Transmitters Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 4955 Accepted: 2624 Description In a wireless network with multiple transmitters sending on the same frequencies, it is often a requirement that signals don't overlap, or at…
Poj 1106 Transmitters 传送门 给出一个半圆,可以任意旋转,问这个半圆能够覆盖的最多点数. 我们枚举每一个点作为必然覆盖点,那么使用叉积看极角关系即可判断其余的点是否能够与其存在一个半圆内 import java.io.*; import java.util.*; public class Main { static class Point implements Comparable<Point> { double x, y; @Override public int co…
环绕底边中点旋转 UIView本身是支持旋转的,能够用UIView.transform属性实现旋转. The origin of the transform is the value of the center property, or the layer's anchorPoint property if it was changed. 这个旋转默认是环绕这UIView.center或者UIView.layer.anchorPoint旋转的. 似乎UIV…
http://poj.org/problem?id=1106 Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 4488 Accepted: 2379 Description In a wireless network with multiple transmitters sending on the same frequencies, it is often a requirement that signals don…
http://poj.org/problem?id=3020 Antenna Placement Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 7565 Accepted: 3758 Description The Global Aerial Research Centre has been allotted the task of building the fifth generation of mobile ph…
