 has another copper. After the competition, when I went to the post office to send postcards, I suddenly remembered that I had written a mistake in the lower bound of the three points. If we did not switch between the two questions at the time, but write a question until the end, we may still be able to, but from the perspective of the board at that time, even if we had five questions, there would be no silver.

We only got on the train yesterday afternoon in Hangzhou. We planned to go to play in the morning. As a result, we had to leave the house too late at noon in the morning. It took a lot of time to go to the supermarket for dinner, half of us went to the Internet cafe, and the other half went to the west lake. It wasn't long before we went to the West Lake.

Wait until next year. By the way, someone may be in a dark group with me in a certain division next year. [ghost son X demon Dream] cos. Welcome to watch.