考虑将$(2i-1,2j-1)$和$(2i,2j)$缩为一个点,记作$(i,j)$ 对于每一个点,只能选$(2i-1,2j-1)$或$(2i,2j)$(显然不能都选),而这样恰好为$nm$个,因此必须要至少选择一个 对于每一个点,障碍的状态分为以下几类: 1.无障碍,这类点暂时不考虑 2.都有障碍,若存在此类点必然不合法 3.有一个障碍,分两类讨论: (1)$(2i-1,2j-1)$上有障碍,即这个点只能选$(2i,2j)$,考虑$(i+1,j)$和$(i,j+1)$,也只能选这个点,因此即对于…

Aeroplane chess Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 1597    Accepted Submission(s): 1088 Problem Description Hzz loves aeroplane chess very much. The chess map contains N+1 grids lab…

Chess Problem Description   Alice and Bob are playing a special chess game on an n × 20 chessboard. There are several chesses on the chessboard. They can move one chess in one turn. If there are no other chesses on the right adjacent block of the mov…

A Chess Game Time Limit: 3000MS   Memory Limit: 65536K Total Submissions: 3917   Accepted: 1596 Description Let's design a new chess game. There are N positions to hold M chesses in this game. Multiple chesses can be located in the same position. The…

Chess Time Limit: 6000/3000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 24    Accepted Submission(s): 10 Problem Description 小度和小良最近又迷上了下棋.棋盘一共有N行M列,我们可以把左上角的格子定为(1,1),右下角的格子定为(N,M).在他们的规则中,“王”在棋盘上的走法遵循十字路线.也就是说,…

2016暑假多校联合---A Simple Chess   Problem Description There is a n×m board, a chess want to go to the position (n,m) from the position (1,1).The chess is able to go to position (x2,y2) from the position (x1,y1), only and if only x1,y1,x2,y2 is satisfied…

题目 Source http://acm.hdu.edu.cn/showproblem.php?pid=5724 Description Alice and Bob are playing a special chess game on an n × 20 chessboard. There are several chesses on the chessboard. They can move one chess in one turn. If there are no other chess…

AOJ 0558 Chess http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=0558    在H * W的地图上有N个奶酪工厂,每个工厂分别生产硬度为1-N的奶酪.有一只老鼠准备从出发点吃遍每一个工厂的奶酪.老鼠有一个体力值,初始时为1,每吃一个工厂的奶酪体力值增加1(每个工厂只能吃一次),且老鼠只能吃硬度不大于当前体力值的奶酪. 老鼠从当前格到上下左右相邻的无障碍物的格需要时间1单位,有障碍物的格不能走.走到工厂上时即可吃到该…

319. Kalevich Strikes Back Time limit per test: 0.5 second(s)Memory limit: 65536 kilobytes input: standardoutput: standard And yet again the Berland community can see that talent is always multi-sided. The talent is always seeking new ways of self-ex…

D. Anton and Chess 题目连接: http://codeforces.com/contest/734/problem/D Description Anton likes to play chess. Also, he likes to do programming. That is why he decided to write the program that plays chess. However, he finds the game on 8 to 8 board to…