Just a Hook Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 25126    Accepted Submission(s): 12545 Problem Description In the game of DotA, Pudge’s meat hook is actually the most horrible thing…

hdu1698 Just a Hook 题意:O(-1) 思路:O(-1) 线段树功能:update:成段替换 (由于只query一次总区间,所以可以直接输出1结点的信息) 题意:给一组棍子染色,不同的颜色有不同的值,执行一系列的区间染色后,问这组棍子的总值是多少. #include <cstdio> #include <algorithm> using namespace std; #define lson l , m , rt << 1 #define rson m…

最近刚学线段树,做了些经典题目来练手 Just a Hook Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 24370 Accepted Submission(s): 12156 Problem Description In the game of DotA, Pudge's meat hook is actually the most h…

题意 Q个操作,将l,r 的值改为w 问最后1,n的sum 为多少 成段更新(通常这对初学者来说是一道坎),需要用到延迟标记(或者说懒惰标记),简单来说就是每次更新的时候不要更新到底,用延迟标记使得更新延迟到下次需要更新or询问到的时候 题意:O(-1) 思路:O(-1) 线段树功能:update:成段替换 (由于只query一次总区间,所以可以直接输出1结点的信息) 线段:1-N(题目天然给出) 区间和性质:求sum 重点在于如何设计一个lazy操作 #include <cstdio> #i…

转载请注明出处:http://blog.csdn.net/u012860063 题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1698 Problem Description In the game of DotA, Pudge's meat hook is actually the most horrible thing for most of the heroes. The hook is made up of several consecut…

题目连接:http://acm.hdu.edu.cn/showproblem.php?pid=1698 线段树功能:update:成段替换 (由于只query一次总区间,所以可以直接输出1结点的信息) #pragma comment(linker,"/STACK:102400000,102400000") #include <cstdio> #include <cstring> #include <string> #include <cmath…

题目链接:https://vjudge.net/contest/66989#problem/E 坑爹的线段树照着上一个线段树更新写的,结果发现有一个地方就是不对,找了半天,发现是延迟更新标记加错了!!!以后一定要小心这一点 不用query,用value[1]也能ac,但是时间要的多,不知道是为什么,明明调用函数比较慢 #include<iostream> #include<cstdio> #include<cstring> #include<algorithm&g…

Just a Hook Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 13001    Accepted Submission(s): 6476 Problem Description In the game of DotA, Pudge’s meat hook is actually the most horrible thing…

学习线段树第二天,这道题属于第二简单的线段树,第一简单是单点更新,这个属于区间更新. 区间更新就是lazy思想,我来按照自己浅薄的理解谈谈lazy思想: 就是在数据结构中,树形结构可以线性存储(线性表)也可以树状存储(链表) 树形typedef struct node { int data; struct node* Lchild; struct node* Rchild; }Btree,*BTree;BTree = (BTree)malloc(Btree);好像是这样吧...大半个暑假过去忘得…

Just a Hook Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 34362    Accepted Submission(s): 16774 Problem Description In the game of DotA, Pudge’s meat hook is actually the most horrible thing…