用搜索算法解决华容道游戏问题。可对于任何开局给出游戏的解，并给出每一层展开节点数目和所用时间。程序内置多种开局，并预留A*算法结构。-Huarong game search algorithm to solve the problem. Solution of the game can be given for any start and expand the number of nodes in each layer is given and the time. The program bui