说明：  用回溯法求解装载问题，对有解的装载问题，采用的策略可以得到最优装载方案 （1）首先将第一艘轮船尽可能装满； （2）然后将剩余的集装箱装上第二艘轮船
(With back problems loading method, loading of the solvability problem, using the optimal strategy can be loaded with the program (1) First of all, the first a ship filled with as much as possible (2) and then the remainder of the container loaded on a second aircraft steamship)