Hello Codeforces !!

I, on behalf of  the InfInITy Team, would like to invite you to take part in InfInITy 2k20, the first ever rated contest hosted by CodeChef IIITP Chapter , which will take place on Wednesday, November 4, 2020 at 21:00 IST^UTC+5.5. It is a 2.5 hr long contest.

The contest is Rated for Div. 2 on Codechef, but Div. 1 coders are encouraged to participate unofficially as there are prizes for top participants in combined(Div. 1 + Div. 2) ranklist. We'd be offering you 6 problems with varying difficulties.

PRIZES  : Top 3 performers  (Div1 + Div 2 combined)  will be awarded cash prize of INR 5000, 3000 & 2000 respectively.

Contest Link : www.codechef.com/INFY20
Contest Timing : 21:00 to 23:30 IST
Registration For Prizes : Infinity Website

I would really like to thank:

• darshancool25 for Managing the contest , testing as well as proofreading and making suggestions for the problems.
• silentone, nishit.sharma, ay21, prerit2001 for setting & testing the problems with me.
• Codechef for their invaluable help and great platform.
• BiT Legion for making this contest possible.

For any queries contact : [email protected]
Editorials for all the questions will be posted shortly after the contest ends! .

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

UPD 1: All the editorials have been published on CodeChef discuss.

UPD 2: Congratulations to the winners! (Div 1 + Div 2)

1. Geothermal
2. nishant403
3. EnEm

Hello Codeforces!!

I, on behalf of Code Chronicles 1.0 Team, would like to invite you to take part in first ever contest hosted by collaboration of IIIT's (IIIT Pune & IIIT Bhopal), which will take place on Friday, June 19, 2020 at 20:00 IST^UTC+5.5. It is a 2.5 hr long contest. The contest will be open to everyone. We'd be offering you 8 problems with varying difficulties.

PRIZES : 250 Codechef Laddus each to Top 3 Global & Special Goodies for Top 3 IIIT ians.

Contest Link : Code Chronicles 1.0

I would really like to thank:

• silentone, nishit.sharma, ay21, avenger786, sumeet_0403 for setting & testing the problems with me.
• darshancool25 for Managing the contest , testing as well as proofreading and making suggestions for the problems.
• Codechef for their invaluable help and great platform.
• IIIT ians Network for making this contest possible.

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

Upd 1: Editorials have been published for all problems except PWCP-COCR101, which will be published by tomorrow.

Upd 2: Editorial for PWCP has been published. You can check it out below.

Upd 3: Prizes (250 Laddus) have been credited. Congratulations to the winners!

1. uwi
2. Egor
3. BohdanPastuschak

Top IIIT ians :

1. aneesh2312
2. sudoBug
3. agrawal117

Editorials :
Marking the borders-COCR104
Champak and Clocks-COCR105
Sharing is Caring-COCR106
Chef and a New Home-COCR103
Odd One Out-COCR107
Time Travel-COCR102
Maze Runner-COCR108
PWCP-COCR101

About the discrepency in Marking the borders question :

There was a discrepancy in one of the input files for the question, Marking the borders. There was a single line missing in the input file. Even then many participants got accepted, but some received WA or TLE. It was a bit surprising about how had it not come up during the testing phase, but after reviewing a couple of solutions which didn't get accepted because of this, we observed that codes using $$$scanf$$$ were getting affected. Unfortunately even though all testers had tested this question, everyone used $$$cin$$$ / $$$cout$$$. We still don't know for sure that if $$$scanf$$$ / $$$cin$$$ thing was the only difference that lead to such a result. Sorry for the inconvenience caused due to this.

We still hope that you enjoyed the problemset though, and thank you for participating!!