（五）居民委员会组织协商确定的事项及其落实情况；
* 时间复杂度: O(n^1.3)~O(n²) 取决于步长序列 空间复杂度: O(1) 稳定: ✗
，这一点在同城约会中也有详细论述
（四）强行冲闯公安机关设置的警戒带、警戒区或者检查点的。
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if the free list is scavanged. the general strategy is: