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。
spoof(hookedSet, origSet);，详情可参考搜狗输入法2026
Владимир Зеленский. Фото: Thilo Schmuelgen / Reuters，详情可参考搜狗输入法下载
Another way to approach the linear combination is to look at it geometrically. This is where the idea of barycentric coordinates can help. A barycentric coordinate system describes the location of a point as the weighted sum of the regular coordinates of the vertices forming a simplex. In other words, it describes a linear combination with respect to a set of points, where in -dimensional space.，更多细节参见服务器推荐
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