Aloo Parathas,
Congratulations to everyone who competed in the November contest. Winners for this month are:
India:
1. Ajay Somani – Rs. 22000
2. Anshuman Singh – Rs. 13750
3. Gaurav Agarwal – Rs. 11000
4. Yash – Rs. 5500
5. Akhil Ravidas – Rs. 2750
US:
1. Josh Metzler – $440
2. Po-Ru Loh- $275
3. Tomasz Czajka – $220
4. Balakrashnan Varadarajan – $110
5. Varun Jalan – $55
Fun Facts for this contest:
- Congratulations to Josh who not only has his first, first place but was also justified his selection of programmer of the month 🙂 way to go buddy!
- Despite a consistent stay on the leaderboard, Ajay Somani has his first solo first place finish (previously he had tied for first back in April).
- Welcome to our first time top fivers – Yash and Akhil Ravidas
- Special shout out to our Mark Greve who got another top 10 finish (his 3rd) and zhujlaye a newcomer to the top ten.
- The top four Indian performers are all current or former IIIT Hyderabadians.
- The Best Box was our most solved contest problem of all time (244 AC)
- Help the DJ was the most solved challenge problem of all time (86 AC)
- The first time that the top 10 global participants differ by less than 0.004 points.
Contest Statistics:
| Length of Contest | Unique Visitors | Unique Participants | Total Number of Submissions | Percentage of user who have solved at least one problem |
| 10 days | 11,159 | 338 | 8401 | 79.58 |
| Country | Total Participants | Average Score per User |
| IN | 265 | 1.21 |
| US | 31 | 2.14 |
| Rest of World | 42 | 2.12 |
Test Cases:
Test cases for the november contest can be found here.
Upcoming Contests:
In case you missed it check out the CodeChef Snackdown taking place on Nov 21st. This is really exciting for us, not only because its our first ever team competitions but we will also be hosting an onsite finals for the top teams of Indian college students.
We are planning another team competition open to students and professionals globally. Dates haven’t been finalized but stay tuned for more details.
Please let us know what you thought of this contest, and if you have any ideas on how we can make the site better.
Cheers,
Amit
Congratulations to Josh and Ajay.Thanks again for the wonderful contest problems. I really enjoyed the “Help the Judge” problem. It was really fun coding tests for a 2-SAT problem.I don't know how true this is for the rest of the crowd participating in codechef. But I am really learning an awful lot from these contests.Just as a side-note : Having only 1 challenge problem causes a high variance in the rank list. As you can see the difference between the top-10 people is just 0.004. A way to eliminate this kind of problem is to either have multiple challenge problems(may be two) or to make the non-challenge problems much tougher(I do not support this idea).
Congratulations to Josh and Ajay.
Thanks again for the wonderful contest problems. I really enjoyed the “Help the Judge” problem. It was really fun coding tests for a 2-SAT problem.
I don't know how true this is for the rest of the crowd participating in codechef. But I am really learning an awful lot from these contests.
Just as a side-note : Having only 1 challenge problem causes a high variance in the rank list. As you can see the difference between the top-10 people is just 0.004. A way to eliminate this kind of problem is to either have multiple challenge problems(may be two) or to make the non-challenge problems much tougher(I do not support this idea).
Congratulations to all the winners.As Balakrishnan suggested the problem set might be a combination of problems of varying difficultly with 1 or 2 problems a bit tricky/harderMoreover, I support the idea of only 1 challenge problem per contest. It allows you to focus, trying different strategies and getting better and better solutions.
Congratulations to all the winners.
As Balakrishnan suggested the problem set might be a combination of problems of varying difficultly with 1 or 2 problems a bit tricky/harder
Moreover, I support the idea of only 1 challenge problem per contest. It allows you to focus, trying different strategies and getting better and better solutions.
I'd prefer the idea of having one or two hard problems in the contest, to make problems other then tie breaker have an impact on the rankings. But those problems shouldnt be as hard that nobody solves them (Although this is very unlikely considering the quality of participation from some of the US guys)June and September contest are perfect examples.
I'd prefer the idea of having one or two hard problems in the contest, to make problems other then tie breaker have an impact on the rankings. But those problems shouldnt be as hard that nobody solves them (Although this is very unlikely considering the quality of participation from some of the US guys)
June and September contest are perfect examples.
I'm not really sure if multiple challenge problems would help, because unless they were very well balanced it would render one of them pointless. For example, if you combined the Help the DJ problem with one of the challenge problems in the earlier contest, then everyone would score so closely in Help the DJ that all you would need is a semi-decent program here, and the other challenge problem would have a bigger range in scores and thus be the sole deciding factor.Having a couple of very hard problems would be the best idea like ajaysomani mentioned below, though of course that is very hard to do from Codechef's side of things :)I think the challenge problem wasn't the best this time – while it was an interesting problem (and all credit to the top scorers), when you are aiming to improve by 1 solitary point over 20 test cases, a lot of luck is involved; my best improvement was when I had a bug in my code :)Still, an enjoyable contest as always. (Definitely need to make sure the time limits are sorted next time though – you'll notice a heap of the solutions, including mine, involved submitting a massive number of solutions to reverse engineer the time limit for each test case. Had to do the same thing last contest too.)
I'm not really sure if multiple challenge problems would help, because unless they were very well balanced it would render one of them pointless. For example, if you combined the Help the DJ problem with one of the challenge problems in the earlier contest, then everyone would score so closely in Help the DJ that all you would need is a semi-decent program here, and the other challenge problem would have a bigger range in scores and thus be the sole deciding factor.
Having a couple of very hard problems would be the best idea like ajaysomani mentioned below, though of course that is very hard to do from Codechef's side of things 🙂
I think the challenge problem wasn't the best this time – while it was an interesting problem (and all credit to the top scorers), when you are aiming to improve by 1 solitary point over 20 test cases, a lot of luck is involved; my best improvement was when I had a bug in my code 🙂
Still, an enjoyable contest as always. (Definitely need to make sure the time limits are sorted next time though – you'll notice a heap of the solutions, including mine, involved submitting a massive number of solutions to reverse engineer the time limit for each test case. Had to do the same thing last contest too.)