2019 ICPC Nanchang summary + summary this year

Nanchang Bronze:

This failed experience, in retrospect, I feel very helpless. Before I went to Nanchang, I felt that I had removed a lot of baggage, and the amount of training in the two weeks before I went there was very little. All of these are foreshadowing the results. But dig deeper and think about it, in fact, it's still too much.
day0: I
pulled a set of 16 CCPCfinal with ZX, but I only checked in. The two simulations did not want to write (laziness), the greedy question wanted to think about the dichotomous + balance tree, and the state pressure question wanted to search. Autism ends.
day1: The
warm-up match BCD itself is out, but thinking question D is not a correct solution. After knowing how to write, we feel uncomfortable again and start to doubt ourselves.
day2:
ZX and I quickly wrote C and E in parallel at the beginning of the game. At this time, I was ranked 17 and then I was stuck in the L reading question. I did not consider n=1wa twice, and A dropped in an hour. Ranked 40+ at this time. The start seemed smooth, but in fact it was already at its peak. Later, ZX started to use cost flow B (if the complexity is not right, I will go wrong, I was the one who overcame your freedom ). I didn't think about it carefully, I went to get the DP 怼J, and the result was that both sides collapsed. At this time, the number of questions on the field is G, and neither DCN nor I can find that the number is not a prime number (sigh). I saw question A in the last hour. It was a persistent and searchable item with deletion. At this time, ZX was still optimizing the network flow. I couldn't guarantee that I could write A, so I didn't touch it. The final result is 3 questions with bronze tails.
Analysis after the game:
Most people have passed the problem, we have no idea, we must carefully consider the problem conditions to see if any information is missing. If the solution you want does not use certain conditions of the problem, you should discuss it carefully with your teammates and analyze the complexity. Think about it before typing. If there is no A to drop the question, then all the time and code effort spent on the question is invalid.
The problem is because of the dish. Dishes are original sin.

Summary this year:

In the Nanchang Invitational, Nanjing and Nanchang Regional Games, there were four CCSP games, two bronzes and two silvers. The two games in Nanchang were copper, and both were lower than expected. The result in Nanjing was higher than expected. CCSP didn’t know how to evaluate it...
I thought about it, so let’s stop here. What can we do later? It takes up a lot of time. But there will be almost no additional benefits. But when a decision is really made, it is as reluctant, unwilling, and disbelief to break up with a lover who is still in love for practical reasons. A few pages are red, one green, hot palms and quick heartbeats while waiting after submission, the joy of independent AC problems, I still remember these, I have felt these, I like them. But after playing for so long, (I think) I have done so much, and I am only a casual player... "--ah, let him play so much, just keep playing if you want!". With these hypocritical words, I made this decision.
If you don’t work hard enough, work harder. If you don’t have enough talent, work harder.

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Origin blog.csdn.net/qq_43202683/article/details/103006231