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思路：① 算每辆车到达时间 = (target - position) / speed；② 按位置降序排序；③ 单调递增栈：仅当当前时间 栈顶时间时压栈（新车队），否则合并。栈长即为车队数。可优化为用变量代替栈。，推荐阅读搜狗输入法下载获取更多信息
The discovery of a carnyx (above) and a boar's head flag standard in the same hoard has been described as "a discovery of a lifetime" by archaeologists。业内人士推荐搜狗输入法2026作为进阶阅读
第二盏灯：位置在右下方 (1, -2, -4)，负责照亮物体的背面或暗部。
And East Hampshire District Council also confirmed availability of bin lorries was behind its delay, saying it did not yet have a date for when food waste collections would start.