hdu1823 题意 单点更新,求二维区间最值. 分析 二维线段树模板题. 二维线段树实际上就是树套树,即每个结点都要再建一颗线段树,维护对应的信息. 一般一维线段树是切割某一可变区间直到满足所要查询区间,求最值.求和等,二维就是先切割第一维的区间,再去切割第二维的区间. code #include<bits/stdc++.h> using namespace std; #define lson l, m, rt << 1 #define rson m + 1, r, rt <…

/* HDU 4819 Mosaic 题意:查询某个矩形内的最大最小值, 修改矩形内某点的值为该矩形(Mi+MA)/2; 二维线段树模板: 区间最值,单点更新. */ #include<bits/stdc++.h> using namespace std; const int INF = 0x3f3f3f3f; ; int N, Q; struct Nodey { int l, r; int Max, Min; }; int locx[MAXN], locy[MAXN]; struct Nod…

题目链接 二维树状数组 #include<iostream> #include<math.h> #include<algorithm> #include<stdlib.h> using namespace std; #define ll long long #define re(i,n) for(int i=0;i<n;i++) ; int c[maxn][maxn]; int n, q; int lowbit(int x){ return x&…

Mosaic Time Limit: 10000/5000 MS (Java/Others)    Memory Limit: 102400/102400 K (Java/Others)Total Submission(s): 904    Accepted Submission(s): 394 Problem Description The God of sheep decides to pixelate some pictures (i.e., change them into pictur…

解题关键:二维线段树模板题(单点修改.查询max) #include<cstdio> #include<cstring> #include<algorithm> #include<cstdlib> #include<iostream> #include<cmath> using namespace std; typedef long long ll; #define lson rt<<1,l,mid #define rso…

思路: 二维线段树模板题,马克一下,以后当模板用 代码: #include<cstdio> #include<cmath> #include<cstring> #include<iostream> #include<algorithm> #define ll long long using namespace std; const int N = 1024+5; int MAX[N<<2][N<<2],MIN[N<&…

Luck and Love Time Limit: 10000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 50 Accepted Submission(s): 20   Problem Description 世界上上最远的距离不是相隔天涯海角而是我在你面前可你却不知道我爱你                ―― 张小娴 前段日子,枫冰叶子给Wiskey做了个征婚启事,聘…

Mobile phones Time Limit: 5000MS   Memory Limit: 65536K Total Submissions: 14391   Accepted: 6685 Description Suppose that the fourth generation mobile phone base stations in the Tampere area operate as follows. The area is divided into squares. The…

Luck and Love Time Limit: 10000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 54 Accepted Submission(s): 21   Problem Description 世界上上最远的距离不是相隔天涯海角而是我在你面前可你却不知道我爱你                ―― 张小娴 前段日子,枫冰叶子给Wiskey做了个征婚启事,聘…

点击打开链接 Luck and Love Time Limit: 10000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 5460    Accepted Submission(s): 1364 Problem Description 世界上上最远的距离不是相隔天涯海角 而是我在你面前 可你却不知道我爱你                 ―― 张小娴 前段日子,枫冰…