Hello, Codeforces!

I am super excited to invite you to participate in Codeforces Round (Div. 3), which will take place on Apr/30/2026 17:35 (Moscow time). You will be given $$$2$$$ hours and $$$30$$$ minutes to solve $$$8$$$ problems. All problems were authored and prepared by me.

The round will be hosted by rules of educational rounds (extended ICPC). Thus, all solutions will be judged on preliminary tests during the round, and after the round, there will be a 12-hour phase of open hacks. After the open hack phase, all accepted solutions will be rejudged on successful hacks. Also, note that there is no score distribution but the usual penalty of 10 minutes for each wrong submission, following the rules of educational rounds.

Remember that only the trusted participants of the third division will be included in the official standings table. As it is written by link, this is a compulsory measure for combating unsporting behavior. To qualify as a trusted participant of the third division, you must:

• take part in at least five rated rounds (and solve at least one problem in each of them)
• do not have a rating of 1900 or higher at any moment in time.

Regardless of whether you are a trusted participant of the third division or not, if your rating is less than 1600, then the round will be rated for you (unless you register unrated).

I would like to thank the following people for making this round possible:

• cry for coordinating the round;
• __baozii__ for red testing;
• -firefly-, omsincoconut for orange testing;
• cgmoreda, SpyrosAliv, wuhudsm, Argentum47 for purple testing;
• mathtsai, chromate00 (VIP), Mousa for blue testing;
• simplelife for cyan testing;
• lina_os, Syrianooo for green testing;
• Vladosiya for statement translation and testing;
• MikeMirzayanov for developing Codeforces and Polygon.

Good luck, and most importantly, have fun!