Submit a solution (在线提交答案) for 183rd Competition

Begin Time: 2023-12-15 13:00:00 (Beijing Time GMT +8)
End Time: 2024-01-05 13:00:00 (Beijing Time GMT +8)
Current Time: 2023-12-10 12:38:57 (Beijing Time GMT +8)

以上时间均为北京时间。

Show/Hide Competition Level (隐藏/显示比赛关卡)

The competition level will be shown as soon as the competition begins.

比赛时间一到，马上显示比赛关卡。

The solution you submitted will be always verified with the current competition level. If the solution is correct, it will be shown at the Submissions Table immediately.

提交的答案仅对当期比赛关卡有效。如果提交的答案是正确的，该答案会马上出现在提交列表。

Name(ID):
Please use the same ID for all your submissions. Also, please use only letters (a...z, A...Z) and numbers (0...9) in your ID, and make sure there are no leading or trailing spaces.
多次提交答案时，请用同一用户名。用户名只能使用字母和数字。

Country/Region (optional):
请选择国家或地区。
If your country/region is not listed or the information is not correct, please contact the webmaster.

Email (optional):
The e-mail address is used to contact the player if needed, and will not be shown to others.
电子邮件仅用于和参赛选手联络，不会向其他人泄露。

Solution:
For either the Main Level or the Extra Level. Paste in only the LURD solution, no extra text. Submit only one solution at a time.
请仅粘贴 LURD 格式答案，不要含有其他多余信息。一次只能提交一个答案。