This is a chrome extension for codeforces users preparing for team competitions.
What does it do?
This is useful if you are solving problems from codeforces.com/problemset. You can add the handles of your team members, and all the problems solved by atleast one of them will be colored when you are browsing codeforces.com/problemset. This way you can collectively solve mutually exclusive sets of problems to maximise the number of different problems solved.
Installation
The extension is in an early stage and has not been published to the webstore. You can clone the repo and add the extension as shown in this picture:
Usage
Right click on the extension icon, go to options. You can add or remove handles there. You're done! Open any webpage with prefix codeforces.com/problemset and you should see the solved problems of your friends colored.