Tree Traversals (25)

输入描述:

Each input file contains one test case.  For each case, the first line gives a positive integer N (<=30), the total number of nodes in the binary tree.  The second line gives the postorder sequence and the third line gives the inorder sequence.  All the numbers in a line are separated by a space.

输出描述:

For each test case, print in one line the level order traversal sequence of the corresponding binary tree.  All the numbers in a line must be separated by exactly one space, and there must be no extra space at the end of the line.