Toggle navigation
Home
Problems
Training
Group
Contests
Status
Rating
Wiki
Signup
Login
Start:
2025-07-24 17:50:00
暑假训练赛13
End:
2025-07-24 20:40:00
Now
2025-12-02 14:14:00
类型
: IOI
状态
: Ended
Information
Problem
Status
Standing
Editorial
出题人去火星旅游了，这里什么也没有～