Hello Codeforces!

We are hosting four live and exciting rated 15-minute 15-problem rounds, at 7 PM for the Under 1400 division, and then 7:30 PM, 8 PM, and 8:30 PM for everyone! (all ET) — This is a cool opportunity to compete with some really good mathletes!

You can Register Here for Lightning 4, 5, 6, and 7 (note: this will take you to Lightning 5, you can click on 'Contests' to register for the others! If your rating is 1400 or above, you will be unable to register for Lightning 4) and/or join the discussion in Discord — and then come back at the competition time for an exciting round!

Hope to see you there! (Pictured is Lightning Round 3 from a few days ago :) )