I know there's already hundreds of cf analytic projects but trust me i have cool graphs to show. check out the website on https://cf-cool-graphs.vercel.app/

Cool Features:

Performance Calculator: -> Calculate your in-contest and virtual performance (i know tle bot can calculate performance but it doesn't do virtual performance); virtual performance is just an estimate based on your placement compared to the official rankings; Because I am poor the calculations will take a bit of time so sorry about that;

https://mirror.codeforces.com/bbb891/Screenshot 2026-05-23 153635.png

Rolling Average: -> Gives your 50-problem rolling average ratings; This is my favorite graph to be honest; its a good tell if you are improving or not, even if the rating is quite flat; I attached my recent 50-day average and it was quite motivating cause I am stalling in rating;

https://mirror.codeforces.com/d5d0ec/Screenshot 2026-05-23 152116.png

Upsolve Tracker: -> It just shows if you upsolved the problem after contest; The upsolve rate is strictly based on the next unsolved problem of the contest but the upsolve count also counts problems after that; Say you don't solve D, but later you upsolve D and E, it adds to the upsolve count twice but only D is counted for upsolve rate;

/predownloaded/ed/ae/edae767570270ff5581edbe8a3ec9fe34f845aac.png (There's also a list of all the problems you have to upsolve at the bottom of the graph;)

Weakness Map: -> Just compares the tag rating compared to the rating you had when you solved it; the farther right it is, the higher the rating of the tag is compared to your rating; the lower it is, the worse your AC rate is; the size of the circle is for the amount of solves that tag has;

https://mirror.codeforces.com/d42909/Screenshot 2026-05-23 152843.png

There's a bunch more on the site, but those graphs are my favorite ones :); please check them out and tell me if you have some ideas for more graphs to plot!

Other graphs: -> Plot rating with max-problem-rating overlaid; -> Tag-specific Rolling Average -> Solve count graph -> Rating buckets -> Rating Heatmap -> Solved tags -> Tag AC rate (sorted) -> Solve time (per rating based on contest and virtual performance) -> Activity (Time in your timezone where you solve the most problems) -> Rating AC rate