Hola Codeforces!

We are really excited to invite you to participate in Codeforces Round #1093 (Div. 1) and Codeforces Round #1093 (Div. 2), which will be held on Apr/13/2026 17:35 (Moscow time).

For division 1, you will be given 2 hours to solve 5 problems, for division 2, you will be given 2 hours to solve 6 problems. Note that at least one of the problems will be divided into subtasks. Furthermore, at least one problem may be interactive, so please read the guide for interactive problems if you are not familiar with them.

The scoring distribution will be announced later.

The problems were authored and prepared by misteg168, danx, rlidon2006, and Misuki.

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

244mhq for his orz coordination and support throughout the round, and also for the Russian translation.

A_G, dinohaur, zltzlt, omeganot, IceKnight1093, fishy15, ub33, awang11, Justinshao, Pablo-No, FelixMP, madlogic, pandaa73, chromate00, IceSerpent, Lucia_Aparicio, aniervs, and Kalufas for testing the round and providing priceless feedback.

MikeMirzayanov and KAN for the great platforms Codeforces and Polygon.

And finally, You, for participating!

We wish you all an exciting experience. Good luck and have fun!

UPD1 Scoring distribution:

div2 500-1000-1500-(1000+1000)+2500+3000

div1 500-(750+500)-1750-2250-3000

UPD2 Spain's Olympiad in Informatics:

This round was based on the Spanish Olympiad in Informatics, which took place last weekend. Thanks to all contributors!

UPD3 Editorial is out