He was at the heart of 1960s counterculture, then paved the way for the libertarian mindset of Silicon Valley. At 87, Brand is still keen to ensure the world is maintained properly – not just today, but for the next 10,000 years
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。
，详情可参考51吃瓜
今天的中国，科技成果惠及千家万户，民生商品量足价稳，社区服务丰富暖心。秉承“让人民过上幸福生活是头等大事”，擦亮“民生为大”的价值底色，大国发展的宏伟蓝图正化作万家灯火的幸福实景。，详情可参考旺商聊官方下载
Consider some of the more obscure tests that implementations must pass: