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Invitation to CodeChef June Long Challenge 2018!

Hello CodeChef Community! We’re excited to announce the June Long Challenge 2018. We hope to see you all join us in these ten intense days of coding challenges. Joining me on the problem setting panel are:

  • Problem Tester: mgch (Misha Chorniy)
  • Problem Authors: adlet_zeineken (Adlet Zeineken), (Noszaly Aron), (Jitender Sheora), (Phuc Hong), (Rehijm Memmedli), teja349 (D Teja Vardhan Reddy), pieguy (David Stolp), barenuz (Ihor Barenblat), ratingoverflow (Tianyi Qiu)
  • Problem Editorialist: likecs (Bhuvnesh Jain)
  • Statement Verifier: xellos0 (Jakub Safin)
  • Russian Translator: xcwgf666 (Sergey Kulik)
  • Mandarin Translator: huzecong (Hu Zecong)
  • Vietnamese Translator: VNOI Team

Contest Details:

Time: 1st June 2018 (1500 hrs) to 11th June 2018 (1500 hrs). (Indian Standard Time — +5:30 GMT) — Check your timezone.

Contest link: https://www.codechef.com/JUNE18

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 global and top 20 Indian winners get 300 Laddus each, with which the winners can claim cool CodeChef goodies. Know more here: https://discuss.codechef.com/questions/51999/how-do-i-win-a-codechef-goodie. (For those who have not yet got their previous winning, please send an email to winners@codechef.com). First to solve each problem individually: 100 laddus (For problems common to both Divisions, only one user will get laddus for that problem).

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

This question is marked "community wiki".

asked 01 Jun, 10:46

mgch's gravatar image

6★mgch
3451125
accept rate: 23%

edited 03 Jun, 22:24

aryanc403's gravatar image

6★aryanc403
2.0k414


Long time since @likecs was an editorialist!! :)

Looking forward to the contest :) . Tiayani’s Q will be a challenge to do, my personal experience xD :)

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answered 01 Jun, 11:53

vijju123's gravatar image

5★vijju123 ♦
14.8k11856
accept rate: 18%

edited 01 Jun, 11:54

I guess you are wrong this time @vijju123

(02 Jun, 02:24) taran_14076★

What are to hinting at, @taran_1407

(02 Jun, 07:50) vijju123 ♦5★

Tiayani's question will be a challenge.

No, he didnt set the challenge problem.

That's what i meant

(02 Jun, 15:47) taran_14076★
1

:/ . I meant his question will be a challenge, (i.e. tough) to solve. :)

(02 Jun, 15:56) vijju123 ♦5★

Yes, his problem is surely challenging.

(02 Jun, 16:35) taran_14076★
1

Yes, they are challenging. And it can be verified by seeing no of submissions of contest page.

(03 Jun, 20:11) aryanc4036★
showing 5 of 6 show all

Please note-

ANYONE FOUND DISCUSSING A PROBLEM FROM LONG CHALLENGE, WHETHER IN FORM OF TEST CASES, OR FULL SOLUTION, SHALL BE SUSPENDED FROM DISCUSS WITH IMMEDIATE EFFECT (For 10 days). FURTHER, THEIR NAMES SHALL BE GIVEN TO CONTEST ADMIN FOR FURTHER PENALTIES, IF REPEATED OFFENDER.

The above rule is effective from this moment.

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answered 02 Jun, 02:17

vijju123's gravatar image

5★vijju123 ♦
14.8k11856
accept rate: 18%

edited 02 Jun, 02:18

1

Request to everyone. If a question on forum is of live contest. Do report it to admins via comments of that question. And don't answer question with replies to person (who asked) to remove content. Answering this also bring that question on front page and hence brings that question in eyes of more people.

And a request to admins please add ^^ answer of @vijju123 as an announcement on contest page. I don't know why but ^^ above trend in increasing from this contest. Which is a cause of worry for us.

(03 Jun, 20:09) aryanc4036★
1

U can even really report it with "report" button below question.... Do not forget to select it's about ongoing contest on it while reporting...

(03 Jun, 20:30) l_returns5★

Yes, this can be done but We are restricted to at most 5 report per day. And this takes time to view these questions after report. I don't know how exactly moderator see list of all questions which are reported but action is not taken yet. But if they are not then they should be sorted in decreasing order of severity of issue.

(03 Jun, 20:40) aryanc4036★
1

But if codechef programmers(designers) preferred report button over comments for reporting then I think it would obviously be a better option... Though u can comment to aware other programmers about it...

(03 Jun, 20:51) l_returns5★
1

I like the idea. Will ask @mgch

(03 Jun, 21:35) vijju123 ♦5★

Hoping to do a lot of coding fun in upcoming ten days

codechef long contests are best : )

best of luck to all

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answered 01 Jun, 15:28

rajput1999's gravatar image

4★rajput1999
1826
accept rate: 0%

Why is there ACM style rank list for Div.1?

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answered 01 Jun, 17:15

yadnesh_viper's gravatar image

2★yadnesh_viper
23018
accept rate: 0%

Is the issue resolved now?

(01 Jun, 20:30) vijju123 ♦5★

Yes, but what happened?

(02 Jun, 01:34) sarthakmanna6★
(02 Jun, 01:39) vijju123 ♦5★

Contest submissions are not getting updated in the profile page.

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answered 02 Jun, 09:51

tihorsharma123's gravatar image

4★tihorsharma123
49718
accept rate: 15%

Yeah I think there is some maintenance going on codechef.. hence..

(02 Jun, 13:06) l_returns5★
(02 Jun, 13:07) l_returns5★

That too is not working for now ...

Plz admin fix it

(02 Jun, 14:03) vivek_19982996★

@vijju123 @admin When will the editorial For May Long Challenge Q- RUBBER will be posted?

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answered 03 Jun, 22:17

rds_98's gravatar image

2★rds_98
456
accept rate: 9%

Dont know when it will be posted but maybe this link could help you
discuss.codechef.com/questions/127330/need-help-in-rubber-band-problem

(03 Jun, 22:34) l_returns5★

I will remind @mgch about it again.

(03 Jun, 23:46) vijju123 ♦5★

editorial is already out now.. check discuss....

(04 Jun, 14:40) l_returns5★

Prizes: Top 10 global and top 20 Indian winners get 300 Laddus each. If I am an Indian participant, in order to win 300 laddus, I need to be in top 20 in India rank list or global ranklist?

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answered 05 Jun, 19:38

abhineet14's gravatar image

5★abhineet14
4318
accept rate: 16%

1

AFAIK, its Indian.

(07 Jun, 17:58) vijju123 ♦5★

Update: Since there is problem in linking of solutions from codechef side, you can view the editorialist solution here

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answered 11 Jun, 16:40

likecs's gravatar image

6★likecs
3.7k1978
accept rate: 9%

liked your idea of sharing it through git hub till they get linked :)

(11 Jun, 17:22) l_returns5★

I am a beginner in competitive world,,And i have been feeling long challenge division styles are harder than old style ( same for all participants ) becoz i used to solve 3-4 problems in old long challenge style but now i always be able to solve only first problem.. I have noticed the differences between the submissions of Q-1 and Q-2..

is this long challenge new division style good for beginners ?

Any suggestion ?

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answered 11 Jun, 21:14

sapjv's gravatar image

2★sapjv
513
accept rate: 0%

If anything this form should be better for beginners, assuming the character of the problems is still similar. The really hard problems are div 1 specific and the quite easy ones are div 2 specific. The difficulty curve (number of correct submissions per problem) is actually similar in both divisions. The reason why Q1 vs Q2 is a bit harsher in div 2 is because that Q1 is quite easy while Q2 is non-trivial.

(11 Jun, 22:00) algmyr7★

According to me div2 guys must find it normal as I had one friend participating first time in a "contest" and he also not found it very tough...

But I am in div1 and I find it difficult to survive for sure... but it will be nice for me.. I ll be used to solving tough questions..
though I ll not enjoy contest that much but its fine....

So yes for beginners div2 is completely fine according to my opinion...(though I find it tough for div1)

(12 Jun, 00:43) l_returns5★
1

just be confident, prepare enough , google things and don't give up..
u will surely improve...

(12 Jun, 00:53) l_returns5★

My feedback -
Questions were nice with unexpected difficulty level wrt May18. This difficulty should continue in future also. One visible difference seen was with no of submissions. There should be 2 more questions in between NAICHEF and BINSHFFL. I'm not asking for easy questions/spoonfeed in future but we can increase no of questions in long challenge. And 2 questions which should be inbetween can be marked as NON SCORABLE PROBLEMS FOR PRACTICE for both divisions. so that we can have both version of contest July18 = (May18+June18).

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answered 12 Jun, 01:08

aryanc403's gravatar image

6★aryanc403
2.0k414
accept rate: 10%

you means adding NON SCORABLE questions which are "non scorable" for both divisions ??
Why it will be useful ?? I mean If you wanna do some extra questions "Codechef practice" or many other websites are already available...
So what's point in adding them to contest ??

(12 Jun, 01:22) l_returns5★

Point is the answer just above it ^^ . But they can be removed after some time. Just for transition phase.

(12 Jun, 03:08) aryanc4036★
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question asked: 01 Jun, 10:46

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last updated: 12 Jun, 03:08