赛前模拟3
请注意文件读写
The contest is a flexible time contest. You need to complete the contest within a specified time after you attended.
- Status
- Done
- Rule
- OI
- Problem
- 4
- Start at
- 2024-10-24 15:30
- End at
- 2024-10-25 1:30
- Duration
- 3 hour(s)
- Host
-
jack
- Partic.
- 9