* @param {number[]} speed 每辆车的速度数组（英里/小时）
* - this.stack：单调递减栈，存储「价格对应的索引」，栈顶→栈底索引对应的价格单调递减
，更多细节参见Line官方版本下载
The bald eagle was safely removed from the water and transported to a New Jersey sanctuary, officials said.
tool can only analyze the data it has access to
git clone --recursive https://github.com/noahkay13/parakeet.cpp