2021-06-21:販賣機只支援硬幣支付,且收退都只支援10,50,100
就是curQianFirstBuyZhang curQianFirstBuyZhang := (x - preQianRest + qian[i] - 1) / qian[i] if zhang[i] >=...
就是curQianFirstBuyZhang curQianFirstBuyZhang := (x - preQianRest + qian[i] - 1) / qian[i] if zhang[i] >=...