We've just rescheduled our contests.

Next Saturday, we'll hold a long (most probably 5 hours, but it is not finalized yet) contest on AtCoder. Note that the start time is unusual: please check here.

The problems are based on one of the problemsets of Petrozavodsk camp. If you are a participant of Petrozavodsk camp, please don't participate in this contest. And of course, please keep the problems secret!

This is a rated contest for everyone, and this contest counts for GP30 scores. If you are a Petrozavodsk participant and you care GP30 scores, please let me know. We'll make sure that you won't get disadvantages (please check here, we'll handle you as a writer, i.e., increase the value of Y by one).

The writers are japan02 team (yosupo, sugim48, sigma425).

Note that AGC 021 was postponed to avoid collision with an Open Cup round.