Manhattan Rectangle 链接 题意: 交互题,询问小于7次,确定一个矩形的位置,每次询问一个点到矩形的曼哈顿距离. 分析: 询问三个顶点,然后解一下方程,求出一个边界,就好办了. 用scanf和printf会TLE? 代码: #include<cstdio> #include<algorithm> #include<cstring> #include<iostream> #include<cmath> #include<cc…

题目传送门 题解:现在需要维护的每次的询问矩形和前面插入的所有矩形有公共部分的个数. 我们试着直接去维护这个东西, 发现可能的情况太多,不好维护,所以我们维护每次询问的时候在当前矩阵个数下,有多少个矩阵是一定在外面的.对于一个矩阵来说, 我们只需要统计到目前位置, 多少个矩形的下底线 在询问矩形的上底线之上, 这样我们就减去了在询问矩形上方的不重合矩形. 然后我们对矩形的左右下也一样维护这个信息.对于这个操作我们可以用4个树状数组直接去维护这个信息.每个数状数组记录一下每条底线出现的位置. 维护…

Given N axis-aligned rectangles where N > 0, determine if they all together form an exact cover of a rectangular region. Each rectangle is represented as a bottom-left point and a top-right point. For example, a unit square is represented as [1,1,2,2…

Given a non-empty 2D matrix matrix and an integer k, find the max sum of a rectangle in the matrix such that its sum is no larger than k. Example: Given matrix = [ [1, 0, 1], [0, -2, 3] ] k = 2 The answer is 2. Because the sum of rectangle [[0, 1], […

An image is represented by a binary matrix with 0 as a white pixel and 1 as a black pixel. The black pixels are connected, i.e., there is only one black region. Pixels are connected horizontally and vertically. Given the location (x, y) of one of the…

Find the total area covered by two rectilinear rectangles in a2D plane. Each rectangle is defined by its bottom left corner and top right corner as shown in the figure. Assume that the total area is never beyond the maximum possible value of int. Cre…

Given a 2D binary matrix filled with 0's and 1's, find the largest rectangle containing all ones and return its area. 此题是之前那道的Largest Rectangle in Histogram 直方图中最大的矩形 的扩展,这道题的二维矩阵每一层向上都可以看做一个直方图,输入矩阵有多少行,就可以形成多少个直方图,对每个直方图都调用Largest Rectangle in Hist…

Given n non-negative integers representing the histogram's bar height where the width of each bar is 1, find the area of largest rectangle in the histogram. Above is a histogram where width of each bar is 1, given height = [2,1,5,6,2,3]. The largest…

3514: Codechef MARCH14 GERALD07加强版 Time Limit: 60 Sec  Memory Limit: 256 MBSubmit: 1288  Solved: 490[Submit][Status][Discuss] Description N个点M条边的无向图,询问保留图中编号在[l,r]的边的时候图中的联通块个数. Input 第一行四个整数N.M.K.type,代表点数.边数.询问数以及询问是否加密.接下来M行,代表图中的每条边.接下来K行,每行两个整数L…

很不好想的一道题,参考:http://blog.csdn.net/doc_sgl/article/details/11832965 分为两步:把原矩阵转为直方图,再用largest rectangle求解:http://www.cnblogs.com/573177885qq/p/5537334.html int largestRectangleArea(vector<int>& heights) { stack<int> s; heights.push_back(); ;…