Elderly people with frailty, which affects up to one-quarter of over-50s, increased their endurance after a single dose of stem cells.
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思路：倒序遍历 + 单调索引栈（仅存索引），计算下一个高温的间隔天数。栈顶索引 - 当前索引即为等待天数。
（四）调解民间纠纷，促进家庭和睦、邻里和谐、社区安宁；