http://www.codeforces.com/blog/entry/1197. Does anyone know how it works? Competitors are mostly Indians. (not in production) Tensorflow 3.11. I think it's not too difficult because there is much problems which cannot be given in CF-style contests(for example, the problems to the fact the "stuff" into time limit). I Enjoy both Topcoder and Codeforces but this point goes to Topcoder. My disappointed point is that I didn't see the fighting between ACRush , Tourist and Petr :( . If your predictions are correct then we need another strategy hehe. Codeforces have more problems, some of them are really challenging. You can get the best discount of up to 50% off. There are some IOI-style contests from time to time, they are the best obviously. Obviously I might not be the best judge of the problem quality. I still prefer the TC challenges than the Hacks here, exactly because as other people said it's not fair to some people have the lucky of getting hacked and correct their solutions. Please correct me if you find anything wrong. Recent topcoder failure was not because of number of participants. I have never seen TopCoder handling 2200 participants, and you are saying they can handle it easily! Jupyter (for running notebooks) 3.9. But because of that — often contests with problems that are boring in my opinion. Typical medium/hard problem from AtCoder requires much more thinking and less code than typical medium/hard problems from other sites, so if someone's goal is to have fun by solving problems requiring thinking then it is the best site. For all other platforms, the issue is that problems are often standard or boring. XGBoost 3.6. I think 2017-2018 season is unbeatable, at least for plat. I didn't get you. Competitive programming sites and interview preparation sites have a lot in common, but they aren’t interchangeable: Is TopCoder the best place to practice coding interview questions? (not in production) requests My advice on practice to become a red coder at Codeforces, TopCoder and AtCoder. I'm glad others share my frustrations with TopCoder. Like many of my friends, I started to really participate in online rounds since 2018, and Topcoder's fame already seemed to fade. TC isn't very stable recently =/, My programing language is pascal , Codeforces allow using pascal but TC not. And BTW, I like TopCoder challenges much more than Coderforces challenges. Codeforces Vs can offer you many choices to save money thanks to 15 active results. Isn't that true? Menu. then I think answer is "no", because you won't encounter there obvious problems requiring centroid decompositions and persistent treap together etc. Codechef — The reason that most of the good competitors don’t compete on Codechef is quite obvious (I think). And TopCoder's website is super counterintuitive. bciobanu and myself. Please conduct more short contests on CSA. The Application of Lagrange Interpolation in Mathematics. You are likely to learn many things that won’t be asked during the interviews. Solving any of the problems in the practice arena is difficult unless you already have knowledge of various algorithms. I also recommend USACO problems. Visualize, analyze and compare codeforces user profiles. They are too mathy. Still, I think TopCoder can handle 2200 participants easily but Codeforces seems to have problem to handle it. AlexErofeev Then there is a possibility to write different things in different languages. :D. I love TC and I love CF. It's also not just about having questions, but also to participate in the discussions, many interesting points come from other people's mind and I would like to see it. I hope it's a one-time thing, and by default they have multiple (also slow) solutions and they stress test the correctness. (Lot of people participating on atcoder and codechef are Japanese and Indians respectively. Among the platforms, CF, CSAcademy and Codechef should be fine. Python 2.7 2. I think CFs is getting more stable but still behind TC. Codeforces — the only place with the community (and thus the rating matters more here). (not in production) Keras 3.10. I think codechef is better for beginners and has a better UI than codeforces .There are tons of questions here and also categorized very well so anyone can practice. Freelancing. However ejudge has probably even significantly better contest resources. In the initial revision of this post back in 2014, this particular website was somehow left out, but thanks to the nice community members in comments, we’ve now got an additional, and great, programming challenge site to add to our list. ", Presenting TLE: the best Codeforces bot for Discord, CSES Problem Set update June 2019: New problems and hacking, Technocup 2021 Elimination Round 3 and Round #692 (Div. Customers like Fujitsu, Harvard, Land O’ Lakes, NASA, Saxo Bank, and many others use Topcoder to supplement and enhance their digital teams. Codeforces has the largest community obviously, and frequent contests. (answer) I’m doing most of my writing on Quora this year. In that site, beside the team's name, there are the TC handles of the team's members. 4- I like Codeforces problems quality and difficulty levels more than TopCoder. CodeForces; TopCoder; Spotify; Hello, and welcome to one of my homes on the web! 1. NASA Tournament Lab; Events; Statistics. E.g. Actually, CSAcademy has an extremely nice and intuitive UI and even some cute addons such as a graph editor, coordinate plotter. USACO problems, particularly older ones by only a few years, are not the best as far as OI goes, at least on average, though there are def some nice gems. While in TopCoder SRM can create an extra account. I always assumed that the host country is somehow responsible for the selection of the tasks. Congrats to CF team. This is one in a series of articles describing the research, writing, and tool creation process. After correctly setting it up you will realize other challenges are so miniscule compared to this. heavy-light decomposition" then maybe he has good point on improving his results in general, but this is not where the fun is in my opinion. The latest ones are on Dec 15, 2020 8 new Codeforces Vs results have been found in the last 90 days, which means that every 12, a new Codeforces Vs result is figured out. Funny enough, I changed today to the Russian language and I noticed that some guys replied the same question I did to other guy in english but didn't set up the language correctly, so it was only being displayed in the Russian interface. The bronze/silver/gold levels are a great way to learn new topics if you are just beginning, and I have found the platinum problems challenging and interesting. Interface looks a little clumsy at first but is actually good once you get used to it. If you have some questions - ask. Use our talent for just one part or for the entire product creation. The problems on Project Euler suffer from the same flaw. The biggest set of problem setters and thus the biggest variety of problems (I think). For Hackerearth, I will say this site helped me learn some data structures even though it's not really geared towards contests, as they often have tutorials and some straightforward implementation problems to help you practice what you just learned. If you can find the topcoder arena that is an accomplishment in itself. Codeforces is all about daily/weekly challenges. I believe that they can add new features:). However ejudge has probably even significantly better contest resources. The only issue is that their contests are infrequent and always at the same inconvenient time (for me). I can't imagine doing CP and not visiting Codeforces regularly. codeforces vs leetcode. In topcoder I like separation of challenge phase and coding phase. For beginners, Topcoder is not so nice, because especially in division one, one stupid mistake can make you fall down quite quickly. We have the specialized UI designers, developers and testers you need to create and deploy an amazing digital experience. I thought there is some committee. @ahmed.. dude when are u going to update ur tool for this codejam.. You are definately right about the first point. Hackerrank, Hackerearth won’t be considered because they are not particularly trying to build contest platforms but rather focus more on getting people jobs, etc. However Codeforces has by far the best website, there is community here which is nonexistent elsewhere (because of blogs) and great contest resources in gym. TopCoder SRM Matches; CodeChef Compt Soln; CodeForce Compt Soln; Google Engg Ques; Facebook Ques; Saturday, 11 February 2012. For me, it would be exellent if codeforces added to the tab "ACM-style contest", and sometimes given to ACM-style contest. Programming competitions and contests, programming community. Petya loves lucky numbers very much. TopCoder Rating means a lot to me rather the Codeforces.. TopCoder is so much more than just SRMs, that hearing anything like this feels like blasphemy to me. You already have to know the algorithms to solve the problems in a reasonable time frame. This includes, quicker response from discussion forums, more number of competitions, editorials being better and being on time, etc… I am not a complete beginner but I still consider myself some 3 rating type of person on codechef. TC's editorial is much more comprehensive. Codeforces is improved constantly (e.g. Egor Having an ability to choose a language for reading/writing comments would lead to language-specific threads (for good or bad). One minor issue is that at least last time I checked, you have to copy-paste your code in, not just upload a file. [Beta] Harwest — Git wrap your submissions this Christmas! Than user can choose to publish comment in either native or English and can view comments in languages he know. Codeforces. However I like TopCoder challenges more than Codeforces hacks. To read the whole series, see my CPFAQ category page. Awesome Competitive Programming . Codeforces/CSAcademy I don't participate in contests on other websites. On one hand, Codeforces is a social network dedicated to programming and programming contests. So I prefer CodeForces :x. Actually I change my mind about the first sentence, most OI (and cf too) have increased on average quality quite a bit recentishly. the last CEOI: http://codeforces.com/blog/entry/52986. Or perhaps, if conditions are right, it could potentially become a full-time job. Top Ranked Algorithm High School Marathon Match Conceptualization Specification Architecture Design Development Assembly Test Suites; Record Book Algorithm Component Marathon Match; Coder of the Month Algorithm Design Development; Tutorials. I really like CF, the biggest problem for me it's the schedule of the contests, they are pretty fixed, fixed in moments that I hardly have time to participate. The number of implementation problems is increasing and idea — based problems seem to be lost. AtCoder — by far the best problems 2. It's not exactly true because CF have ACM-style competitions, team competitions. I still recommend competing if you see a good problem setter. And I think many people feel the same way when seeing Russian comments. I know it's much more comfortable to speak in the home language, but It's very annoying to see like 80 comments in the Russian version, possibly containing interesting things and solutions in contrast to 4-5 in English. The new discount codes are constantly updated on Couponxoo. Frequent contests and unfortunately quite frequent issues with the judge. I’m working on a project this year to build a competitive programming FAQ. Still def worth someone's time tho. Aren't ioi-style problems considered to be more mathy? Eg. If you forbid russian comments you will get probably abount 10% of that comments posted in English (and other just not posted) and about -30% to number of users ;), But it would be nice for user to specify his native language and know languages. CodeForces. 'sorted(set(s))' in Python gets me a TLE. 'sorted(set(s))' in Python gets me a TLE! Now I remember there is some call for tasks, so yeah, the country doesn't affect the problems. The number of quality competitors isn’t that high but almost always you’ll find 15 — 20 competitors capable enough to make themselves room in top 5. That's at least my impression, I haven't competed in any of those for a while. "Competitors are mostly Indians and the judge performs very poorly." Codeforces. But, In Codeforces Contests can't cheat. Programming competitions and contests, programming community. 3- Codeforces now makes much more contests than TopCoder. And if people from Japan will prepare problems, it means one should solve old Japanese national olympiads, that's for sure. Of course we are comparing TopCoder Algorithm section. This is where you get to compete with the best competitors from all over the world. I have corrected it in the comment. I also agree the site is stable, especially recently, despite the increased number of participants. Hi r/leetcode.I am an ex-Google software engineer, and I wrote down almost everything I know about interview preparation, and launched a small website. 1 + Div. Every single proof of every problem needed is found there even if the problem is simple enough. The only programming contests Web 2.0 platform, But, In Codeforces Contests can't cheat. I also learnt most important techniques through USACO problems. Maybe an option to choose whether user wants to translate his comment without assistance or he wants site to translate it using google would do? Codeforces : Problems are of very good quality ( learnt many new concepts , Editorials are awesome, Hackings, Competitions ..), Topcoder : Learnt different varieties of problems on single concept. It would be great if CF has forums properly structured. TopCoder can handle 2200 participants pretty easily I believe. Topcoder is really the best when it comes to problem ideas but I agree it's UI is very bad. Sometimes I don't know if I should solve problems or read others codes. I like to use the site code-drills.com to recommend problems, which only works with codeforces. Codeforces GYM is quite helpful training resource for teams. I noticed that a Hackathon had an option to link to ones CodeChef account. Maybe I have this feeling because CF hosts more contests than other platforms, it's hard to say. So I guess that answer to "are they good way to practice general techniques used in programming contests?" Created with a view to connecting people to information, this list below contains a complete collection of all the fantastic resources I've collected over the course of my 11-year competitive programming career. topcoder Networks. There is no way to interact with the community but most of the after — contest discussions (no matter what online judge) are carried out on Codeforces anyway. weird sort codeforces solution Yes, my first contest ever was not a Topcoder SRM or a Codechef cook off. [Beta] Harwest — Git wrap your submissions this Christmas! Note that packages marked as "not in production" means that while these models were used during the project, they are not present in the final codecoach.fun website. Is the country responsible for preparing problems? There are many things to learn here, many people eager to join and write qualitative problems. And TopCoder's website is super counterintuitive. Codeforces Vs Overview. The topics are close to atcoder, a bit forces by the input size limitation. Lucky Conversion . 1. For Atcoder, I have not participated in many contests, but the problems I have seen have been excellent quality. I know that codeforces team are working on new ideas every day. A very big effort is exerted in it. TopCoder 3./4. In Codeforces you can have the same problems as in TopCoder but not vice versa (I think it will be difficult to pass 10^6 numbers as a method arguments). Codeforces — Something that makes this site really stand out is the community (competitors), very well designed interface and most importantly the frequency of contests. The site interface is clean. Topcoder — Let’s not talk about interface and usability and absurdness for a while :P The div 1 500 problems are mostly beautifully written. But we hope that you'll enjoy our contest in the future as well! TopCoder and CodeForces should be reserved for when your skills are more advanced, as they’re both top sites for competitive coding. Possibly I'm not clever enough but participating in SRM is indeed much complicated than participating a Codeforces Round. 1, Div. 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). Thanks for reply. Flask 3.7. psycopg2 3.8. But it's unrated. Hey, I've been lurking this subreddit lately and have been learning a lot. The past few years have had higher consistent quality tho. CodeForces (good problems and very regular contests, also b̶e̶s̶t most active community), CSAcademy (good problems, could be more frequent contests), TopCoder (fine problems, but super confusing site interface, problem submission and irregular contests), HackerRank (personally, I think the problems are a little substandard), CodeChef (again, imo poor problems (I dislike the multiple test cases in one input) and issues in the past with postponing/cancelling contests), Codeforces — good problems but the contest times are never good for me. December 11, 2020 December 11, 2020 Uncategorized Leave a comment December 11, 2020 Uncategorized Leave a comment > I like Codeforces hacking more than TopCoder challenges.I definitely prefer TopCoder challenges rather than Codeforces hacks. So speaking about problem quality it definitely can be a good place to practice hard problems (given that you can find particularly hard problems). Need help on How to change my USER NAME in codeforces. What do you drink or eat during a contest? Server time: Nov/18/2020 03:00:30 (g1). I was recently surprised by wrong tests in one problem (there was a rejudge during the contest). Well, any decision should not make the community worse. (not in production) eli5 3.13. 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). Contests are quite rare, at least the main ones (AGC). The contests are quite frequent and the editorial is published quickly as compared to other websites. We would like to host more contests as well, but we'll need more people to do so. Topcoder vs CodeChef vs Codeforces vs Project Euler etc. Sometimes the judge performs poorly. But CF is slightly winning so far. Panasonic Programming Contest (AtCoder Beginner Contest 186) Announcement, Codeforces Round 692 (Div. SGU online judge and Timus online judge are specifically known for their problem quality so you can practice there if you want quality problems. I have a PhD in Computer Science from the University of Cambridge (Trinity College), obtained under the supervision of Pietro Liò. You can also see wins and tenure with Topcoder. Python packages: 3.1. numpy 3.2. scipy 3.3. pandas 3.4. sklearn 3.5. And also I like the match summary very much. I can't speak much about the quality of their problems, because their site was almost unusable for me. 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. Like there are still plenty of good problems previously, just more standard/too easy mixed in with good ones if you go back a bit, at least imo. A huge amount of your nerve cells die every time when you wait for a rating update on Codeforces. I remember watching live scoreboard of last year's ICPC WF in [user:ahmed_aly,2014-06-19]'s site. 2) Editorial, Invitation to CodeChef December Cook-Off 2020. A curated list of awesome Competitive Programming, Algorithm and Data Structure resources.. The Application of Lagrange Interpolation in Mathematics. What do you drink or eat during a contest? Programming competitions and contests, programming community. TopCoder algorithm contests are a way to develop your coding speed. Codeforces Visualizer. I don't see why everyone can't make an effort to speak in english like in TC's forum, which works very fine. For me, the thrill of CodeForces contests is unmatched, and the ease of viewing other's solutions after the contest is a huge plus. Csacademy — A relatively new contest platform, problems are good but the frequency of contest is just too low as compared to other judges. CSAcademy is better than CodeForces except that it has less users. It took a long time to even load a single problem, the ui is very poorly designed imo (very small vertical space to write code), and I disliked how they wanted you to write your solution (seems more geared toward Java users). But usually its a good idea to skim through others solutions - lost 6-7 minutes worth 100-200 challenge points. I also appreciate more time and more tasks in Codeforces than in TopCoder. I like the combination of hacking and coding, on the contrary. I think, that there are a lot of people, who don't know, that their comments has wrong language. Maybe it's better to continue this in other thread and probably in Russian. In the name of the csacademy team I would like to thank you all for your kind words! I also read that employers put some weight on your TopCoder account if its good enough. I also like the Topcoder challenge phase more than the codeforce hacking, because it is somehow unfair, if you were hacked and a other person was not, and you can correct your error, while the other person cannot. Topcoder is fine once you are familiar with the arena. One thing that bothers me is the option of comments in Russian. Polygon. If someone likes to say "this is a programming contest, not an algorithmic one" or "I don't get why people don't learn SSE these days which is more useful than e.g. Compare max/min rating, number of contests participated, max positive rating change, max negative rating change, best position in contest, worst position in contest, number of total solved problem, levels of solved problems, category or tags of solved problems and many more. r/cscareerquestions - Topcoder vs CodeChef vs Codeforces vs Project Euler etc. Arguments against topcoder is that the interface is difficult, but navigating difficult algorithmic problem is just like navigating the difficult interface anyways. Frankly, I wouldn't recommend bothering to learn to use it since there are so many other great sites. Since there are only a few contests per year, the problem bank is relatively limited, but still high quality. How are the two statements related? , if conditions are right, it 's in Japan this year [ … ] Menu (! 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