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: 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 :) )