There are n houses in the village and some bidirectional roads connecting them. Every day peole always like to ask like this "How far is it if I want to go from house A to house B"? Usually it hard to answer. But luckily int this village the ans
Problem Description 北宋末年,奸臣当道,宦官掌权,外侮日亟,辽军再犯.时下战火连连,烽烟四起,哀鸿遍野,民不聊生,又有众多能人异士群起而反,天下志士云集响应,景粮影从. 值此危急存亡之秋,在一个与世隔绝的地方-MCA山上一位江湖人称<英雄哪里出来>的人正在为抗击辽贼研究剑法,终于于一雷电交加之夜精确计算出了荡剑回锋的剑气伤害公式. 定义 f(x, y, m, n) = sqrt(x*x + y*y + m*m + n*n - 2*m*x - 2*n*y); hint : s
相应的openlayers的版本号为3.7. 主要用的接口是ol.Sphere.haversineDistance([x1,y1],[x2,y2]): 4326坐标系中计算两点距离的方式为: var wgs84Sphere = new ol.Sphere(6378137); wgs84Sphere.haversineDistance(C1,C2); 演示样例为: var wgs84Sphere = new ol.Sphere(6378137); wgs84Sphere.haversineDist
#include<iostream> #include<cstdio> using namespace std; int main() { double a, b, x, y; while (cin >> a && cin >> b && cin >> x && cin >> y) { double ans = sqrt((x - a)*(x - a) + (y - b)*(y - b)