使用modified Roboson 完全遍历一棵树并且输出每次遍历当前结点往后的路径，以及这些路径的孩子，其实这个程序功能远不如此-Complete Coverage using modified Roboson output of each iteration, a tree and the subsequent path of the current node, and the children of these paths, in fact, so far the program fea