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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。。业内人士推荐快连下载-Letsvpn下载作为进阶阅读
Save to wishlistSave to wishlist。服务器推荐是该领域的重要参考
The developer is never warned that the keys' privileges changed underneath it. (The key went from public identifier to secret credential).，更多细节参见旺商聊官方下载