说明：  通用的遗传算法，可实现以下问题：（a）设计出n种不同尺寸货品的排放方法，使得集装箱的空间利用率最高；（b）给出一批货物所需的最少集装箱数量。请给出在附件一对应具体问题下的最优排放及空间利用率。
(General genetic algorithm, can achieve the following questions: (a) design of size n different methods of emission goods, allowing maximum utilization of container space (b) shows the number of minimum required number of containers of goods. Please give specific issues in the corresponding Annex I emissions, and under optimal space utilization.)