Bon soir(!) my algorithm-toting friends.
As you may well know, the September Cook-off goes live this Sunday, 18th September 2011.
What you may NOT know, is that this is the last short contest we’re conducting before the online round of the Amritapuri ACM-ICPC regionals 2011, which takes place on the 16th of October.
Grab the opportunity to gear up for it with the September CookOff, our warm up to the Amritapuri regionals. You’re going to need all the practice you can get!
The Cook-off will commence at 2130 hrs, IST. As usual, submission-time ends with the day. Don’t forget to bring your A-game!
Wondering what the ACM ICPC regionals are?
They are the qualifying round to the olympics of all programming competitions, the ACM ICPC World Finals, taking place in Warsaw, Poland this time! Find out more here.
Register for the Amritapuri regionals here.
Greetings CodeCheffers,
The Challenge for September 2011 has concluded, and once again, there was no exclusive winner on the Indian side of things. On the global side, however, we saw a clean victory, of which we shall inform you in just a few lines. 
Before moving on though, I’d like to mention that this month’s participation very nearly equalled the highest ever participation for a long contest; I am sincerely pleased to see so many people constructively using their free time.
Another unusual highlight was the single successful submission for the challenge problem TILT… what happened guys? The problem setter himself was surprised.
A massive under-10 tie saw the 9th rank cover nearly 140 people! Talk about neck-and-neck…
Now, for the honorary problem setters and tester, whom all of us here are deeply ingratiated to:
David Stolp, Gennady Korotkevitch, Saransh Bansal, Imran Sunny and Vamsi Kavala prepared the problems while Shilp Gupta sampled them before they were served to you.
Let’s look at some Statistics and then move on to see the final winners list.
Contest Statistics:
| Length of Contest | Unique Participants | Total Number of Submissions | User who have solved at least one problem |
| 11 days | 711 | 7845 | 447 |
| Country | Total Participants | Average Score per User |
| IN | 531 | 0.89 |
| Rest of World | 180 | 1.48 |
Winners list for the September 2011 Contest:
India:
01. Balakrishnan Varadarajan (winner of prize money Rs. 5000)
01. rudradevbasak (winner of prize money Rs. 5000)
01. Varun Jalan (winner of prize money Rs. 5000)
01. utkarsh lath (winner of prize money Rs. 5000)
05. mosquito
05. Pratik Tandel
05. sharatiitr
05. vivekitbhu
Global:
01. ACRush (winner of prize money $400)
02. ddr (winner of prize money $60)
02. hanshuai (winner of prize money $60)
02. lutyj (winner of prize money $60)
02. Oleg (winner of prize money $60)
02. s.max (winner of prize money $60)
07. Anton Lunyov
07. iscsi
07. Tony Liu
Congratulations to all, and a special mention to ACRush for being the only one to solve David Stolp’s TILT.
If you haven’t yet checked out the editorials of the problems to this month’s contest please do so here.
We are running a 2.5 hours Cook-Off that is scheduled for 18th September 2011 at 21:30 IST
If there is anything that you would like to let us know then do comment on this blog post or send in an email to feedback@codechef.com
Cheers,
Adarsh Loyal.
Hi Guys,
The August 2011 Cook-off has ended. A well balanced problem set, I hope you’ll enjoyed as much as we did organizing this contest.
This contest was made possible by our problem setter and tester Anil Kishore and Harsha S respectively. And they did an awesome job. Thank you so much for the fantastic job in putting together this problem set!
Here are the top 10 best performers of the August 2011 Cook-Off:
01. laycurse
02. allin
03. pieguy
04. mikhailOK
05. dzhulgakov
06. ilyakor
07. sdya
08. Romka
09. subscriber
10. EgorK
Take a look at the contest rankings here.
Contest Statistics:
| Length of Contest | Unique Participants | Total Number of Submissions | User who have solved at least one problem |
| 2.5 hours | 474 | 2168 | 378 |
| Country | Total Participants |
| IN | 313 |
| Rest of World | 290 |
Congratulations guys! We look forward to seeing all of you participating in the September 2011 Challenge that begins on 1st September, 2011.
Check out the contest problem editorials here.
If there is anything you would like to let us know regarding this contest then do let us know by either commenting below this blog post or by sending in an email to feedback@codechef.com.Cheers,
Harsh Munshaw
(Team CodeChef)
P.S. Winners of the contest will be contacted this week.
Hi CodeCheffers,
The August Challenge 2011 is over!
The August contest has got quite a few winners at the top this time. It seems the winners are trying to prove a point that they want to be Number 1 and will not accept the 2nd spot this month 
. Anyways back to some stats, the Global rank saw 7 participants tied at 1st place and in the Indian winners, 3 people tied at 1st place.
Overall a good contest, a fair bit of difficulty this month with only 2 problems being easily solved.
Before we move on to the next section of the blog post, a special mention of the people who made this contest possible:
Vishal Anand, Ivan Mistreanu, Snigdha Chandan, Abdullah Mahmud and Anton Lunyov were the problem setters while Shilp Gupta was the diligent tester of this month’s contest.
Lets look at some Statistics and then move on to see the final winners list.
Contest Statistics:
| Length of Contest | Unique Participants | Total Number of Submissions | User who have solved at least one problem |
| 11 days | 629 | 6873 | 364 |
| Country | Total Participants | Average Score per User |
| IN | 425 | 0.60 |
| Rest of World | 204 | 1.20 |
Winners list for the August 2011 Contest:
India:
01. Pratik Tandel (winner of prize money Rs. 6666)
01. rudradevbasak (winner of prize money Rs. 6666)
01. Varun Jalan (winner of prize money Rs. 6666)
04. suhash
05. Pradeep George Mathias
06. nikhil
07. gultus
08. calc_saransh
09. dudechandan123
10. NAMIT .D. SHETTY
11. vivekitbhu
12. prashantc29
13. jayesh02
14. Paresh Verma
15. Nilesh Hamane
16. mendax
17. deepangupta91
18. sanjay.iitg
19. bagrawal
20. theicebreaker
Global:
01. ACRush (winner of prize money $100)
01. gennady.korotkevich (winner of prize money $100)
01. meret (winner of prize money $100)
01. mikhailOK (winner of prize money $100)
01. Oleg (winner of prize money $100)
01. snapdragon (winner of prize money $100)
01. Tomasz Czajka (winner of prize money $100)
08. zhujiaye
09. qwaker00
10. wcwswswws
Congratulations to all.
If you haven’t yet checked out the editorials of the problems to this month’s contest please do so here.
We are running a 2.5 hours Cook-Off that is scheduled for 21th August 2011 at 21:30 IST
If there is anything that you would like to let us know then do comment on this blog post or send in an email to feedback@codechef.com
Cheers,
Harsh Munshaw
Hi Guys,
The July 2011 Cook-off has ended. This contest saw an unsolved problem after quite a while, the remaining problems seemed easy with over 150 users who solved 2 problems at least.
This contest was made possible by our problem setter and tester Shilp Gupta and Anton Lunyov respectively. And they did an awesome job. Thank you so much for the fantastic job in putting together this problem set!
Here are the top 10 best performers of the July 2011 Cook-Off:
01. dzhulgakov
02. laycurse
03. al13n
04. damians
05. volkhin
06. cgy4ever
07. rasifiel
08. EgorK
09. sobols
10. smylic
Take a look at the contest rankings here.
Contest Statistics:
| Length of Contest | Unique Participants | Total Number of Submissions | User who have solved at least one problem |
| 2.5 hours | 341 | 1484 | 279 |
| Country | Total Participants |
| IN | 220 |
| Rest of World | 121 |
Congratulations guys! We look forward to seeing all of you participating in the August 2011 Challenge that begins on 1st August, 2011.
Check out the contest problem editorials here.
If there is anything you would like to let us know regarding this contest then do let us know by either commenting below this blog post or by sending in an email to feedback@codechef.com.Cheers,
Harsh Munshaw
(Team CodeChef)
P.S. Winners of the contest will be contacted this week.
Hi CodeCheffers,
The July Challenge 2011 is over!
The July Contest saw some big names battle it out at the top spots. We saw some last minute changes in Indian Ranking from Ravi Kiran who managed to bag the top spot from India and Tomek Czajka who bagged the Global spot. Overall a good contest, a fair bit of difficulty mixed with some easy problems gave this problem set a good balance.
Before we move on to the next section of the blog post, a special mention of the people who made this contest possible:
David Stolp, Ivan Mistreanu, Ashwin Jain, Ashar Fuadi and Gennady were the problem setters while Shilp Gupta was the diligent tester of this month’s contest.
Lets look at some Statistics and then move on to see the final winners list.
Contest Statistics:
| Length of Contest | Unique Participants | Total Number of Submissions | User who have solved at least one problem |
| 11 days | 460 | 8189 | 327 |
| Country | Total Participants | Average Score per User |
| IN | 295 | 1.08 |
| Rest of World | 165 | 1.89 |
Winners list for the July 2011 Contest:
India:
01. Pratik Tandel (winner of prize money Rs. 12000)
02. Varun Jalan (winner of prize money Rs. 8000)
03. Prunthaban K
04. Archit Karandikar
05. sharatiitr
06. root5
07. flying_ant
08. mkagenius
09. jayesh02
10. deepangupta91
11. mukulgupta
12. sunny816.iitr
13. Praveen Kumar
14. vamsi_kavala
15. mendax
16. FrostByte
17. pikku
18. Amit Karmakar
Global:
01. Tomasz Czajka (winner of prize money $400)
02. hanshuai (winner of prize money $300)
03. chmel_tolstiy
04. Oleg
05. pperm
06. cgy4ever
07. s.max
08. tanzaku
09. xxjx
10. EgorK
Congratulations to all.
If you haven’t yet checked out the editorials of the problems to this month’s contest please do so here.
We are running a 2.5 hours Cook-Off that is scheduled for 24th July 2011 at 21:30 IST
If there is anything that you would like to let us know then do comment on this blog post or send in an email to feedback@codechef.com
Cheers,
Harsh Munshaw
Hi Guys,
gennady.korotkevich clinches it once again with his last minute submission to beat tanaeem and increase the gap at the top of our short contest ratings!
The June 2011 Cook-off has ended. A well balanced problem (well slightly mathematical 
) set, we did not see any participant solve all 5 problems though.
This contest was made possible by our problem setter and tester Anton Lunyov and Rajiv Kumar respectively. And they did an awesome job. Thank you so much for the fantastic job in putting together this problem set!
Here are the top 10 best performers of the June 2011 Cook-Off:
01. gennady.korotkevich
02. tanaeem
03. Romka
04. maksay
05. pieguy
06. KADR
07. xcwgf666
08. gerald
09. Ra16bit
10. mmirzayanov
Take a look at the contest rankings here.
Contest Statistics:
| Length of Contest | Unique Participants | Total Number of Submissions | User who have solved at least one problem |
| 2.5 hours | 413 | 2302 | 247 |
| Country | Total Participants |
| IN | 171 |
| Rest of World | 117 |
Congratulations guys! We look forward to seeing all of you participating in the July 2011 Challenge that begins on 1st July, 2011.
Check out the contest problem editorials here.
If there is anything you would like to let us know regarding this contest then do let us know by either commenting below this blog post or by sending in an email to feedback@codechef.com.Cheers,
Harsh Munshaw
(Team CodeChef)
P.S. Winners of the contest will be contacted this week.
Hi CodeCheffers,
The June Challenge 2011 is over!
The June contest saw some interesting participation in the first couple of days. In the Indian rank list we have a tie for the 5th place between 4 people and 11th place between 14 people and in the Global list we have a tie for the 14th place between 7 people. During the contest we had faced an xss attack on our site due to which we had to bring the site down for a few hours and extended the contest by a day. We are fully functional now. You can read more about the attack here.
Before we move on to the next section of the blog post, a special mention of the people who made this contest possible:
David Stolp, Tomaz Hocevar, Ivan Mistreanu and Rahul Gulati were the problem setters while Shilp Gupta was the diligent tester of this month’s contest.
Lets look at some Statistics and then move on to see the final winners list.
Contest Statistics:
| Length of Contest | Unique Visitors | Unique Participants | Total Number of Submissions | User who have solved at least one problem |
| 11 days | 653 | 9434 | 324 |
| Country | Total Participants | Average Score per User |
| IN | 450 | 0.62 |
| Rest of World | 203 | 1.67 |
Winners list for the June 2011 Contest:
India:
01. suhash (winner of prize money Rs. 12000)
02. Pulkit (winner of prize money Rs. 8000)
03. coders1122
04. Prunthaban K
05. Balakrishnan Varadarajan
05. Gagandeep Bhatia
05. Pradeep George Mathias
05. sushilnath
09. loonydmad
10. Gunjan Sharma
11. chakradarraju
11. deepangupta91
11. flying_ant
11. ??
11. kashyap_kumar
11. kaushik.mv
11. pikku
11. Surendra
11. root5
11. SIGSEV
11. smithinsu
11. sppraveen
11. theeporithirumugam
11. yash_coder
01. gennady.korotkevich (winner of prize money $400)
02. hanshuai (winner of prize money $300)
03. Oleg
04. dumbear
05. shindo
06. pasin30055
07. gerald
08. nileshdalvi
09. qwaker00
10. alexey_enkov
10. gt
10. dzhulgakov
10. EgorK
10. orfest
10. s.max
10. wywcgs
10. xfastx
Congratulations to all.
If you haven’t yet checked out the editorials of the problems to this month’s contest please do so here.
We are running a 2.5 hours Cook-Off that is scheduled for 19th June 2011 at 21:30 IST
If there is anything that you would like to let us know then do comment on this blog post or send in an email tofeedback@codechef.com
Cheers,
Harsh Munshaw
Hi Guys,
The May 2010 Cook-off has ended. A well balanced problem set, in which we saw some of the big names participate just a day before the ACM ICPC world finals.
This contest was made possible by our new problem setter and tester Anil Kishore and Harsha S respectively. And they did an awesome job at it. Thank you guys so much for the fantastic job in putting together this problem set!
There was an issue with judging Java submissions for one of the problems, which was reported by Mikhail during the contest, and after identifying the issue we decided to rejudge them. The rank-list changed after the contest was over, which was unfortunate. We sincerely apologize to vitar and laycurse, as they have been the most affected due to this lapse from our side.
We also had an issue with our commenting system during the contest which was caused due to a bug in our system. Apologies for the inconvenience caused. This has been fixed now and we request you to get back to the editorials and start commenting your doubts to our problem setter and tester. Your queries will be definitely answered there.
And we are also facing another issue with viewing solutions for the COOK10 problems. We are yet to figure out why this happened. We are investigating this and this may take us some time. We will keep you posted, please bear with us until then.
Finally, here are the top 10 best performers of the May 2011 Cook-Off:
01. mikhailOK
02. vitar
03. laycurse
04. EgorK
05. gennady.korotkevich
06. allin
07. niyaznigmatul
08. Milanin
09. dzhulgakov
10. emppu
Take a look at the contest rankings here.
Contest Statistics:
| Length of Contest | Unique Participants | Total Number of Submissions | User who have solved at least one problem |
| 2.5 hours | 442 | 2255 | 315 |
| Country | Total Participants |
| IN | 276 |
| Rest of World | 166 |
Congratulations guys! We look forward to seeing all of you participating in the June 2011 Challenge that begins on 1st June, 2011.
Check out the contest problem editorials here.
If there is anything you would like to let us know regarding this contest then do let us know by either commenting below this blog post or by sending in an email to feedback@codechef.com.Cheers,
Harsh Munshaw
(Team CodeChef)
P.S. Winners of the contest will be contacted this week.
Hey CodeCheffers,
As you may have noticed, over the past couple of months, we have tried to schedule all our CookOffs on the second last Sunday of every month. However, things will be a little different this month.
Due to the May CookOff clashing with both, Google’s CodeJam and CodeForces’s contests, we are re-scheduling the Cookoff to the 29th of May, 2011. i.e. The last Sunday this month.
Hope to see you all there.
Regards,
Harsh Munshaw
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