Hey, thank you! There is a small bug. * View contests & their problems * Search problems by tags * Search for users * Track rating changes * Track recent … Hey, great work guys. Everybody is welcome to contribute to our Github repository. For example, getting red in 2015 became much easier than in 2013. CodeChef was created as a platform to help programmers make it big in the world of algorithms, computer programming, and programming contests.At CodeChef we work hard to revive the geek in you by hosting a programming contest at the start of the month and two smaller programming challenges at the middle and end of the month. Seems like there are some shenanigans with the Codeforces API and calling the following method fails for some reason. Sort users by rating and last participation date. Codeforces Visualizer allows you to view list of upcoming contests schedule and past contests. So deltas for past contests will be calculating correctly. CF-Predictor offered by Wsl_F (119) 20,000+ users. It's actually the same as from Codeforces. No, it does not. And also virtual contests will be supported. on Codeforces instead of distracting posts on Facebook news feed. seems awesome!!! Shortlist and register for upcoming Competitive Programming contests: Codeforces, LeetCode, HackerEarth, AtCoder, TopCoder, CS Academy, CodeChef, Kick Start. What do you drink or eat during a contest? but i forgot to write about it all time. It doesn't work, shows 0s for everyone and when I double click on a cell to view the submissions it gets stuck on the loading page. So their rating still were 0 instead 1500. Thank you all guys for your feedback. Seems to be a problem with the CodeForces API once again, the URL used by the extension (http://codeforces.com/api/user.ratedList?activeOnly=true) gives Error 503 Service Temporarily Unavailable. So we had to switch this process to the browser's background every time it's launched. Users acquire rating points based on the results of those contests, and contests are divided into 2 groups - less complex and more complex. You are right. I disabled the extension before contest and during the contest i enabled it. It is the features for all active users. Need help on How to change my USER NAME in codeforces. Edit: Btw, the fact that the extension is underestimating the rating change in most (all?) Possible bug: on standings page, when i double click in any cell to view submission history, it doesn't get loaded (the 'loading' icon keeps on rotating). We will look into it and try to fix it before the next contest. Since I couldn't find the latest rating distribution of Codeforces, I created it. Thank you, rofi93. Panasonic Programming Contest (AtCoder Beginner Contest 186) Announcement, Technocup 2021 Elimination Round 3 and Round #692 (Div. Facts from stats! Time phase is period of time (ex. Since May 2018, users with ratings between 1900 and 2099 can be rated in both Div. 3. Rating for unrated users is 1500. Codeforces is a free online platform that offers regular coding contests. The only programming contests Web 2.0 platform, http://codeforces.com/contest/592/problem/D?csrf_token=c15c2c92bb3f42d2467b7131ae6e68ee, http://codeforces.com/api/user.ratedList?activeOnly=true, Invitation to CodeChef December Cook-Off 2020. Is it just me? How did you get the aggregated data? parseInt almost everywhere solved the problem, great :) At this point we had right rating change calculation method, but it was very slow. Sort users by rating and last participation date. Shortlist and register for upcoming Competitive Programming contests: Codeforces, LeetCode, HackerEarth, AtCoder, TopCoder, CS … 1500 is just a some nice number which … Overview. I wonder why that happens. Analyzing correlations of Codeforces users and their ratings - CaioIcy/codeforces-analysis Only once, when the browser is launched. some people are reluctant to join contests if they think their rank will fall / they'll lose colour. Current changes seem to be smaller than previous ones. Recently I noticed that the extension gives 0 for all handles :\. you're right , really exciting :). On testing data results were 100% correct. Sorry I have a question ?! Rating 1509 can be in the top 25%? Rating for unrated users is 1500. Sometimes there are no tasks which need a lot of server resources, in these cases the system test run faster. Knowing my expected rating change during the contest was very cool! This extension just adds some buttons to Hide/Show the problems' tags whenever you want. Thanks. Track progress by viewing recent submissions & rating changes or check those of other Codeforces users! I'd love to try my hand at it if no one else is already working on the same... Oh sure, that would be great, thank you! By the way, thank you all for the extension! Programming competitions and contests, programming community. 2) Editorial, Codeforces Round 692 (Div. Follow Recent Actions. it does not work for me. Also, shouldn't the extension be under "productivity" in the Chrome store and not "accessibility"? Nice and user-friendly application, which leverages Codeforces API to bring more competitive programming to Android devices. A big thanks to Mike Mirzayanov for being friendly, ready to collaborate and giving few pieces of advice. Can this extention be made for Firefox ??? I was just about to post the same comment! The API couldn't serve too heavy requests about standings list. But it usually doesn't work. After the extensions attracted so much attention we have no choice but to do our best in order to make it better. And don't forget to make a pull request when you are done. If I go to the standings of some past contest, the delta column I see there is completely different from the actual rating changes shown in the RATING CHANGES tab. 2) Editorial, Codeforces Round 692 (Div. Shortlist and register for upcoming Competitive Programming contests: Codeforces, LeetCode, HackerEarth, AtCoder, TopCoder, CS … :( what's wrong ?? A new (and pretty basic) rating system for X-Users. [Beta] Harwest — Git wrap your submissions this Christmas! [Beta] Harwest — Git wrap your submissions this Christmas! We are changing rating from 0 to 1500 in our scripts. 2) and Technocup 2021 — Elimination Round 3, Codeforces Round #691 Editorial (finished), Presenting TLE: the best Codeforces bot for Discord. :). ), Looks like 1k_trash has an interesting pastime activity! Since our RMS Error is around 75 points we could certainly tell that we are only one or two contests behind the actual rating of the user. Published on Apr 10, 2017. What do you drink or eat during a contest? The Application of Lagrange Interpolation in Mathematics. Programming competitions and contests, programming community. We will make a lot of changes this week: fix bugs you reported, add requested features, switch to backend in order to decrease pressure on CF servers during the contest. the rating changes it calculated were wrong. Watch for activity of any Codeforces user. At first, we couldn't make the extension work with large scoreboards (div2 or mixed rounds). 3. Contribute to Officeyutong/codeforces-rating development by creating an account on GitHub. I once saw +1000 for an unrated user.It's usually wrong by 20-30, but in today's contest it was very accurate (at least for me and some of my friends), I'm slightly saddened that you decided to screenshot my implementation failures for C and D for eternity :(, I'm also happy to see I wasn't the only one to do that :), Oh dear, It is only for G. Chrome. 4. Ah, the beautiful Central Limit Theorem at work. Introduction to Codeforces PlatformDive into www.codeforces.com 1. Also, according to the extension, several unrated coders were supposed to get +800. MikeMirzayanov said that there are several reasons: After 1k_trash, Maxim and me read the third reason, we started to think what can be done about it. Looks like it only doesn't work for legendary grandmasters. 2. You can find all rounds in which someone was listed as a X-User. By default, the tags will be hidden. Few weeks ago there was yet another discussion about "omg why we wait for the rating updates so long!?!?!" We thought it will be interesting to know how the contest is going right now. But I am Failed to Find or Run it . 'sorted(set(s))' in Python gets me a TLE. In current situation K is about 3-4k, so our solution started to work about 20 times faster! You can find all X-Users of a round. Standings data loading every time you open standings page. That doesn't look neither like changes that happened at time of the contest or like changes that should happen if this was current contest — deltas are way too high (like 2 times?). Screenshot was taken on #317 if that's of any relevance. Hello, I had a doubt. Nice app. i have the same problem. So that means we should notify MikeMirzayanov to have it fixed, right? Hello usaxena95, thanks for your reply. If you decrease starting rating not for all users, then all the ratings are still decreased, but now it is unconverged. Showing 0 for everyone !! Codeforces Watcher allows: 1. It takes about two minutes. If you rating is steadily going down, doesn't mean you haven't been improving; it just means relative to others you haven't been doing as well. Actually It's not that interesting, binomial distribution is expected to happen in most distributions related to ratings. (I think refreshing didn't fix it, but now (after contest) it's working again. (This time also with activeOnly=false.) Yes, I know, I have taken that into consideration — "That doesn't look (...) like changes that should happen if this was current contest" ;). A web app developed using Flask that compiles all the Problems on Codeforces that you have attempted (submitted at least once) but could not get Accepted verdict. Lately I'm just getting 0s for everyone all the time. Sorry , I wanted to Upvote your commment but by mistake i clicked downvote. With ratings, we have ranks. Any help? With no doubt we will fix shortly. Anyway,will see tomorrow). If i try to check the Show Unofficial box in the standing, it doesn't work and gives an error while keeping enabled the extension. Maybe you can make it userscript like this or this? Why you don't calculate rating after contest just once and save it in a file or database, then extension must just download data from your host and use them without calculation ? How did you create the rating distribution? When you take part in individual contests, don't talk about the problems with other contestants, don't use somebody else's code or insert it into your solutions. This extension predicts rating changes for Codeforces. -100 to all new users is EQUIVALENT to +100 to all old users. And occasionally, it's completely off. We need it for mozilla firefox. Results are absolutely correct. Please try again later. Also, the extension starts showing non-zero changes (although incorrect, of course) if that parameter value is changed from false to true in the extension package. Hope you love it! Almost Binomial Distribution.Interesting! How do you think that should explain such high deltas? If you pick up who has been participated contests more than 5 times, it will be look like this. Didn't catch it during our testing. Don't be rude, don't insult other participants and administration, try to be polite and pleasant to communicate with. So their rating still were 0 instead 1500. 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