区域安全的check方法就是, 每行都有哨兵或者每列都有哨兵,然后我们用y建线段树, 维护在每个y上的哨兵的x的最值就好啦. #include<bits/stdc++.h> #define LL long long #define fi first #define se second #define mk make_pair #define PLL pair<LL, LL> #define PLI pair<LL, int> #define PII pair<in…

题意 你有一个无限大的绘图板,开始颜色是\(0\) , 你将进行\(n\) 次绘图,第\(i\) 次绘图会将左下角为 \((x_1, y_1)\),右上角为\((x_2, y_2)\) 的矩形涂成颜色\(i\). 问你最后能看到的颜色数量 ( 包括 0 ). \(n\le 10^5\) 分析 \(kd-tree\) 不好维护可行面积,所以考虑扫描线套线段树. 我们可以给每种颜色一个权值(出现的时间)表示他被看到的难易程度,出现时间越晚的颜色越容易被看到. 线段树上维护当前可以被看到的未出现的颜色…

E. Rooks and Rectangles Time Limit: 1 Sec  Memory Limit: 256 MB 题目连接 http://codeforces.com/problemset/problem/524/E Description Polycarpus has a chessboard of size n × m, where k rooks are placed. Polycarpus hasn't yet invented the rules of the game…

You are developing a software for painting rectangles on the screen. The software supports drawing several rectangles and filling some of them with a color different from the color of the background. You are to implement an important function. The fu…

题意: n * m的棋盘, k个位置有"rook"(车),q次询问,问是否询问的方块内是否每一行都有一个车或者每一列都有一个车? 满足一个即可 先考虑第一种情况, 第二种类似,swap一下就可以了. #include <bits/stdc++.h> using namespace std; ; inline int GetIdx(int l, int r){ return l + r | l != r; } ]; void update(int l, int r, int…

题意: n<=1e5,abs(x[i]),abs(y[i]<=1e9 思路:这是正解 离散后线段树强打,数据结构越学越傻 #include<cstdio> #include<cstring> #include<string> #include<cmath> #include<iostream> #include<algorithm> #include<map> #include<set> #incl…

原文链接 https://www.cnblogs.com/cly-none/p/CSA72G.html 题意:有一个\(n \times n\)的矩阵\(A\),\(m\)次操作,每次在\(A\)上三角部分的一个子矩形中加上一个数.最后构造\(n\)个点的图\(G\),且对于所有\(i,j \ (i < j)\),边\((i,j)\)的边权为\(A_{i,j}\).求图\(G\)的最小生成树的边权和. \(n,m \leq 10^5\) 先把上三角矩阵补成邻接矩阵.这样每次操作就是加两个邻接矩阵…

你看看你有多菜,一点线段树的小小的运用,就不会写了: 题意:如果矩阵有交集,输出1,否则输出0(不包含内嵌): 思路:本题求交集,还得不包括内嵌的情况: 做过一道是求面积的题.跟这道类似,但在这里定义的方式跟那道题定的相反. 这里把下面的线定为了-1,上面定为了1: 在这道题里,先把矩阵的横向边按上下两种储存在一个结构体里,上的权值为1,下的为-1: 然后离散化这些坐标(为浮点数的时候和数太大的时候都要离散化,太大的话线段树放不下) 所以用离散化后的x1,x2去更新线段树: 当更新的边为下边的时…

Atlantis Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 21734   Accepted: 8179 Description There are several ancient Greek texts that contain descriptions of the fabled island Atlantis. Some of these texts even include maps of parts of…

题目网址:http://acm.hust.edu.cn/vjudge/contest/view.action?cid=110064#problem/A Description There are several ancient Greek texts that contain descriptions of the fabled island Atlantis. Some of these texts even include maps of parts of the island. But u…

Atlantis Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 6116    Accepted Submission(s): 2677 Problem Description There are several ancient Greek texts that contain descriptions of the fabled i…

Atlantis Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 11551    Accepted Submission(s): 4906 Problem Description There are several ancient Greek texts that contain descriptions of the fabled…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1542 参考网址:http://blog.csdn.net/sunmenggmail/article/details/7984589 Problem Description There are several ancient Greek texts that contain descriptions of the fabled island Atlantis. Some of these texts…

http://acm.hdu.edu.cn/showproblem.php?pid=1828 Picture Time Limit: 6000/2000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 2135    Accepted Submission(s): 1134 Problem Description A number of rectangular posters,…

[题目] Atlantis Problem Description There are several ancient Greek texts that contain descriptions of the fabled island Atlantis. Some of these texts even include maps of parts of the island. But unfortunately, these maps describe different regions of…

Atlantis Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 10208    Accepted Submission(s): 4351 Problem Description There are several ancient Greek texts that contain descriptions of the fabled i…

Picture Time Limit: 6000/2000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 3897    Accepted Submission(s): 1978 Problem Description A number of rectangular posters, photographs and other pictures of the same shape…

 描述 There are several ancient Greek texts that contain descriptions of the fabled island Atlantis. Some of these texts even include maps of parts of the island. But unfortunately, these maps describe different regions of Atlantis. Your friend Bill ha…

Atlantis Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 21734   Accepted: 8179 Description There are several ancient Greek texts that contain descriptions of the fabled island Atlantis. Some of these texts even include maps of parts of…

Atlantis Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 9032    Accepted Submission(s): 3873 Problem Description There are several ancient Greek texts that contain descriptions of the fabled i…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1542 Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Problem Description There are several ancient Greek texts that contain descriptions of the fabled island Atlantis. So…

Atlantis 题目连接 http://poj.org/problem?id=1151 Description here are several ancient Greek texts that contain descriptions of the fabled island Atlantis. Some of these texts even include maps of parts of the island. But unfortunately, these maps describ…

版权声明:欢迎关注我的博客.本文为博主[炒饭君]原创文章,未经博主同意不得转载 https://blog.csdn.net/a1061747415/article/details/25471349 Problem A : Counting Squares pid=1264" rel="nofollow">From:HDU, 1264 Problem Description Your input is a series of rectangles, one per lin…

Atlantis Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 23181   Accepted: 8644 Description There are several ancient Greek texts that contain descriptions of the fabled island Atlantis. Some of these texts even include maps of parts of…

题目链接: Atlantis Time Limit: 2000/1000 MS (Java/Others)     Memory Limit: 65536/32768 K (Java/Others) Problem Description There are several ancient Greek texts that contain descriptions of the fabled island Atlantis. Some of these texts even include ma…

Description There are several ancient Greek texts that contain descriptions of the fabled island Atlantis. Some of these texts even include maps of parts of the island. But unfortunately, these maps describe different regions of Atlantis. Your friend…

题目链接:https://vjudge.net/problem/POJ-1177 A number of rectangular posters, photographs and other pictures of the same shape are pasted on a wall. Their sides are all vertical or horizontal. Each rectangle can be partially or totally covered by the oth…

题目链接:https://vjudge.net/problem/HDU-1542 There are several ancient Greek texts that contain descriptions of the fabled island Atlantis. Some of these texts even include maps of parts of the island. But unfortunately, these maps describe different reg…

Atlantis Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 8998    Accepted Submission(s): 3856 Problem Description There are several ancient Greek texts that contain descriptions of the fabled i…

Atlantis Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 11514    Accepted Submission(s): 4891 Problem Description There are several ancient Greek texts that contain descriptions of the fabled i…