Non-ranking SRound #1

Hello, Codeforces! ＼(≧▽≦)／

I, Ilya_Is2022, am glad to invite each of you to our interesting SRound #1 (Based on the failed city school championship), which will be held in Friday, June 16, 2023 at 14:35UTC! This round was developed independently of the division system created on Codeforces, so each participant of the competition will have something to solve (◕‿◕).

The round will be held according to the standard rules ICPC! Thus, the penalty for each incorrect parcel before the parcel becomes a complete solution will be equal to 20 minutes.

You will be asked log232≤x≤log2256log2⁡32≤x≤log2⁡256, where xx is the number of tasks ʕ ᵔᴥᵔ ʔ and 2 hours 5 minutes to solve them.One of the tasks is interactive. Don't forget to read the instructions for interactive tasks.

The organizers of this round:

• Isaev Ilya_Is2022 Ilya is the author of the tasks and the coordinator of the round.

• Nekrasov nekstas Stanislav and Moskaleva [user:visa1310,2023-06-05 ] Victoria — authors of tasks.

Words of gratitude:

• MikeMirzayanov — for the wonderful platforms Codeforces and Polygon.

• Nikonova Daria— for the excellent translation of the terms into English!

• Alexfil — for the blue testing of the competition!

• metlik — for the turquoise testing round!

• Hochmuch, Alexzzz — for the green testing round!

• donovilia2007, J3RRyE, Risan99, I_R7S_I — for the gray testing round!