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Subject: General Issue | Jury @ 2025-9-19 21:10:27

F题中 $100\%$ 的数据范围已添加：且 $R,B$ 不同时为 $0$ 。
Subject: B1. [R30B]爬楼梯 | Jury @ 2025-9-19 20:05:19

B题数据范围中 $1 \leq M \leq N$ 修正为 $0 \leq M \leq N$ ，非常抱歉

代码源挑战赛 Round 30

Problems