Hi everyone, hope you’re having a good day~

You might have heard about USACO(USA Computing Olympiads) before. While it has many great problems, it's kinda hard to practice on USACO because there are few ways to estimate a problem's difficulty. As a USACO participant, I know the pain of attempting a question and only realizing after reading the editorial that it’s either too easy or too hard, wasting a precious problem.

Therefore, I bring to you USACO Rating! USACO Rating is a web application tool for estimating USACO problems’ difficulties in terms of CF ratings. There is also a quality metrics, so you can practice on only the most worthy problems, and avoid low-quality ones. The website is here: https://codetiger.me/project/usaco/

We are also currently looking for more volunteers to better adjust the estimations through voting. If you’re interested, please check out https://codetiger.me/project/usaco/frontend/contribute.html

The project is also open source at https://github.com/CodeTiger927/USACO-Rating. So even if you don't really use USACO, you can freely modify this project and create a similar system for your country's CP olympiad :D! It is under the MIT License.

Hope you find it useful! And please contact me if you have any feedbacks <3