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。
# Word-level timestamps，更多细节参见旺商聊官方下载
Bell and her partner Steve Powell, from Kent, paid tribute to the "kindness and selflessness" of the donor and her family for their "incredible gift", while also thanking medical teams in Oxford and London who supported their journey.，更多细节参见夫子
Москвичей предупредили о резком похолодании09:45，更多细节参见一键获取谷歌浏览器下载