题意:给定上一个二维矩阵,有两种操作 第一种是修改 c x y val 把(x, y) 改成 val 第二种是查询 q x1 y1 x2 y2 查询这个矩形内的最大值和最小值. 析:二维线段树裸板. 代码如下: #pragma comment(linker, "/STACK:1024000000,1024000000") #include <cstdio> #include <string> #include <cstdlib> #include &…

[题目分析] 二维线段树模板题目. 简直就是无比的暴力.时间复杂度为两个log. 标记的更新方式比较奇特,空间复杂度为N^2. 模板题目. [代码] #include <cstdio> #include <cstring> //#include <cmath> #include <cstdlib> #include <map> #include <set> #include <queue> #include <str…

Description This year, there have been many problems with population calculations, since in some cities, there are many emigrants, or the population growth is very high. Every year the ACM (for Association for Counting Members) conducts a census in e…

题目大意: 就是在二维的空间内进行单个的修改,或者进行整块矩形区域的最大最小值查询 二维线段树树,要注意的是第一维上不是叶子形成的第二维线段树和叶子形成的第二维线段树要  不同的处理方式,非叶子形成的线段树总是在自身的叶子处不能直接更新数据,而是要以一维下他的左右孩子对应的位置数据进行更新. #include <bits/stdc++.h> using namespace std; #define N 505 #define ls o<<1 #define rs o<<…

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&…

之前只知道这个东西的大概概念,没具体去写,最近呵呵,今补上. 二维线段树 -- 点更段查 #include <cstdio> #include <cstring> #include <iostream> using namespace std; int N,M; double ma[110<<2][1010<<2]; void pushUpY(int xu,int u){ ma[xu][u]=max(ma[xu][u<<1], ma[…

Matrix Time Limit: 3000MS   Memory Limit: 65536K Total Submissions: 17880   Accepted: 6709 Description Given an N*N matrix A, whose elements are either 0 or 1. A[i, j] means the number in the i-th row and j-th column. Initially we have A[i, j] = 0 (1…

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…

Matrix Time Limit: 3000MS   Memory Limit: 65536K Total Submissions: 17226   Accepted: 6461 Description Given an N*N matrix A, whose elements are either 0 or 1. A[i, j] means the number in the i-th row and j-th column. Initially we have A[i, j] = 0 (1…

Mosaic Time Limit: 10000/5000 MS (Java/Others)    Memory Limit: 102400/102400 K (Java/Others)Total Submission(s): 213    Accepted Submission(s): 50 Problem Description The God of sheep decides to pixelate some pictures (i.e., change them into picture…