Finding Mine Time Limit: 6000/3000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 1120 Accepted Submission(s): 298 Problem Description In bitland, there is an area with M gold mines. As a businessman, Bob wants t
Little Petya likes to draw. He drew N red and M blue points on the plane in such a way that no three points lie on the same line. Now he wonders what is the number of distinct triangles with vertices in red points which do not contain any blue point
Triangle containment Three distinct points are plotted at random on a Cartesian plane, for which -1000 ≤ x, y ≤ 1000, such that a triangle is formed. Consider the following two triangles: A(-340,495), B(-153,-910), C(835,-947)X(-175,41), Y(-421,-714)
Hogwarts is under attack by the Dark Lord, He-Who-Must-Not-Be-Named. To protect the students, Harry Potter must cast protective spells so that those who are protected by the spells cannot be attacked by the Dark Lord. Harry has asked all the students
A题 喵哈哈村的数据筛选游戏 题解:这道题签到题,拿个数组记录一下这个数是否出现过即可. #include<bits/stdc++.h> using namespace std; const int maxn = 1e5+5; int vis[maxn]; int n; int a[maxn]; int main(){ while(cin>>n){ memset(vis,0,sizeof(vis)); for(int i=0;i<n;i++){ cin>>a[i]
原文详见http://away3d.com/tutorials/Introduction_to_Mouse_Picking.本文若有翻译不对的地方,敬请指出. 本教程详细介绍了Away3D 4.x中鼠标交互问题. 内容: n 介绍 n Hello Picking n Entity属性 n View属性 n UV绘制 n 总结 介绍 每个3D引擎都需要解决一个非常基础的问题:鼠标下面是什么?在3D图形学中,这通常会涉及到拾取.虽然这个问题看似简单.直接,但它实际上涉及到较难的数学和非常