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Jul 26, 2024 · Rating predictor for Codeforces. Carrot enhances Codeforces ranklists. For an active contest: Carrot calculates rating changes according the current standings when you open the ranklist,...
- Overview
- FAQ
A browser extension to enhance Codeforces ranklists
For an active contest
Carrot calculates rating changes according the current standings when you open the ranklist, and displays them in a new column. Carrot also adds a column showing the delta required to rank up. The delta calculation is done in real time.
For a finished contest
Carrot displays the final deltas of each contestant in a new column and shows their rank change, if any, in an adjacent column.
For both active and finished contests, Carrot displays a column for performance, the rating at which the delta would be zero.
How does it work?
Carrot runs in the browser and fetches all the data it needs from the Codeforces API.
It then calculates the rating changes following the algorithm published by Mike Mirzayanov here, slightly modified so that it matches the current CF algorithm. This updated algorithm is adapted from TLE.
Is this better than CF-Predictor?
Not necessarily. The CF-Predictor extension communicates with a server, while Carrot fetches data and performs all calculations in the browser. So the network usage is significantly lower for CF-Predictor. However, Carrot is 100% accurate (see #18), it works in real time, and it shows performance values.
How is Carrot fast enough to calculate rating changes of every contestant in real time?
Apr 14, 2024 · Carrot enhances Codeforces ranklists by showing rating changes, deltas and performance for active and finished contests. It runs in the browser and communicates with the Codeforces API.
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Each of Carrot's columns can now be toggled, so you can hide the columns you are not interested in and reduce clutter. The controls can be accessed in the extension icon's popup when on a ranklist.
Carrot predicts rating change and analys performance. CF Analytics Analyse profiles. Include statistics of problems solved. A bar chart showing problems solved for each problem rating, a doughnut chart displaying tags solved across any problem and also lists a count for each tag.
A huge amount of your nerve cells die every time when you wait for a rating update on Codeforces. Stop this! From now you could use this service, it calculates approximate rating changes for every contestant.
Apr 15, 2024 · Carrot is a dynamic extension that provides real-time analytical data for Codeforces contests. It predicts rating changes, shows deltas, performance ratings, and allows users to toggle columns as per preference.
