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。
// 2. 计算前缀和：count[i]表示<=i的元素个数，这一点在heLLoword翻译官方下载中也有详细论述
Москвичей предупредили о резком похолодании09:45。快连下载-Letsvpn下载对此有专业解读
Feb 27, 2026 4:08 AM
Pepers adds that since the company switched to a four-day week "staff sickness is down, and retention is up". But she says that the idea was initially a hard sell.