地址:http://acm.split.hdu.edu.cn/showproblem.php?pid=6121 题面: Build a tree Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 524288/524288 K (Java/Others)Total Submission(s): 1240 Accepted Submission(s): 509 Problem Description HazelFan wants…
Build a tree Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 524288/524288 K (Java/Others)Total Submission(s): 946 Accepted Submission(s): 369 Problem Description HazelFan wants to build a rooted tree. The tree has n nodes labeled 0 to n−1…
题目链接 Problem Description HazelFan wants to build a rooted tree. The tree has n nodes labeled 0 to n−1, and the father of the node labeled i is the node labeled ⌊i−1k⌋. HazelFan wonders the size of every subtree, and you just need to tell him the XOR…
HazelFan wants to build a rooted tree. The tree has nn nodes labeled 0 to n−1, and the father of the node labeled i is the node labeled . HazelFan wonders the size of every subtree, and you just need to tell him the XOR value of these answers. Input…
HDU6121 Build a tree 题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=6121 题目意思:一棵 n 个点的完全 k 叉树,结点标号从 0 到 n - 1,求以每一棵子树的大小的异或和. 思路:一层一层的算,附上我的灵魂画作 我们来模拟计算一下上面这个非完全k叉树所有子树的大小异或之和. 对于第四层对于以该层节点为根的子树的大小为1,我们发现这一层总共有12个这样的子树,所以ans+=0: 对于第三层对于以该层节点为根的子树的大小为…
1002 Build a tree(递归) 题目链接 HDU6121 Build a tree 有一棵n个点的有根树,标号为0到n-1,i号点的父亲是\(\lfloor\frac{i-1}{k}\rfloor\)号点,求所有子树大小的异或和.\(1\leq n,k\leq10^{18}\). 找出n所在的链,然后从根开始递归处理. k=1的时候特判,1异或到n,每4个异或起来为0. #include<bits/stdc++.h> #define ll long long using names…
One way to serialize a binary tree is to use pre-order traversal. When we encounter a non-null node, we record the node's value. If it is a null node, we record using a sentinel value such as #. _9_ / \ 3 2 / \ / \ 4 1 # 6 / \ / \ / \ # # # # # # For…
Red-Black trees are notorious for being nightmares of pointer manipulation. Instructors will show the theory, but won’t torture their students to implement one. Interviewers will avoid asking about it. They probably couldn’t do it themselves. You sho…
1064. Complete Binary Search Tree (30) 时间限制 100 ms 内存限制 32000 kB 代码长度限制 16000 B 判题程序 Standard 作者 CHEN, Yue A Binary Search Tree (BST) is recursively defined as a binary tree which has the following properties: The left subtree of a node contains only…
the problem is from pat,which website is http://pat.zju.edu.cn/contests/pat-a-practise/1020 and the source code is as followed. #include<iostream> #include<cstdlib> #include<queue> using namespace std; ; typedef struct Tree { Tree *le; T…
Tree Maker Problem Description Tree Lover loves trees crazily. One day he invents an interesting game which is named Tree Maker. In this game, all trees are binary trees. Initially, there is a tree with only one vertex and a cursor on it. Tree Lover…
An inorder binary tree traversal can be implemented in a non-recursive way with a stack. For example, suppose that when a 6-node binary tree (with the keys numbered from 1 to 6) is traversed, the stack operations are: push(1); push(2); push(3); pop()…