Problem
A 单选题
B 甜度指数
C 包装
D 升级咖啡豆
E 库存调配

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保山市 2025 年中小学生青奥赛选拔赛（信息学）

Status: Done
Rule: OI
Problem: 5
Start at: 2025-10-18 8:30
End at: 2025-10-18 12:00
Duration: 3.5 hour(s)
Host: jack
Partic.: 174