比较简单的倍增 但还是看了题解才会 题意 给出一个 \(n\times m\) 的网格,每个格子有颜色,\(0\) 黑 \(1\) 白,每个格子还有一个方向,表示这个格子上的机器人会向那个方向走,并保证不会走出格子 摆放机器人,它们同时开始运动,在任意时刻不能有两个机器人在同一个格子里 先最大化机器人个数,如果多种方案机器人个数相等,再最大化摆在黑格子里的机器人数量 首先,这个路线肯定是循环的,如果不循环,就会走到无限多个格子,不合理 然后,对于任意一个格子,从那里开始走到完成一个完整的循环,步…

链接:http://www.bnuoj.com/bnuoj/problem_show.php?pid=25585 Current Server Time: 2013-08-27 20:42:26 Robots on a grid Time Limit: 3000ms Memory Limit: 65536KB   64-bit integer IO format: %lld      Java class name: Main Prev Submit Status Statistics Disc…

栅格地图算法:http://www.ikaros-project.org/articles/2008/gridmaps/…

indows Presentation Framework (WPF) gets a lot of mileage out of being layered on top of DirectX, including fast rendering, multimedia support, audio, video, and more. One of the features in the “more” category is the ability to easily use transforma…

Robots Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 3621 Accepted: 1643 Description Your company provides robots that can be used to pick up litter from fields after sporting events and concerts. Before robots are assigned to a job, an…

题目传送门 题目大意: 给出一张n*n的图,机器人在一秒钟内任一格子上都可以有五种操作,上下左右或者停顿,(不能出边界,不能碰到障碍物).题目给出k个障碍物,但保证没有障碍物的地方是强联通的,问经过无限长的时间后,停留在所有(x,y)(x+y>=n-1)的概率有多大. 思路: 概论题看上去很恐怖,但其实想到了就很简单. 先考虑没有障碍物的情况,由于是无限长的时间,那么最开始的时间机器人的走法是不会影响最终答案的,所以经过比较短的时间后,机器人可以出现在图上的任意地方,在这个时候到下一秒,机器人在…

6802 車的放置 0x60「图论」例题 描述 给定一个N行M列的棋盘,已知某些格子禁止放置.问棋盘上最多能放多少个不能互相攻击的車.車放在格子里,攻击范围与中国象棋的"車"一致.N,M≤200. 输入格式 第一行为n,m,t(表示有t个禁止的格子) 第二行到t+1行为x,y,分别表示禁止格子所在的位置,x为第x行,y为第y列,行列编号从1开始. 输出格式 一个整数,表示最多能放多少个車. 样例输入 8 8 0 样例输出 8 题解 把行.列看成节点 1要素:行节点.列节点只能放一个 0…

Robert is a famous engineer. One day he was given a task by his boss. The background of the task was the following: Given a map consisting of square blocks. There were three kinds of blocks: Wall, Grass, and Empty. His boss wanted to place as many ro…

Place the Robots Time Limit: 5 Seconds      Memory Limit: 32768 KB Robert is a famous engineer. One day he was given a task by his boss. The background of the task was the following: Given a map consisting of square blocks. There were three kinds of…

Vitaly works at the warehouse. The warehouse can be represented as a grid of n × m cells, each of which either is free or is occupied by a container. From every free cell it's possible to reach every other free cell by moving only through the cells s…