Person in charge

• cq_irritater
• 035966_L3

Attention

Submission of problem solutions is prohibited for this question.

Important Problem Announcements

All users must read the following information before starting the problem.

Please make good use of the problem label feature to search for questions.

It is recommended to solve all practice problems (currently $15$ in total) before starting.

Sleeping Cup currently supports the following problem types: traditional problems, objective problems, subjective problems, interactive problems, output-only problems, and communication problems.

You can download test data for Sleeping Cup #1 - #4 at Sleeping Cup's Testcases.

Do not engage in table-driven programming using the data. If such behavior is detected: first offense will result in a 14-day cheater tag; second offense will result in account suspension.

Generally, all problems on this website (excluding Long Long OJ problems and CTFPC problems) require file I/O.

Unless otherwise specified, all problems in Sleeping Cup contests have subtasks and subtask dependencies enabled.

Subtask $0$ for all problems is a non-scoring sample but is a dependency for all other subtasks.

For any issues regarding problems, please contact cq_irritater or 035966_L3.

For issues related to Long Long OJ problems, please additionally contact Murasame.

For issues related to CTFPC problems, please additionally contact 2058_lunar_fall.

For any problem-related issues, you may also report them here.

Feedback

Welcome to the Sleeping Cup Feedback Section!

You only need to submit your feedback text directly to complete the feedback process.

When your submission status changes to "Cancelled" or "Accepted," it means your feedback has been reviewed by the person in charge, who will respond as soon as possible. The person in charge regularly checks submissions for this question, so please avoid reminders.

For all Rating-related issues, please first submit an Issue at Sleeping Cup's Ratings.

For all issues related to test data for Sleeping Cup contest problems, please first submit an Issue at Sleeping Cup's Testcases.

Certification

Please submit your Luogu UID to complete certification.

Your submitted text must:

• Contain the substring Certification;
• Be at least $200$ characters long.

Main channel: Please submit the same text by messaging cirrationaler in Luogu again and wait for no more than 24 hours.

Backup channel: If we didn't process your application within 24 hours after submission, please submit the same text here again.

Email Unsubscription / Email Subscription

Submit the text Email Unsubscription to this problem to unsubscribe from system emails.

If you regret unsubscribing, submit the text Email Subscription to this problem to resubscribe.

Delete Account

Submit the text Delete Account to this problem to request account deletion.

Upon receiving your request, we will deactivate your account as soon as possible.

Deactivated accounts will automatically stop receiving system emails.