Problem
A 02表示法（pow）
B 子串的子串（substring）
C 魔法咒语（magic）
D 表达式（expr）

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Subject: General Issue | Jury @ 2025-11-26 9:47:22

截至目前成绩在公告里

1126

Status: Done
Rule: OI
Problem: 4
Start at: 2025-11-26 8:00
End at: 2025-11-26 11:39
Duration: 3.7 hour(s)
Host: kcs007
Partic.: 10