Codeforces Practice Timer

Codeforces Practice Timer adds a small, native-looking stopwatch to the sidebar of Codeforces problem pages, so you can time yourself while you practice. • Start and pause the timer as you work through a problem. • Your time is saved per problem. • Records sync across the Chrome browsers you're signed into. • It matches Codeforces' own styling and sits right inside the problem's contest box. • Shows up only on finished contests, so it stays out of the way during live rounds.