题目大意: 给出的东西要求建立一个堆,使得后面的数字满足堆的性质.并且字符串满足搜索序 思路分析: 用线段树的最大询问建树.在建树之前先排序,然后用中序遍历递归输出. 注意输入的时候的技巧. .. #include <cstdio> #include <iostream> #include <cstring> #include <algorithm> #define lson num<<1,s,mid #define rson num<&l…

相应POJ 题目:点击打开链接 Binary Search Heap Construction Time Limit: 2000MS   Memory Limit: 30000K Total Submissions: 9075   Accepted: 2566 Description Read the statement of problem G for the definitions concerning trees. In the following we define the basic…

笛卡尔树: 每个节点有2个关键字key.value.从key的角度看,这是一颗二叉搜索树,每个节点的左子树的key都比它小,右子树都比它大:从value的角度看,这是一个堆. 题意:以字符串为关键字key,数字为关键字value,构造一个二叉搜索大堆,最后按要求中序遍历 笛卡尔树的构造. 建立笛卡尔树的O(n)的算法: 从别人博客里拷贝过来的,这里给出链接:http://hi.baidu.com/yy17yy/item/cd4edcf963944f6a3d148553 首先按key关键字进行排序…

先上题目: Binary Search Heap Construction Time Limit: 5 Seconds      Memory Limit: 32768 KB Read the statement of problem G for the definitions concerning trees. In the following we define the basic terminology of heaps. A heap is a tree whose internal n…

Code #include <cstdio> #include <algorithm> #include <cstring> #define N 500010 using namespace std; struct info{ int fix,l,r,fa; char s[10]; friend bool operator <(info a,info b){ return strcmp(a.s,b.s)<0; } void clear(){l=r=fa=0;…

此题可以先排序再用rmq递归解决. 当然可以用treap. http://poj.org/problem?id=1785 #include <cstdio> #include <cstring> #include <algorithm> using namespace std; ; struct Point{ ]; int pr; bool operator < (const Point& rhs) const{ ; } }a[maxn]; struct…

[POJ 2777] Count Color(线段树区间更新与查询) Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 40949   Accepted: 12366 Description Chosen Problem Solving and Program design as an optional course, you are required to solve all kinds of problems. Here…

POJ.3321 Apple Tree ( DFS序 线段树 单点更新 区间求和) 题意分析 卡卡屋前有一株苹果树,每年秋天,树上长了许多苹果.卡卡很喜欢苹果.树上有N个节点,卡卡给他们编号1到N,根的编号永远是1.每个节点上最多结一个苹果.卡卡想要了解某一个子树上一共结了多少苹果. 现在的问题是不断会有新的苹果长出来,卡卡也随时可能摘掉一个苹果吃掉.你能帮助卡卡吗? 前缀技能 边表存储树 DFS时间戳 线段树 首先利用边表将树存储下来,然后DFS打上时间戳.打上时间戳之后,我们就知道书上节点对…

[POJ 2750] Potted Flower(线段树套dp) Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 4566   Accepted: 1739 Description The little cat takes over the management of a new park. There is a large circular statue in the center of the park, surrou…

Description Read the statement of problem G for the definitions concerning trees. In the following we define the basic terminology of heaps. A heap is a tree whose internal nodes have each assigned a priority (a number) such that the priority of each…