abhilak's blog

By abhilak, 9 years ago, In English

Hello everyone,

I would like to invite you to participate in a contest on Codechef. The contest is being organised by Programming Club IIT Kanpur. This is our second monthly contest. It is a 5 hours long "Individual" contest scheduled to start at 19:00 IST on 21/01/2015 (Wednesday) check here for the exact time for you. The contest has been prepared by me , triveni and patch_adams. We would also like to thank PraveenDhinwa for helping us prepare this round.

You can see the previous contest here : http://www.codechef.com/WPC1401
Contest link is : http://www.codechef.com/WPC1501

Top 8 student performers Globally and 7 from IIT Kanpur will get Codechef Goodies :)

Expecting a grand participation!

Hope you will enjoy the problems !

Best of Luck and Happy Coding !

EDIT 1 :: Contest starts in 5 minutes :) . Good Luck !!

EDIT 2 :: The contest is over! !

Congratulations to lebron for winning the contest.

Congratulations to thenextgen for topping the Indian tally.

And last but not the least congratulations to myselfmanish who ranked best among IIT Kanpur students.

And Congratulations to all my fellow coders for making this event successful.

Please give us some unbiased reviews about the contest here. It will help us organizing the contest in much better way next time.

Final Stats about the contest::

Total Users/Teams who have made a submission: 1504

Total Submissions: 9017

Number of distinct users/teams with correct submissions: 1047

Total users from India: 1435

Total users not from India: 69

  • Vote: I like it
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  • Vote: I do not like it

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9 years ago, # |
  Vote: I like it +9 Vote: I do not like it

Where are my goodies from the last time?

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    9 years ago, # ^ |
    Rev. 2   Vote: I like it +3 Vote: I do not like it

    Win this contest too and get goodies for both contests together.

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9 years ago, # |
Rev. 2   Vote: I like it +13 Vote: I do not like it

502 Bad GateWay :( as usual.

UPD : It started working now.

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9 years ago, # |
  Vote: I like it +9 Vote: I do not like it

Cannot access problems, it tells "page not found".

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9 years ago, # |
  Vote: I like it +2 Vote: I do not like it

Nice contest (although codechef issues are disturbing)! Excited to see myself with same number of solved problems as I_love_Tanya_Romanova and savinov.

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9 years ago, # |
  Vote: I like it 0 Vote: I do not like it

I also really liked the problems, especially "Chaapu and Parcels", "Factorization", and "Traveller Chef" (all of which I couldn't solve during contest = (

)

In the problem "DOTS Player" I found a little confusing the term "rectilinear", here it says it's any straight line, not just one parallel to coordinate axis, so I thought you could move to any point such that the gcd of the differences of their Xs and Ys coordinates were 1, maybe you should have given another sample input showing this.

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9 years ago, # |
  Vote: I like it +3 Vote: I do not like it

Thanks you for an interesting contest :)

I wasn't much surprised to see CodeChef not working during contest — it is just "as usual", from my personal experience of CodeChef contests. It wasn't author's fault, and it even says about contest popularity :) BTW, original contest duration was 5h or 6h? This announcement says about 5h, while there are nothing about contest extending at CodeChef Announcements and in Rules and Regulations duration is set to 6h.

While I wasn't surprised by crashing CodeChef, situation with Chapu and Matisee really surprised me. It was a new experience for me:

- ok, Traveller Chef is done, now I have to choose between Factorization and Chapu and Matisee; I already have a lot of wrong submissions on Factorization, solving it will give me huge penalty time, let's focus on Chapu and Matisee instead.

- (150 lines of code later) now let's refresh contest page to see what is going on. Wait, where is Chapu and Matisee?..

Why did you decided to delete problem from a contest? You had no problems with this task, testcases were good, statement was clear, it does not look like copy-paste of some old problem in a way which allows us to find it using Google, linked COCI problem had completely different story (even if math.model of a problem was clearly same; even if testcases were same — it does not matter), it happened in second part of contest, but you still decided to delete a task?

I've seen Traveller Chef before, i've seen Chaapu and Parcels before, i've seen Long Drive before, i've seen Devu and Churu before. Is it a reason to delete half of problemset? :) For Long Drive it doesn't even take a long for me to find similar problem — only difference of task Tree from SEERC 2012 is that you have to output all values instead of their average.

For me this issue haven't changed final place in standings, but for someone who spend a lot of time on Chapu and Matisee during late part of contest and was close to finishing it (and i would say that this problem looks like hardest/most boring to code/taking most time among given problemset) deleting problem from a contest can possibly affect final rank in a very sad way.

Sorry if there were really solid reasons to remove a problem, and I simply can't understand them, but i've participated in a lot of different online contests and this was really strange for me. I can hardly imagine that we'll see announcement 80 minutes passed from contest start, and we found out that div1 E is very similar to one of problems from Livearchive and even can be solved with same code, we decided to delete it from this round during CodeForces contest :)