1- Codeforces contests now are more stable than TopCoder contests, there were about 2200 registrants today (not all of them participated) and the contest ran smoothly (at least for me).
2- I like Codeforces contest format more than TopCoder contest format, the contest contains more problems and more time, and I like Codeforces hacking more than TopCoder challenges.
3- Codeforces now makes much more contests than TopCoder.
4- I like Codeforces problems quality and difficulty levels more than TopCoder.
Now Codeforces is number 1 for me and TopCoder is number 2, I love Codeforces.
2- I like Codeforces contest format more than TopCoder contest format, the contest contains more problems and more time, and I like Codeforces hacking more than TopCoder challenges.
3- Codeforces now makes much more contests than TopCoder.
4- I like Codeforces problems quality and difficulty levels more than TopCoder.
Now Codeforces is number 1 for me and TopCoder is number 2, I love Codeforces.
Recent topcoder failure was not because of number of participants. TopCoder can handle 2200 participants pretty easily I believe.
> I like Codeforces hacking more than TopCoder challenges.
I definitely prefer TopCoder challenges rather than Codeforces hacks.
I like the combination of hacking and coding, on the contrary. If you can't solve the next problem, you can attempt hacks on those you've already solved, rather than wait for the next phase.
But I really like the Topcoder Educational Forum.
I like TopCoder challenges more than Codeforces hacks, because some people that can and like to solve problems, may solve 5 problems with no challanges and lose to someone who solve 4 problems and 30 challenges. In TopCoder good solvers can solve all tasks during Coding Phase and make challenges during Challenge Phase.
i guess it does not include 2011's round...
As for the challenges I also will go with Topcoder: I prefer the separation of the phases that exists there.
The best thing, however, is that we have those two wonderful sites, with twice as many problems to solve and contests much more frequent than what they used to be. :)
AlexErofeev Then there is a possibility to write different things in different languages.
Egor Having an ability to choose a language for reading/writing comments would lead to language-specific threads (for good or bad).
Overall, I'd prefer English-only comments. E.g. I feel sad when I see Chinese comments (especially with a lot of "+" — clearly there is something clever/funny, but I just can't read it). And I think many people feel the same way when seeing Russian comments.
Or at least an opportunity to change quick the language of a comment (in the case of mistake).
Example.
The best example is after few hours, the maximum number of participants for TCO qualification round 1 is 2000.
And i think TopCoder challenge phase is more interesting... rather then viewing solutions in the contest time & also searching for others submissions wasting some valuable time. As we have seen in the Codeforces Beta Round #72 (Div. 2 Only) contest the second place gainer can't solve the 4th problem as he was waiting for others submission during contest time.
I thought you said that you like codeforces more than topcoder, and in the Facebook question you answered you prefer topcoder :D
My answer was Codeforces, then I changed it.
=(
Your inglish sucks
1) Codeforces gives us 4-6 rounds per month while Topcoder - only 3.
2) Codeforces rounds consist of 5 problems. It's better than 3 problems on Topcoder.
3) Topcoder has very specific technical environment: it cannot gives us big inputs (for example, array of 100000 elements). So, I think, some kinds of problems are never presented on Topcoder.
4) I don't like Arena. What is it for? It's full-of-problems and slow Java applet.
5) When I solve Codeforces problem, I open my favourite IDE and write a program.But if you want to solve Topcoder problems in a comfortable way, you should use plugins for IDE or Arena.
And I don't see even little advantage of Topcoder.
as usual, sorry for bad english
7) CF более демократичный
8) сайт разивается (по крайней мере, быстрее TC)
Codeforces looks much more pleasant and it's really easier on the eye than dark(color :D) topcoder.
And here you can solve your problems on Pascal(kind of advantage IMHO)
I'll not argue about what color is better white or black.. But I should noticed, in my opinion some arguments aren't so truely.
I agree, that number of contests on Codeforces is larger, but I'm sure, that number of offered problems to Topcoder is materially greater. So even without counting individually cases, I can conclude, that quality of the tasks on Topcoder is higher.
I'll not explain what the arena advantages are, but if arena is so bad, was it hard to not write fully new applet with huge possibilities instead of using almost ordinary judge system?
If you need to see some Topcoder advantages, so there are stable ranking system and existance of other programming contests apart algorithm.
I think yahooo's post seems ridiculous even without my words.
Sorry for English and thank you for reading.
TC's editorial is much more comprehensive.
Yeah , I like Topcoder's editorials very much. A very big effort is exerted in it. Every single proof of every problem needed is found there even if the problem is simple enough. Images are used to explain more. And also I like the match summary very much. I think Codeforces should hire some people to write the editorial of every round not necessarily the writer of the contest so that at the end we have a good library for every problem on codeforces. I Enjoy both Topcoder and Codeforces but this point goes to Topcoder.