#include <cstdio> #include <cstring> #include <cmath> #include <algorithm> #define maxn 2000 using namespace std; const double pi=acos(-1.0); int main() { double v,a,k; scanf("%lf%lf%lf",&v,&a,&k); ; a=a*pi/;…

2063. Black and White Time limit: 1.0 secondMemory limit: 64 MB Let’s play a game. You are given a row of n balls, each ball is either black or white. Their positions in a row are numbered from 1 to n. You know the total number of balls n, but have n…

1075. Thread in a Space Time limit: 1.0 secondMemory limit: 64 MB There are three points in a 3-dimensional space: A, B and C. All the coordinates of the points are integer numbers with absolute values not greater than 1000. A solid ball with a cente…

1269. Obscene Words Filter Time limit: 0.5 secondMemory limit: 8 MB There is a problem to check messages of web-board visitors for the obscene words. Your elder colleagues commit this problem to you. You are to write a program, which check if there i…

1217. Unlucky Tickets Time limit: 1.0 secondMemory limit: 64 MB Strange people live in Moscow! Each time in the bus, getting a ticket with a 6-digit number, they try to sum up the first half of digits and the last half of digits. If these two sums ar…

有一个筒,从A口可以放球,放进去的球可通过挡板DE使其掉进B管或C管里,现有带1-10标号的球按给定顺序从A口放入,问是否有一种控制挡板的策略可以使B管和C管中的球从下往上标号递增. 输入: 第一行输入数据组数N.接下来N行为N组具体数据,每组数据中有10个整数,代表球的放入顺序. 输出: 对于每组数据,若策略存在,输出YES:若不存在,输出NO 解法1:DFS 思路:每次判断当前小球是否大于左边容器的最上端的小球,如果可以就放,否则再去看右边的.一旦发现左右两边都不能放,那就只能判定是NO了.…

    今年双十一淘宝推出了虚拟现实VR购物"BUY+",用户可以在虚拟环境中选购商品.那作为竞争对手的京东将使出什么绝招呢?在近日上海举办的谷歌开发者大会上得到了答案.会上京东推出了一款基于谷歌Tangao技术开发的国内首款AR购物应用.       这款名为JD Dream的AR应用吸引了无数人的目光,来自谷歌的工程师现场演示了JD Dream中AR购物的功能.目前这部分功能针对于家居家装,用户可挑选该场馆中的虚拟家居产品,并在手机上看到真实空间中1:1的摆放效果.用户可移动和旋转…

function Ball(message){ alert(message); }; var ball0=new Ball("executing"); //var ball0=new Ball("executing"); //上面这行代码等价于下面的过程var ball0=new Object(); ball0.construct=Ball;//将属性construct指向代码片段Ball code ball0.construct("executing&q…

状压DP Description Squares and rectangles fascinated the famous Dutch painter Piet Mondriaan. One night, after producing the drawings in his 'toilet series' (where he had to use his toilet paper to draw on, for all of his paper was filled with squares…

反复听着Dream It Possible,想起自己的华为岁月,百感交集!…