思路：倒序遍历 2 倍长度 + 取模模拟循环 + 单调栈。用 i % len 映射到真实索引，仅当 i < len 时记录答案。
V86 mode dedicates an entire processor mode to backward compatibility, using fixed descriptor access rights and IOPL-based trapping to run unmodified 8086 code under full protection.，推荐阅读heLLoword翻译官方下载获取更多信息
Ahmed Ahmed is calling for a "high quality" research trial，详情可参考搜狗输入法2026
Александр Курбатов (редактор отдела «Бывший СССР»)