栈（stack）是先进后出的数据结构。单调栈在入栈时通过一定规则保持栈内元素有序（单调递增或单调递减），从而把「找左侧/右侧第一个更大/更小元素」从 O(n²) 降到 O(n)。
union object_info *h;
，详情可参考Line官方版本下载
Public health consultant Dr Ross Keat said supporting people earlier to make small preventative changes would make "a big difference later on".
This number, the EA said, would rise if more homes were built on floodplains. The UK government plans to build 1.5 million homes in this Parliament, and in some parts of the country more than 10% of new homes are being built in flood-prone zones.
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27 февраля ракетную опасность объявили в Оренбургской, Самарской и Свердловской областях, а также в Чувашии, Татарстане, Башкирии, Удмуртии. По данным Shot, эвакуированы сотрудники ряда предприятий, в учебных заведениях приостановлены занятия.，这一点在heLLoword翻译官方下载中也有详细论述