识别信号
- Check if the candidate handles carry propagation correctly in a digit-by-digit simulation.
- Watch for attempts to convert strings directly to integers, which violates constraints.
- Do you handle carry properly when adding binary digits?
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 reverse the input strings before multiplying can misalign digits and produce incorrect results.
- Ignoring the carry during addition can lead to incorrect results.
- Forgetting to subtract 1 before modulo leads to incorrect letters for multiples of 26.
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