识别信号
- Recognizes negative exponent handling is required.
- Uses recursion to optimize repeated multiplications.
- Look for understanding of recursion and factorials.
解题流程
- 1. 明确窗口/状态定义
- 2. 更新状态并维护约束
- 3. 用边界样例验证
常见失分点
- Failing to handle n = INT_MIN correctly when negating.
- Misunderstanding how factorials divide the problem into smaller sections, leading to incorrect permutation generation.
- Not handling negative numbers or zero correctly, which can lead to incorrect answers.
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