Wei Qing (died 106 BC) was a military general of the Western Han dynasty whose campaigns against the Xiongnu earned him great acclaim. He was a relative of Emperor Wu because he was the younger half-brother of Empress Wei Zifu (Emperor Wu’s wife) and…

思路: 先二分下界,再二分上届. #include <bits/stdc++.h> using namespace std; #define MP make_pair #define PB push_back typedef long long LL; typedef pair<int,int> PII; ; const double pi=acos(-1.0); ; ; struct node { int x,y,w,h; node(){} node(int a,int b,in…

题目链接:https://icpcarchive.ecs.baylor.edu/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=5273 Wei Qing (died BC) was a military general of the Western Han dynasty whose campaigns against the Xiongnu earned him great acclaim.…

Wei Qing (died 106 BC) was a military general of the Western Han dynasty whose campaigns against the Xiongnu earned him great acclaim. He was a relative of Emperor Wu because he was the younger half-brother of Empress Wei Zifu (Emperor Wu’s wife) and…

拿到了icpc北京站的参赛名额 感谢亮哥~ 虽然是地狱之战 但也要全力以赴! 题意: 有一片沙漠 n片绿洲 让你用一条线分成两部分 左≥右 而且分割线要尽量靠右 问线的位置 思路: 网上说可以二分 没太看懂…… 还有一种思路就是线性扫描 将二维的图化成一维的线 然后从头扫一遍 遇到左≥sum/2时试探着向右继续扫 最后输出答案 不知道为啥hihocoder能过uvalive死活就是过不去…… #include<stdio.h> #include<iostream> #include…

题目传送门 题意:有多个矩形分布在[0, 0]到[R, R]的的范围内,画一条竖线分割成两块矩形,使得左边包括矩形的面积大于等于右边的面积,在这个前提下使得画的竖线尽量远 分析:二分答案,当面积相等时,判断再往右一个单位是否还可以相等,若不行则答案唯一确定,否则可以往右移动,即最后的竖线要不在一个矩形内或者在矩形边缘时最优. #include <bits/stdc++.h> using namespace std; typedef long long ll; const int N = 1e4…

2015区域赛北京赛区的三水,当时在赛场上没做出的原因是复杂度分析不正确导致把方法想复杂了.近来复习复杂度分析,觉得不能只是笼统地看渐进复杂度(big-O),更应根据算法的伪码计算真正的以基本操作数为变量的时间复杂度T(n). 题意:在二维坐标系第一象限中,将一块顶点在原点边长为R的正方形土地用直线x=n一分为二,左侧分给Wei,右侧分给Huo. 土地中包含N个绿洲,每个绿洲是一个矩形,其位置和大小用四元组(L,T,W,H)表示,其中(L,T)为其左上方顶点的坐标,W,H为其宽度和高度.绿洲互不…

题目链接:http://hihocoder.com/problemset/problem/1249 题目大意:有一个大正方形里面有好多不重叠的小矩形,怎么找出一条竖线分割这个正方形,使得两边的矩形面积尽量相等并且正方形左边的面积比右边大 思路:做两次二分就好了 #include <stdio.h> #include <iostream> #include <algorithm> using namespace std; #define xx first #define…

UVALive - 4108 SKYLINE Time Limit: 3000MS     64bit IO Format: %lld & %llu Submit Status uDebug Description   The skyline of Singapore as viewed from the Marina Promenade (shown on the left) is one of the iconic scenes of Singapore. Country X would a…

UVALive - 3942 Remember the Word A potentiometer, or potmeter for short, is an electronic device with a variable electric resistance. It has two terminals and some kind of control mechanism (often a dial, a wheel or a slide) with which the resistance…