// ⚠️ 易错点3：此处返回n而非0（完全有序无需排序，长度为0）
In the 250-plus years between the invention of the water-powered spinning jenny and artificial intelligence, we have developed technology and technique with the primary aim of reducing the number of people necessary to employ for a given amount of output. On a finite planet, the amount of output must eventually stabilise. We cannot maintain for ever the notion that everyone must have a job in order to be allowed to have a life.
，更多细节参见safew官方版本下载
bind_port = 7000
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