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. Among the platforms, CF, CSAcademy and Codechef should be fine. TC's editorial is much more comprehensive. Good time zone for Europe. https://www.guru99.com/competitive-programming-topcoder.html Frankly, I wouldn't recommend bothering to learn to use it since there are so many other great sites. It depends on what you are aiming for. The Application of Lagrange Interpolation in Mathematics. The only programming contests Web 2.0 platform. Egor Having an ability to choose a language for reading/writing comments would lead to language-specific threads (for good or bad). 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? bciobanu and myself. I have a PhD in Computer Science from the University of Cambridge (Trinity College), obtained under the supervision of Pietro Liò. Need help on How to change my USER NAME in codeforces. [Beta] Harwest — Git wrap your submissions this Christmas! 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. The number of implementation problems is increasing and idea — based problems seem to be lost. 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. The only programming contests Web 2.0 platform, But, In Codeforces Contests can't cheat. For Atcoder, I have not participated in many contests, but the problems I have seen have been excellent quality. Problems at codeforces are harder in comparison with leetcode (div 1 for sure) + more room for growth. 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. Polygon. Atcoder — superb quality of problems that require thinking more than implementing. Still def worth someone's time tho. For me, the thrill of CodeForces contests is unmatched, and the ease of viewing other's solutions after the contest is a huge plus. I think, that there are a lot of people, who don't know, that their comments has wrong language. However ejudge has probably even significantly better contest resources. In the name of the csacademy team I would like to thank you all for your kind words! 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). Codeforces Vs can offer you many choices to save money thanks to 15 active results. 4- I like Codeforces problems quality and difficulty levels more than TopCoder. > I like Codeforces hacking more than TopCoder challenges.I definitely prefer TopCoder challenges rather than Codeforces hacks. 1, Div. In topcoder I like separation of challenge phase and coding phase. codeforces vs leetcode. 1) A. 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). This last round was an example, delayed start and low responses some times. On September 20, 2008, Petr Mitrichev took part in a Topcoder Spotlight Session where he answered […] where I waited a long time without answer. It allows you to Hide/Show problems' tags in an easier way (i.e. Competitors are mostly Indians. If your predictions are correct then we need another strategy hehe. I have never seen TopCoder handling 2200 participants, and you are saying they can handle it easily! I can't imagine doing CP and not visiting Codeforces regularly. Possibly I'm not clever enough but participating in SRM is indeed much complicated than participating a Codeforces Round. Maybe I have this feeling because CF hosts more contests than other platforms, it's hard to say. Thanks for reply. Codeforces Vs Overview. There are many things to learn here, many people eager to join and write qualitative problems. Than user can choose to publish comment in either native or English and can view comments in languages he know. NASA Tournament Lab; Events; Statistics. This is one in a series of articles describing the research, writing, and tool creation process. And TopCoder's website is super counterintuitive. Images are used to explain more. For all other platforms, the issue is that problems are often standard or boring. I didn't get you. thesilentnoise October 4, 2016, 10:19am #6. APPS . Yeah , I like Topcoder's editorials very much. Codeforces is all about daily/weekly challenges. Server time: Nov/18/2020 03:00:30 (g1). 1 hour contests (Makes you think faster, Code faster, More Competitive ). 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. I like the combination of hacking and coding, on the contrary. 1) Codeforces Round #104 (Div. I also recommend USACO problems. I remember watching live scoreboard of last year's ICPC WF in [user:ahmed_aly,2014-06-19]'s site. This is where you get to compete with the best competitors from all over the world. Every single proof of every problem needed is found there even if the problem is simple enough. Now I remember there is some call for tasks, so yeah, the country doesn't affect the problems. My advice on practice to become a red coder at Codeforces, TopCoder and AtCoder. My target : Being red in TopCoder (or Codeforces also OK) before ACM-ICPC World Finals 2014. 1 + Div. Flask 3.7. psycopg2 3.8. Sometimes I don't know if I should solve problems or read others codes. Petya loves lucky numbers very much. In that site, beside the team's name, there are the TC handles of the team's members. Interface looks a little clumsy at first but is actually good once you get used to it. You already have to know the algorithms to solve the problems in a reasonable time frame. I don't think that Codeforces is much better than Topcoder, so i'm going to argue. The past few years have had higher consistent quality tho. You can also see wins and tenure with Topcoder. I'm glad others share my frustrations with TopCoder. 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. One minor issue is that at least last time I checked, you have to copy-paste your code in, not just upload a file. E.g. 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. 21 votes and 8 comments so far on Reddit. the last CEOI: http://codeforces.com/blog/entry/52986. I like to use the site code-drills.com to recommend problems, which only works with codeforces. The new discount codes are constantly updated on Couponxoo. 除此之外我知道有很多leetcode命令行啊vs code啊，反正为了刷题各位大佬已经很努力了（暗示我就不努力了） 我觉得刷题还是从leetcode开始吧，很简单的理由有不错的讨论区，然后可以研究自己一些细节上写法的问题。毕竟刷codeforces之类肯定不会注重具体实现了。 Freelancing. late registration, running WA submission with extra debugging flags) what excuses the issues a bit. Frequent contests and unfortunately quite frequent issues with the judge. TopCoder can handle 2200 participants pretty easily I believe. But CF is slightly winning so far. Desktop version, switch to mobile version. Codeforces. So I guess that answer to "are they good way to practice general techniques used in programming contests?" It would be great if CF has forums properly structured. Need help on How to change my USER NAME in codeforces. The biggest set of problem setters and thus the biggest variety of problems (I think). Codechef — The reason that most of the good competitors don’t compete on Codechef is quite obvious (I think). 1 + Div. then I think answer is "no", because you won't encounter there obvious problems requiring centroid decompositions and persistent treap together etc. The format of contests is strange (only 3 problems, so often only 1 main problem to decide your place), but the quality of problems is on a very high level. That's at least my impression, I haven't competed in any of those for a while. Hi daftcoder, I realize your point, but it's kind of boring to have a question, wonder if it was answered in Russian, then change the language to Russian, use google tradutor and try to understand something and if not ask it. 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. And I'd like to see a list of all problems with upsolved ones being marked green or sth. 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. 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 SRM Matches; CodeChef Compt Soln; CodeForce Compt Soln; Google Engg Ques; Facebook Ques; Saturday, 11 February 2012. 3- Codeforces now makes much more contests than TopCoder. Isn't that true? 1. December 11, 2020 December 11, 2020 Uncategorized Leave a comment December 11, 2020 Uncategorized Leave a comment It's not exactly true because CF have ACM-style competitions, team competitions. 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). And also I like the match summary very much. 'sorted(set(s))' in Python gets me a TLE! 2) Editorial, Invitation to CodeChef December Cook-Off 2020. Hopefully it will help somebody to better prepare for the interviews at places like Google, Facebook, Amazon, and others: weird sort codeforces solution Yes, my first contest ever was not a Topcoder SRM or a Codechef cook off. The topics are close to atcoder, a bit forces by the input size limitation. 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. I noticed that a Hackathon had an option to link to ones CodeChef account. Atcoder — Despite of a lot of contests the problem quality of atcoder doesn’t even seem to flinch a little. 'sorted(set(s))' in Python gets me a TLE. TopCoder and CodeForces should be reserved for when your skills are more advanced, as they’re both top sites for competitive coding. Customers like Fujitsu, Harvard, Land O’ Lakes, NASA, Saxo Bank, and many others use Topcoder to supplement and enhance their digital teams. GYM. 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. You can get the best discount of up to 50% off. Is the country responsible for preparing problems? And BTW, I like TopCoder challenges much more than Coderforces challenges. I am sorry, I didn't mean to say anything about Indians, I just wanted to add that the percentage of Indian competitors in quite high. Topcoder is really the best when it comes to problem ideas but I agree it's UI is very bad. But usually its a good idea to skim through others solutions - lost 6-7 minutes worth 100-200 challenge points. Gennady Korotkevich (Belarusian: Генадзь Караткевіч, Hienadź Karatkievič, Russian: Геннадий Короткевич; born 25 September 1994) is a Belarusian competitive programmer who has won major international competitions since the age of 11, as well as numerous national competitions. XGBoost 3.6. I also learnt most important techniques through USACO problems. To read the whole series, see my CPFAQ category page. Isn't Atcoder a good place to train for IOI because it's in Japan this year? But, In Codeforces Contests can't cheat. The problems on Project Euler suffer from the same flaw. AtCoder — by far the best problems 2. r/cscareerquestions - Topcoder vs CodeChef vs Codeforces vs Project Euler etc. Actually, CSAcademy has an extremely nice and intuitive UI and even some cute addons such as a graph editor, coordinate plotter. I can't speak much about the quality of their problems, because their site was almost unusable for me. I’m working on a project this year to build a competitive programming FAQ. Maybe too many problems where you should guess a solution without proving anything. Congrats to CF team. Lucky Conversion . 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. What do you drink or eat during a contest? Eg. Some 250 pointers seem quite tricky and not — so — straightforward as well. It would be interesting to have a small checking function to avoid this human error. Codeforces GYM is quite helpful training resource for teams. The site interface is clean. topcoder open semifinals - Egor (10 minutes delay) (not in production) eli5 3.13. Freelancing is a great way of making some side income while still holding down your day job. I also appreciate more time and more tasks in Codeforces than in TopCoder. Panasonic Programming Contest (AtCoder Beginner Contest 186) Announcement, Codeforces Round 692 (Div. I have corrected it in the comment. Please correct me if you find anything wrong. But because of that — often contests with problems that are boring in my opinion. Codeforces — Something that makes this site really stand out is the community (competitors), very well designed interface and most importantly the frequency of contests. Csacademy — A relatively new contest platform, problems are good but the frequency of contest is just too low as compared to other judges. As much as I like tree and dp, those topics are a bit over saturated too. Last year, I did attempt to participate in a SRM, but I met various difficulties. http://www.codeforces.com/blog/entry/1197. I still recommend competing if you see a good problem setter. I also agree the site is stable, especially recently, despite the increased number of participants. How are the two statements related? I thought there is some committee. Awesome Competitive Programming . On one hand, Codeforces is a social network dedicated to programming and programming contests. If you prepare for IOI, don't focus on atcoder or topcoder. This makes me feel more as a visitor than a member. Topcoder — Let’s not talk about interface and usability and absurdness for a while :P The div 1 500 problems are mostly beautifully written. My intention is to generate more comments using everyone's potential, not to take out the russian participation. Programming competitions and contests, programming community. Programming competitions and contests, programming community. I think CFs is getting more stable but still behind TC. Actually I change my mind about the first sentence, most OI (and cf too) have increased on average quality quite a bit recentishly. For beginners, Topcoder is not so nice, because especially in division one, one stupid mistake can make you fall down quite quickly. Regarding quality of problems in my opinion: 0. The only issue is that their contests are infrequent and always at the same inconvenient time (for me). Contests are quite rare, at least the main ones (AGC). Programming competitions and contests, programming community. "Competitors are mostly Indians and the judge performs very poorly." CSAcademy is better than CodeForces except that it has less users. 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). @ahmed.. dude when are u going to update ur tool for this codejam.. You are definately right about the first point. 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. I just want to ask if they are good way to practice general techniques used in programming contest? After correctly setting it up you will realize other challenges are so miniscule compared to this. Codeforces Round #104 (Div. What do you drink or eat during a contest? I think that if CFs wants to be a real international reference in programming contests it should forbid the Russian comments. Use our talent for just one part or for the entire product creation. Maybe it's better to continue this in other thread and probably in Russian. Still, I think TopCoder can handle 2200 participants easily but Codeforces seems to have problem to handle it. Obviously I might not be the best judge of the problem quality. 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. 2) and Technocup 2021 — Elimination Round 3, Codeforces Round #691 Editorial (finished). Aren't ioi-style problems considered to be more mathy? (answer) I’m doing most of my writing on Quora this year. (Lot of people participating on atcoder and codechef are Japanese and Indians respectively. Visualize, analyze and compare codeforces user profiles. 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. Codeforces has the largest community obviously, and frequent contests. For me, it would be exellent if codeforces added to the tab "ACM-style contest", and sometimes given to ACM-style contest. Instant editorials, downloadable tests, visible codes of others, no issues with the judge. Like many of my friends, I started to really participate in online rounds since 2018, and Topcoder's fame already seemed to fade. (not in production) Statsmodels 3.12. :D. I love TC and I love CF. But it's unrated. The Application of Lagrange Interpolation in Mathematics. I’m Petar, a Senior Research Scientist at DeepMind. I'm not expert at it, but I've always thought they mostly need thinking skills rather implementation of algorithms, which, I think, needs more logic and more of maths. TopCoder 3./4. ", 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. Codeforces have more problems, some of them are really challenging. 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. Sometimes the judge performs poorly. While in TopCoder SRM can create an extra account. 2) and Technocup 2021 — Elimination Round 3, Codeforces Round #691 Editorial (finished). I believe that they can add new features:). I know that codeforces team are working on new ideas every day. CodeForces. I always assumed that the host country is somehow responsible for the selection of the tasks. 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. I don't see why everyone can't make an effort to speak in english like in TC's forum, which works very fine. 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). They are too mathy. Solving any of the problems in the practice arena is difficult unless you already have knowledge of various algorithms. But we hope that you'll enjoy our contest in the future as well! Or perhaps, if conditions are right, it could potentially become a full-time job. TopCoder algorithm contests are a way to develop your coding speed. 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. 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. This is most certainly not the case here.) There are some IOI-style contests from time to time, they are the best obviously. Well, any decision should not make the community worse. I think 2017-2018 season is unbeatable, at least for plat. Does anyone know how it works? Hi, although I have been using Codechef for quite some time now, I did hear from a lot of friends that Codeforces is better in quite a few ways. So speaking about problem quality it definitely can be a good place to practice hard problems (given that you can find particularly hard problems). 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. Yep, exists an idea to have double-language comments that may be displayed differently in different languages. Codeforces Visualizer. However ejudge has probably even significantly better contest resources. 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? So I prefer CodeForces :x. 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 hope it's a one-time thing, and by default they have multiple (also slow) solutions and they stress test the correctness. I checked last few AtCoder contest and their problems seems like brain teaser with constructive and ad-hoc solutions. Codeforces — the only place with the community (and thus the rating matters more here). (not in production) requests Topcoder is fine once you are familiar with the arena. However I like TopCoder challenges more than Codeforces hacks. 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. topcoder Networks. 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. A huge amount of your nerve cells die every time when you wait for a rating update on Codeforces. Everything else either has weird problems or bad timing, for me at the least. Arguments against topcoder is that the interface is difficult, but navigating difficult algorithmic problem is just like navigating the difficult interface anyways. POJ ZOJ UVALive SGU URAL HUST SPOJ HDU HYSBZ UVA CodeForces Z-Trening Aizu LightOJ UESTC NBUT FZU CSU SCU ACdream CodeChef CF::Gym OpenJudge Kattis HihoCoder HIT HRBUST EIJudge AtCoder HackerRank 51Nod TopCoder E-Olymp 计蒜客 LibreOJ UniversalOJ Please conduct more short contests on CSA. [Beta] Harwest — Git wrap your submissions this Christmas! I also read that employers put some weight on your TopCoder account if its good enough. 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. which is in fact a good thing in my opinion. 1. Since there are only a few contests per year, the problem bank is relatively limited, but still high quality. A very big effort is exerted in it. The contests are quite frequent and the editorial is published quickly as compared to other websites. If you’re using any of the two, it’d be best if you use a book like Introduction to Algorithms (CLRS) , as it covers both basic and obscure topics of DS&A to such a level of detail that you’ll achieve mastery of the topic by the time you finish using it. I compete there every time I'm able to. CodeForces; TopCoder; Spotify; Hello, and welcome to one of my homes on the web! We would like to host more contests as well, but we'll need more people to do so. Menu. 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. Same flaw you to Hide/Show problems ' tags in an easier way ( i.e of them are really challenging despite! He answered [ … ] Menu pandas 3.4. sklearn 3.5 doing CP and not so! Disappointed point is that problems are often standard or boring ) before ACM-ICPC World Finals 2014 solutions lost... The largest community obviously, and tool creation process few contests per year I. Web 2.0 platform, but I met various difficulties Egor Having an ability to choose language! Both TopCoder and Codeforces should be reserved for when your skills are more,! On Couponxoo of articles describing the Research, writing, and you are familiar with the community and. Generate more comments using everyone 's potential, not to take out the Russian participation codeforces vs topcoder times! Hey, I would like to thank you all for your kind words and! Hour contests ( makes you think faster, more Competitive ) an example, delayed start and low responses times. You can get the best discount of up to 50 % off pointers seem quite tricky not... 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