Problem
A 五彩斑斓（colorful）
B 错峰旅行（travel）
C 线段树（segment）
D 量子隧穿问题（experiment）

According to the contest rules, you cannot view your submission details at current.

Oh, there is no clarification!

1127

Status: Done
Rule: OI
Problem: 4
Start at: 2025-11-27 8:00
End at: 2025-11-27 11:30
Duration: 3.5 hour(s)
Host: kcs007
Partic.: 9