Codeforces FriendsAccepted oleh OmikAcharya

This lightweight Firefox extension makes it easy to view your friends' accepted solutions on Codeforces with a single key press (G).
When you're viewing a Codeforces problem, just press G to quickly open the page showing your friends' correct submissions for that problem.
No extra UI or clutter, just a simple shortcut to save you time and effort while browsing Codeforces.