Invitation to CodeChef October Long Challenge 2018 sponsored by ShareChat!

mgch · October 4, 2018, 8:15pm

Hello CodeChef Community!
We’re happy to bring to you ten days of intense coding challenge with the October Long Challenge sponsored by ShareChat. Along with the opportunity to boost your ratings and win some cool laddus, there are some exciting full-time job opportunities with ShareChat for professionals across the globe. More details about these opportunities can be found on the contest page.
I hope you will join your fellow programmers and enjoy the contest problems. Joining me on the problem setting panel are:

Problem Tester and Admin: mgch (Misha Chorniy)
Editorialist: anand20 (Anand Jaisingh)
Problem Setters: l_returns (Smit Mandavia), shivam_g1470 (Shivam Gupta), jtnydv25 (Jatin Yadav), Izaron (Evgeny Shulgin), annin (Annin), bciobanu (Bogdan Ciobanu), abdul135 (Abdul Ahad), neutron_byte (Jannik Kudla), hmrockstar (Himanshu Mishra)
Statement Verifier: xellos0 (Jakub Safin)
Russian Translator: gomelfk (Fedor Korobeinikov)
Mandarin Translator: huzecong (Hu Zecong)
Vietnamese Translator: VNOI Team
Hindi Translator: srijand (Srijan Dubey)
Bengali Translator: Mohammad Solaiman (Mohammad Solaiman)

I hope you will enjoy solving them. Please give your feedback on the problem set in the comments below, after the contest.

Contest Details:

Time: 5th October 2018 (2130 hrs) to 15th October 2018 (0000 hrs). (Indian Standard Time — +5:30 GMT) — Check your timezone.

Contest link: www.codechef.com/OCT18

Registration: You just need to have a CodeChef handle to participate. For all those, who are interested and do not have a CodeChef handle, are requested to register in order to participate.

Prizes:
Top 10 performers in Global and top 20 in Indian category will get CodeChef laddus, with which the winners can claim cool CodeChef goodies. Know more here: https://www.codechef.com/laddu. (For those who have not yet got their previous winning, please send an email to [email protected])

Good Luck!
Hope to see you participating!!
Happy Programming !!

vijju123 · October 4, 2018, 9:49pm

Congrats @l_returns . Your treat is pending

aryanc403 · October 4, 2018, 10:42pm

@vijju123 very bad. I scrolled to post this comment, only to find… I demand downvotes on comments.
I’m up for the treat.

Click to view

Congrats @l_returns. @vijju123 should give the treat before @l_returns.

aryanc403 · October 4, 2018, 10:43pm

Hope we will have strong test cases in Oct. Sept. was full of weak test cases.

l_returns · October 5, 2018, 12:16am

Thanks @vijju123
Sure… Your treat is also pending

nishantaryakum · October 5, 2018, 11:45am

No laddus for solving fastest this time??

aryanc403 · October 5, 2018, 12:41pm

Considering the rate at which they are reducing prizes. After 2-3 contest all prizes will be removed.

And we will see
Prizes: None

rajput1999 · October 5, 2018, 2:22pm

the link to laddu page is not working as u putted a dot also at the end of the link

Also , eagerly waiting for challenge to start

best of luck to all : )

zacky_901 · October 5, 2018, 2:30pm

There is no such thing as “putted” sir.

pshishod2645 · October 9, 2018, 1:20pm

What are constraints on array elements in problem distring.

It’s not mentioned in problems section.

byomkeshbakshy · October 14, 2018, 4:47pm

Why the rating predictor for october challenge is still showing ‘error no contest found’?

harrypotter0 · October 15, 2018, 4:07pm

Weak test cases for SURCHESS problem WA are getting AC’s. Would love to see improved test cases for the so-called difficult problem XD

vijju123 · October 15, 2018, 5:18pm

Would have loved to see such a comment after contest/not-during-live-contest.

bazsi700 · October 16, 2018, 8:59pm

@vijju123 Why? It’s better to point it out during the contest, so something can be done during the contest. Of course it would be the best if the tests were strong enough at the start of the contest…

vijju123 · October 16, 2018, 9:57pm

Well…the reason is because, more often than not, the TCs wont be updated if its past a few days from start as many people “leave” the contest after solving those problems.

And it just encourages more people to try heuristic/non-optimal solutions to pass. Thats the main concern. Perhaps pm it or convey via private means.

aryanc403 · October 20, 2018, 4:54pm

SURCHESS - Weak TC? (Reported by Users.)
CPCOMP - I report weak TC. Ref - http://codeforces.com/contest/920/problem/E as well.
BBRICKS = https://www.spoj.com/problems/LVADER/ (Want an answer from @admin)
CHEFTAK - Search forum.

Issues with 4 out of 8 questions I have reported. Anything more @admin want ??

jagreetdg · October 20, 2018, 5:47pm

And MINDSUM’s solution was basically brute Force. Tho the challenge problem is one of my all time favorite challenge problems, unfortunately it had to have the issue during the contest.