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。
The last week has been particularly tumultuous for Microsoft's gaming division. Former Microsoft Gaming CEO Phil Spencer announced his retirement on Friday, alongside the appointment of Asha Sharma, the President of Microsoft's CoreAI division, as his replacement. Opinions differ as to whether Sharma's new position will be good or bad for Xbox, but more changes are likely on the way.。关于这个话题，51吃瓜提供了深入分析
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Овечкин продлил безголевую серию в составе Вашингтона09:40
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