Norp's blog

Pupil in 80 days — Day 12
By Norp, history, 9 months ago, In English

Hello codeforces!

Today I tried to solve problems above my level, but it turned out that it was more difficult than I expected. I tried to solve one problem 1200 for about 40 minutes, but even with the help of the tutorial I could not solve it. As a result, today I solved about 5-6 problems in the range from 1000 to 1300, which is already quite good. Also today I wrote one virtual Div.2, and there I was finally able to solve AB, where A was 900 and B was 1100. Although this is very easy for some, it was difficult for me, especially when I was thinking about the solution for B.

Plans for tomorrow:

Continue to solve problems from the archive, understand the material about prefixes and suffixes, solve more problems on the topic of greedy and brute force (as you know, these topics are the worst for me)

Till tomorrow!

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9 months ago, # |
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I find this working quite well: when totally stuck on some problem, read editorial and put it aside for a week. Then come back later and implement from memory/understanding.

For prefixes there is awesome problem 295A - Greg and Array, but don't read editorial because it's not very interesting, this problem is valuable to practice of data interactions analysis, if it's too hard skip it for now.

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    9 months ago, # ^ |
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    Are there any easier prefix problems? Cuz I didn't understand what does this problem say

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      9 months ago, # ^ |
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      Prefix problems are usually not that easy. They involve some hard thinking, and I think they usually have a rating higher than 1100. Correct me if I'm wrong!

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      9 months ago, # ^ |
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      That's why I said it's good to think about it. Editorial just says do this and this and print answer, no tricky observations or anything complex required here. Try it again after couple days, and at some moment it will become clear and then you can turn that into a pattern for understanding it faster

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      9 months ago, # ^ |
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      you know their idea is a prefix sum, it drops their rating, for example 831C - Jury Marks, when I faced this problem, I only knew sets and prefix sum, and my teacher gave this problem, so I knew my knowledge was enough, it took 3 minutes to solve it, just because I knew the Idea, it's like that, you know they are prefix sums, etc so their rating is kinda fake

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9 months ago, # |
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all the best for your future ratings bro

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9 months ago, # |
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hey, he is solving problems at his limit, nice!

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