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// 步骤5：扩展右边界（向右找所有<maxVal的元素，全程不越界）
，更多细节参见Line官方版本下载
Hebrew Paseq: a non-obvious finding。WPS官方版本下载对此有专业解读
Version: 42.20250921.0 (2025-09-21T19:04:38Z)