chrome link: http://cf-predictor-frontend.herokuapp.com/ , chrome direct online application store to download (need over the wall)
crx file download link:
http://www.chromestore.cn/2018/09/18/nbhext-for-codeforces/
http://www.chromestore.cn/wp-content/themes/bigchrome/down.php?id=12303
Three upper right corner, more tools, expanding the program, drag and drop files directly into the crx
But after chrome version 67 can not be dragged off crx format plug-in installation
Solution:
Suffix .crx into .rar / .zip, unzip into a folder, and then drag the folder into
If this step still does not appear to do the following format
The next Firefox, the upper right corner, add-ons, expand, looking for more expansion, searching cf-predictor, + Add to Firefox plugin installation.
Direct link: https://addons.mozilla.org/zh-CN/firefox/addon/cf-predictor/?src=search