Babies are beautiful. I always want to smile at them in the street, perhaps because they are a rarer and more precious sight in this ageing country or because they remind me of my grandchildren. There are about 3.5 million children aged four and under, while dogs on the streets are a more plentiful 13.5 million. Is the dog boom compensating for fewer children? As time goes by, there are going to be ever more grandparents and ever fewer children to beam at foolishly.
* 核心思路：找初始无序边界 + 计算区间最值 + 扩展边界
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在外国船舶和航空器内发生的违反治安管理行为，依照中华人民共和国缔结或者参加的国际条约，中华人民共和国行使管辖权的，适用本法。