Atcoder Companion

This extension offers some key features:

1. Estimate performance and rating during contests (experimental, may be unstable).
2. Add test cases to a problem statement (disabled by default, open the setting popup to enable).
3. Show the status of the problems you have submitted.
4. Allow copying and downloading test cases (each or all) with one click.
5. Simplify debugging with the custom test page.

Blog on Codeforces: https://codeforces.com/blog/entry/133287 Feel free to open an issue or submit a pull request on GitHub: https://github.com/conlacda/atcoder-companion

============================ 下記の機能を提供しています：

1. コンテスト開催中のパフォーマンス値やレーティングの表示（実験的な機能）。