Low teaching quality of editorials

@vijju123 Out of topic :- Can you suggest something, like what to do in such situations:-

“You know your solution idea is correct, but it fails 1-2 cases, now, even though you check it with other solutions and editorial, no difference can be spotted after running over self-generated test cases… so in such cases how can we know which test case is the one where our code is failing on Codechef?”

Try the N=1 corner case :stuck_out_tongue:

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Ok sir :stuck_out_tongue: :stuck_out_tongue: I am even ready to pay to Codechef for buying testcases :stuck_out_tongue: :stuck_out_tongue: :stuck_out_tongue:

i think the complaint should be about contests and not editorials
codechef problems are great but they are put in a way such that the contest becomes unbalanced
https://www.codechef.com/COOK110B
i am not a big fan of codechef contests
also codechef rating system is not so strict
it offers free rating everytime
u will get a rise even if u dont solve any problem

and u will get +150 if u write 5 lines of code for 5 mins and then sleep

but the problems themselves are so interesting and the editorials are great
when i try to solve problems from practice section …i learn a lot
and the editorials are so good that u can get the thinking ability u need to solve
other similar problems(especially if the editorialist is vijju bhai :heart_eyes:)

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Not in a mood to argue but try to understand that if your rating is as low as 1270, it will increase no matter how you perform according to calculations, but this effect stops as soon as you reach close to 1400…so not a problem really…

And if it is so easy and free to get ratings here why only 10-7 people are 7-stars in India… everybody should have very high rating by now according to your logic…

And about 5 lines and sleeping, try that in last time cookoff and you’ll see how hard it hits your rating, even if you are in div-2… just solving 1 qn is not enough to get enough rating boost these days…you can try it out yourself…

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What do you mean by “unbalanced” here? In div1, problems with fewest solves are SAVJEW and the 2 div1 - exclusives. I don’t see any unbalanced issues.

@vijju123, for problems that requires “visual” as he said to understand, they are most likely graphs and geometry anyway, which can be easily drawn out by the reader. The kind of stuff that is harder to do so is probably a DP table, but who the hell displays THAT in an editorial.
I do agree with your other points.
Also, I suggest you this: For questions that are related to an editorial you write and actually is valid like: wrong equations, wrong variable being shown, … sure, reply and tell them you have fixed it. But just don’t reply to the stupid - ass questions like “omg how do I learn digit dp”, “omg what is Cauchy - Schwartz”, “omg how did you come up with this solution”, …, it ain’t helping causes. Just let them talk to themselves and see that no one actually cares.

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that is bad
when would they learn if their ratings never fall

but codeforces calculations are such that people even get negative ratings
and so the ratings have more value

and that’s how you see 4 stars here asking “what is dp” and “what is recursion”.

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And then there are ppl who only solve Div-1 last problems when they are in div-2, so they never come to Div-1 :joy:

Guys likes these are to be blamed for good performance of noobs :stuck_out_tongue:

That is bound to happen when just math is asked in a Long-Challenge :stuck_out_tongue:

Hello everyone,

I have tried to make video solutions for the problems I have solved in September Long Challenge 2019, hoping to help people understand the problem and what was my approach for the same.
I created a playlist for the same: Codechef September Long Challenge 2019: Video Solution Playlist

Please do like the video and do subscribe for more such content.

Happy Coding
Divyanshu Kumar

Ummm… definitely not me okie? Im a nooby 3 star

No, you are “just1star” noobie :stuck_out_tongue: (In reality, a 7-star hiding with the mask of 3-stars :stuck_out_tongue: )

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This maybe to you but if you think of someone who has just begun writing loops ( Basically I meant has just started to learn some language ) ; and trying to solve the question ( Even 1st question of a div 2 contest ) ; what about him…?

What we already know will always be boring ; and what we find difficult to understand will always be small and under-explained… I think we should not comment upon length at least…

Bro for beginners I say… They will not read editorials because so much complex logic and lengthy language is written ( may be easy but yes they are just beginners on cc) .

I think editorials should be explained with examples along with corner test cases.

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Correct.


I find editorials to be great in codechef. I am sure if someone read it properly they will understand it.I don’t understand why you guys are complaining about editorials. If you don’t understand anything you can always comment and ask.

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The quality of content on G4G stands nowhere in place of CodeChef’s. They do have some good tutorials and solutions but many a times things are plain wrong, this is because now-a-days literally anyone puts a question/topic over there. One thing on top of my mind is this question- Smallest subarray with sum greater than a given value - GeeksforGeeks, the optimal solution given to the problem is wrong and haven’t been corrected by them. Also, as @aryanc403 said, G4G is not a site for Competitive Programming, it’s a site for Interview Preparation. Both are different. For CP I would prefer cp-algorithm and blogs from sites like Codeforces, CodeChef, TopCoder and HackerEarth.
And having read editorials on Hackerrank, Codeforces and Codechef, I would say that CC has indeed the best editorials, I wish @vijju123 wrote more of these. Sometimes, they may not be good but then there is always a comment section to point out the flaws and ask for clarifications.

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You can save your money by guessing the testcases because problem setters are very lazy.