Hello everyone!
I would like to invite all of you to participate in October Circuits '20. It's a coding marathon that opens at Oct 17, 15:30 UTC and runs for 7 days, closing on Oct 24, 15:30 UTC. Please make sure to check your time zones.
The problems were prepared by me. Thanks to Arpa for coordination and MhdMohammadi for testing and haas, Haghani, ... for creating tps and MikeMirzayanov for testlib.h .
Problem statements are short but they contain easy to ignore story parts, the stories are about two character named M and Y: 
This coding marathon challenges you with 8 problems. You are expected to solve 7 algorithmic and 1 Approximate programing problem over a period of 7 days.
The timeline of the challenge is as follows:
Day 0: Problem 1, Problem 2, Problem 3
Day 1: Problem 4, Problem 5
Day 4: Problem 6, Problem 7
Day 6: Problem 8
Day 7: Challenge ends
New problem statements will be published every 48 hours.
Remember, this is a rated contest and there are amazing vouchers for top three coders.
For more information, visit the contest's official web page.
UPD: There are some defects in some of tests for problems Two paper I and Expectation, I fixed tests but because of incomprehensible hackerearth admins neither me nor Arpa are not allowed to modify tests so the only way is to consider score in problem Two paper I is from 64 and in problem Expectation is from 60 (they are all correct), Sorry all.
UPD2: Editorial is published, it should be published by HacherEarth weeks ago.
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UPD: There are some defects in some of tests for problems Two paper I and Expectation, I fixed tests but because of incomprehensible hackerearth admins neither me nor Arpa are not allowed to modify tests so the only way is to consider score in problem Two paper I is from 64 and in problem Expectation is from 60 (they are all correct), Sorry all.It was not required. It is implicit that there are always some faults in hackerearth contests.
Hi amsen , I think there is also some fault in the sample test case of Expectation. The answer should be $$$34/16$$$ and not $$$34/4$$$. Corect me, if I am wrong.
yes for n=2 34/16
for n=3 176/64
hope it helps
cheers
Will an editorial be posted?
So how one guy got 68 in Two paper?
How to solve Two papers I ? There is only code, no editorial.
Please help how to solve Two Papers problem, there is no editorial :( amsen
I've written editorial for all problems one day before the contest starts, I don't know why it is not published yet, i will ask for it.
Thanks for your reply. It is least expected from hackerearth that they will post your editorial. Can you please share the link of doc/html of your editorial, in this CF blog post.
Can you please provide link to your editorial?
Can you please share the doc for editorial ?
amsen Share the editorial please, otherwise the contest will go waste as we didn't learn anything, even though the problems were nice :(
I've written editorials about two weeks ago and they haven't published it yet? :/
I will copy my editorials to a cf blog as soon as possible.
Auto comment: topic has been updated by amsen (previous revision, new revision, compare).