123gjweq2's blog

Are people really that much better nowadays?
By 123gjweq2, history, 6 weeks ago, In English

This problem: https://codeforces.me/contest/733/problem/E

is the exact same as this one: https://codeforces.me/contest/1936/problem/B

except the former one is like 8 years older than the latter one. The former one is rated $$$2400$$$, while the latter one is rated $$$2000$$$. Does this mean that a candidate master today would've been a grandmaster 8 years ago?

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6 weeks ago, # |
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When knowledge is more freely available, people become better

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    6 weeks ago, # ^ |
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    I think people's IQ increases very slowly. I just guess that because in ancient times, there were many smart people; if they were in modern times, they would be 'smarter' too.

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6 weeks ago, # |
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Damn, I wanted to upvote but missclicked downvote. Sorry man.

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    6 weeks ago, # ^ |
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    It's ok. Just make sure to do better in the future.

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    6 weeks ago, # ^ |
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    Mike should implement undoing a down/upvote, or at least if you downvoted and then upvoted the upvote should undo the downvote and vice versa.

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    6 weeks ago, # ^ |
      Vote: I like it +22 Vote: I do not like it

    Do not worry, make an alt to upvote it.

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    6 weeks ago, # ^ |
    ← Rev. 3   Vote: I like it 0 Vote: I do not like it

    Upvote twice from other accounts

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6 weeks ago, # |
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I think it's a combination of people getting actually better and the tendency of harder problems being overrated. Note that the former one is an E problem, so most people had to spend most of the time on A-D already, and there were not enough time left for them even to try E.

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    6 weeks ago, # ^ |
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    And we try hard for B(assuming it's solvable), but not much for E(assuming it's hard).

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6 weeks ago, # |
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Also, in the old days when the pretests are weak, it's possible someone with an almost correct submission to be hacked/FST, and they won't be considered solved the problem during the contest. Hence affecting difficulty calculation.

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6 weeks ago, # |
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It is not easy to compare the rating of problems in this case. To solve E you had to solve A, B, C, and D, to solve B you only had to solve A. Naturally, E would have a higher rating.

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6 weeks ago, # |
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You are comparing div 2 to div 1 which is not that fair. Also, the problem statement is rather long on the first one.

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    6 weeks ago, # ^ |
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    So that div2E problem it's like a div1C?

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      6 weeks ago, # ^ |
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      When div 1 + 2 rounds happen, div. 2 E is usually the same as div. 1 C. But -is-this-fft- says that div. 1 C's are usually less standard than regular div. 2 E's, so they aren't exactly the same.

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6 weeks ago, # |
  Vote: I like it +17 Vote: I do not like it

People of the past had a skill issue

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    6 weeks ago, # ^ |
    ← Rev. 3   Vote: I like it -23 Vote: I do not like it

    That's why People of the past can't cross 4000+ rating... You know who !!!

    xD. Hope you get Sarcasm.

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6 weeks ago, # |
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Because it's a binary search, even with hard implementation.

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6 weeks ago, # |
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I believe it's true I was able to solve few 1900 problem without looking editorial or other ppls code but that's not the case for recent 1900. See problem like 2021C2 - Adjust The Presentation (Hard Version) or 2002D1 - DFS Checker (Easy Version) compare to 1900 problem from 6xx, 7xx cf round it's actually insane. 1900 problem in past more like 1700 nowadays.

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    6 weeks ago, # ^ |
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    I've noticed that too. Older problems also seem to use a bit more DS/A.

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6 weeks ago, # |
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Just saying this problem is rated 2800. https://codeforces.me/contest/10/problem/D

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6 weeks ago, # |
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you're right! I have been upsolving 1900 rated problems and definitely feeling the difference between old and new problems.

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6 weeks ago, # |
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When I start doing high rated problem then my level I first try the last page then second last . . . cause the last page problem are lot easier then first page I even see some 1400 rated last page problem which are easier then 1000 first page problem.

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6 weeks ago, # |
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A second hand product is always lower priced

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    6 weeks ago, # ^ |
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    Even though I don't agree with you, the world needs more proverbs like this: proverbs that you can just drop from time to time and everyone will know what you're talking about.

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6 weeks ago, # |
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Kindoff yeah. It's not necessarily a thing of skill (even tho the skill increased), like 8 years ago there were less people doing cf's and therefore the ratings were not really accurate (for our time). One would argue that generally the same ratio of "good" and "bad" people enter codeforces therefore the ratings should remain the same but i don't think so, nowadays codeforces is much more mainstream.

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6 weeks ago, # |
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Don't know about others but I get worse every day

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