Will there be Distributed Code Jam in 2020?
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This post on Codeforces: https://codeforces.com/blog/entry/66578
Hi,
I want to discuss interactive problems in Code Jam. Code Jam didn't have
interactive problems until recently, and there are still major differences
between interactive problems in Code Jam versus the other competitions where
Hi,
I'd like to share some problems with the new UI that I found during the
qualification round and the round 1A:
1. The panel with questions and answers is too narrow. During the qualification
round, an answer that was posted for everyone included an URL that was not
displayed properly becaus
Hi,
Why can't those who have advanced to Round 2 participate in sub-rounds 1B and
1C at all? I think that it would be better if they could participate
unofficially (this is like participating normally, except that their results
are not considered when determining who advances to Round 2).
Do y
> Publishing the new system and UI before competitive rounds is exactly what
> we did, so people could practice on them before the actual rounds. That's
> how we are discussing these several weeks before Code Jam's first round. I
> haven't checked every one, but I'm pretty sure most, if not all, of
There were no response from Code Jam admins, but the errors are now fixed.
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Hi!
While reading Code Jam FAQ, I found some errors:
> Be aware of common problems like integer overflow and stack overflow that can
> cause an otherwise correct solution to fail.
The link from "stack overflow" is pointing to a Wikipedia page on integer
overflow.
> In an output file, if the corr
Hi Pablo,
I favor the idea to make a better competition platform. I'm concerned a little
that major changes are made without any public announcement and discussion; I'd
like Code Jam team to publish information about new and upcoming changes, so
that it would be possible to learn about them bef
This post on Codeforces: https://codeforces.com/blog/entry/65800
Hi all! This year, Google has again decided to change Code Jam user interface.
The new interface has already been used for Code Jam to I/O for Women and Kick
Start rounds, and from what I saw, it is even worse than the last year. L
Hi! One of the features the new Code Jam platform is missing is the ability to
ask questions during rounds. So far, the way to ask questions was by emailing
code...@google.com. Given that using email will probably not be permitted
during the final round, how do we ask questions then?
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You re
I'm not the OP, but still...
> But before you start frantically coding a better sort method, let me ask you:
> why didn't you simply use Arrays.sort from the standard library? It's
> available, it's correct and it's very fast.
When sorting arrays of primitive types, Arrays.sort uses Quicksort, w
On Friday, 27 April 2018 23:39:01 UTC+3, Pablo Heiber wrote:
> Practicing in a different way than how you compete is bound to cause you
> trouble. If you resort to seeing the input data when you don't know why
> something is not working well, you are going to be unprepared when that
> happens i
On Monday, 23 April 2018 18:04:11 UTC+3, Pablo Heiber wrote:
> $ echo "int main() { throw; }" > test.cpp && g++ test.cpp && ./test; echo $?
> terminate called without an active exception
> Aborted
> 134
In this case, the program didn't exit with nonzero exit code. In fact, it
terminated with SIG
What is the purpose of having two distinct modes at all? In the old system,
there was no such distinction.
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On Friday, 6 April 2018 22:33:40 UTC+3, Pablo Heiber wrote:
> Thanks for the feedback. There was indeed a bug causing this, but we thought
> we fixed it, and some users reporting similar issues confirmed it was fixed
> for them. Is this still happening if you see your submissions now after
> re
During the practice round, I submitted two solutions to the problem Number
Guessing. The first one failed because I didn't select the language, while the
second one was correct. According to the scoreboard, it passed both test sets,
but in the list of submissions, it is shown that it only passed
On the old GCJ website, it is possible to practice on old problems at any time,
even without logging in. Will this be possible with the new system?
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Will there be an option to test my code on Code Jam server without submitting
an actual solution, similarly to Testrun problem in DCJ? Most online judges
permit this so that you can know how fast the server is.
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When solving problems in Java, Code Jam now requires the main class to be named
Solution. Yet in many other online judges, there is no such limitation. Is it
possible to remove it for Code Jam as well?
It is very inconvenient if main classes for all problems are required to have
the same name.
A few weeks ago, I participated in Google Code Jam and Distributed Code Jam
finals. Later, the finalists were asked to provide some feedback. I think that
my feedback may be interesting for other people as well, so I post it here (I
also posted it on Codeforces: http://codeforces.com/blog/entry/
There is an error in the analysis of problem A: "Otherwise, it must have at
least one 1 not at the start of the googlement, so it will decay into a
googlement with the same digit sum but with at least one digit other than 0 or
1". This is not true. For example, googlement 010 decays into 100, wh
A better idea is to insert sample test cases at random places within a test,
then reject the submission if the answers for these cases are incorrect. This
makes it pretty much impossible to submit a wrong output file by mistake.
This is what Hacker Cup seems to be doing, very good thing to preve
Hi all,
Recently, Google announced the dates for the next Code Jam, as well as the
location of its onsite rounds. I'm disappointed. They've chosen a location
where GCJ onsite round was already held before. Again. Come on! Google has more
than 70 offices (source: Google), enough to have each GCJ
When looking through past problems, I found that the analysis for 2015 Code Jam
finals has yet to be published. It would be a good thing to do, as the finals'
problems are pretty difficult and most people won't be able to solve them on
their own.
Having analyses published for both this year's r
> I thought I'd start a thread with the aim to cover all questions of round 3.
There is already one: http://codeforces.com/blog/entry/45358
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Hi,
1. On the Code Jam Finals website, and also in the Terms and Conditions, it is
said that during the Finals, the contestants are only permitted to use
Google-provided equipment. A list of preinstalled software is also provided,
but the versions are rather old. So, the question: what options,
Each program must contain at least one instruction.
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In the previous DCJ Practice Round, there were all problems from prior DCJ
rounds except one: Testrun. Testrun problem is very helpful because it allows
to measure the time it takes to do something on the server without having to
solve anything. While a fairly similar result may be achieved duri
In a solution to a contest problem, it may be even better to do
auto M = new long long[N];
or even declare a global array of fixed size. Of course, both methods are not
suitable for real-world programs. Also, the latter approach tends to fail on
Windows, probably because it lacks support for
Hi,
I want to suggest certain improvements to Distributed Code Jam website and
system. I already reported that unregistered users can't download sample inputs
during the rounds (and for a short period afterwards), but this is not all.
1. I noticed that Distributed FAQ page now states the exact
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