ACM-ICPC-OJ训练营

问题 2439 --The order of a Tree

2439: The order of a Tree

时间限制: 1 Sec 内存限制: 128 MB
提交: 0 解决: 0
[提交][状态][讨论版][命题人:]

题目描述

As we know,the shape of a binary search tree is greatly related to the order of keys we insert. To be precisely:
1. insert a key k to a empty tree, then the tree become a tree with
only one node;
2. insert a key k to a nonempty tree, if k is less than the root ,insert
it to the left sub-tree;else insert k to the right sub-tree.
We call the order of keys we insert “the order of a tree”,your task is,given a oder of a tree, find the order of a tree with the least lexicographic order that generate the same tree.Two trees are the same if and only if they have the same shape.

输入描述

There are multiple test cases in an input file. The first line of each testcase is an integer n(n <= 100,000),represent the number of nodes.The second line has n intergers,k1 to kn,represent the order of a tree.To make if more simple, k1 to kn is a sequence of 1 to n.

输出描述

One line with n intergers, which are the order of a tree that generate the same tree with the least lexicographic.

样例输入

4
1 3 4 2

样例输出

1 3 2 4

来源

20朱琳钰

[提交][状态]