小G的ACM之路

Tree Summing  Background LISP was one of the earliest high-level programming languages and, with FORTRAN, is one of the oldest languages currently being used. Lists, which are the fundamen

Quadtrees  A quadtree is a representation format used to encode images. The fundamental idea behind the quadtree is that any image can be split into four quadrants. Each quadrant may again

Problem D Undraw the Trees Input: Standard Input Output: Standard Output Time Limit: 2 Seconds   Professor Homer has been reported missing. We suspect that his recent research works might h

The Falling Leaves  Each year, fall in the North Central region is accompanied by the brilliant colors of the leaves on the trees, followed quickly by the falling leaves accumulating under

Not so Mobile  Before being an ubiquous communications gadget, a mobile was just a structure made of strings and wires suspending colourfull things. This kind of mobile is usually found han

二叉树遍历（前序，中序，后序) 2014-08-05 10:29 10人阅读 评论(0) 收藏 举报  二叉树的遍历有三种方式，如下： （1）前序遍历（DLR），首先访问根结点，然后遍历左子树，最后遍历右子树。简记根-左-右。 （2）中序遍历（LDR），首先遍历左子树，然后访问根结点，最后遍历右子树。简记左-根-右。 （3）后序遍历（LRD），首先遍历左子树，

S-Trees  A Strange Tree (S-tree) over the variable set is a binary tree representing a Boolean function . Each path of the S-tree begins at the root node and consists of n+1 node

Tree  You are to determine the value of the leaf node in a given binary tree that is the terminal node of a path of least value from the root of the binary tree to any leaf. The value of a

题意： 给出一颗二叉树的先序遍历，默认的中序遍历是1、2……n。给出q个询问，询问从根节点出发到某个点的路径。 解析： 就是构建一棵二叉搜索树，然后在二叉搜索树上面查找要查询的值，并输出路径。 mymy codecode#include <cstdio> #include <cstring> #include <algorithm> using namespace std; const in