Credit: Samsung
Michaela (Masali Baduza) and Francesca (Hannah Dodd).
，更多细节参见safew官方版本下载
代码要点：倒序遍历，先算右侧再推左侧；栈内维护「右侧候选更大值」，单调递增（栈顶最小）。，更多细节参见搜狗输入法下载
随后，这名恐怖分子又走回桥上，而他的儿子似乎仍在继续射击。
Imagine a vast shopping mall parking lot with thousands of individual parking spots and internal lanes (representing road segments within a cluster). No matter how complex it is inside, there are usually only a few key exits to the main roads. Our goal was to identify these natural "exits" for each map cluster. For instance, the complex road network around Amsterdam Airport Schiphol (see on OpenStreetMap) has many internal roads but limited primary access points.