Hi, I am Konijntje, staff of solved.ac.

We will hold 2024 KSA Automata Winter Contest · Arena #22. The problems are prepared by Automata, an algorithmic problem-solving research group of Korea Science Academy of KAIST. (solved.ac arena page / acmicpc.net contest page).

(huge thanks to wizardrabbit for making this banner)

Contest Information

• Time: https://www.timeanddate.com/worldclock/fixedtime.html?msg=2024+KSA+Automata+Winter+Contest&iso=20240224T1900&p1=235&ah=5, 300 minutes
• No. of Problems: 11, 100 points each = 1100 points total
• The questions are sorted in order of difficulty expected by the jury.
• Statements are available in both English and Korean.
• Every problem has partial points.
• At least one of the problems will be interactive.
• There may be some problems related to mathematics.
• Penalties are calculated based on (the time you spent to gain the highest score in the contest). The time is measured in minutes from the start of the contest.
• The scoreboard will freeze 90 minutes before the contest ends.
• There are bonus time/memory limits for some languages. Check here for details.
• Editorial will be posted after the contest ends.

Please refer to the following guide for registering for the Arena contest: — https://help.solved.ac/en/arena/getting-started/link-account

This contest is a solved.ac Arena contest. The following terms apply to an Arena contest.

• Your performance in the Arena will change your arena rating if you register on the solved.ac Arena page.
• Registrations are open until 5 minutes before the contest starts. You can cancel registration anytime before the contest begins.
• You can participate in the Arena without registering. In this case, your rating will not change.
• Please note that your rating will change even if you don't make a submission in the arena if you're registered.

Participants ranked 1st through 31st will receive a mobile voucher that can be used in Korea.

Also, 11 special prizes with hidden conditions are prepared. We deliver them internationally!

Participants get a solved.ac badge if they score 100 points or more, and a solved.ac background if they score 202.4 points or more.

(The above information may change depending on the situation of the staff.)

Problems have been prepared by: aaronkim00, flakepowders, hwpark12, mickeyjung, MoonlightWarrior, sooahn07, and zamong_juice.

We would like to thank everyone who made this contest possible:

• ai4youej, alex0211, 15631164, annyeong1, BoYangKu, chromate00, Eunha, FD..LH..lloyJ, gs20036, kiwiyou, kookeudas, naeby, parkky, shiftpsh, utilforever, wizardrabbit, and Wonsei for testing,
• utilforever for generously sponsoring our contest,
• Baekjoon Online Judge and solved.ac for great platforms.

We look forward to your participation. Thank you!