除了返乡路上会遇到充电功率下降的问题，对于开电车回乡的小镇青年来说，乡镇的补能不足或许是另一大问题。
// 易错点1：边界处理 - 0辆车返回0，1辆车返回1（无需后续计算）
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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.，详情可参考WPS下载最新地址
-config: Config