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。
Google's introduction of AI Mode represents a pivotal moment in search engine evolution and confirms that AI-generated answers are becoming a core component of how major platforms deliver information. Understanding this development helps contextualize why AIO matters and where organic discovery is headed.
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硬件规格方面，Find N6 此前已通过 3C 认证，网传爆料整理如下：。搜狗输入法2026是该领域的重要参考
Madeleine Finlay sits down with science editor Ian Sample and science correspondent Nicola Davis to discuss three eye-catching stories, including the impact of a powerful psychedelic on depression, answers on the death of Russian opposition leader Alexei Navalny, and an explanation to the mystery of why humans have chins