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operated on a stack-backed slice up to the return point.，详情可参考heLLoword翻译官方下载
Local caching -- disk cache avoids WebSocket round-trips for console/exec，更多细节参见搜狗输入法2026
Radio 4,·24 Feb 2026,·27 mins
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。，更多细节参见Line官方版本下载