The same picture is seen across the transport network - currently a third of railways are at risk of flooding, which leads to cancellations and damaged infrastructure.
Emits a documented output format (2 points)
,详情可参考Line官方版本下载
// 条件解读:栈非空 + 栈顶当前数 + 还有删除名额 → 弹出栈顶(移除大数)
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