传送门 把所有非障碍的相邻格子彼此连一条边,然后求二分图最大匹配,看 tot * 2 + k 是否等于 n * m 即可. 但是连边不能重复,比如 a 格子 和 b 格子 相邻,不能 a 连 b ,b 也连 a. 所以可以人为规定,横纵坐标相加为 奇数 的格子连横纵坐标相加为 偶数 的格子. 如果一个格子横纵坐标相加为奇数,那么它的上下左右四个格子横纵坐标相加必定为偶数. ——代码 #include <cstdio> #include <cstring> using namespa…
题目 Source http://www.lightoj.com/volume_showproblem.php?problem=1171 Description Given an m x n chessboard where some of the cells are broken. Now you are about to place chess knights in the chessboard. You have to find the maximum number of knights…
A. DZY Loves Chessboard time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output DZY loves chessboard, and he enjoys playing with it. He has a chessboard of n rows and m columns. Some cells of the c…
状压DP... Kings on a Chessboard Time Limit: 10000ms Memory Limit: 65535KB This problem will be judged on UESTC. Original ID: 185164-bit integer IO format: %lld Java class name: Main Prev Submit Status Statistics Discuss Next Font Size: + - Type: …
题目 Source http://acm.hust.edu.cn/vjudge/problem/42145 Description Let’s assume there is a new chess piece named Super-rook. When placed at a cell of a chessboard, it attacks all the cells that belong to the same row or same column. Additionally it at…
Chessboard Time Limit: 2000MS Memory Limit: 65536K Total Submissions: 12800 Accepted: 4000 Description Alice and Bob often play games on chessboard. One day, Alice draws a board with size M * N. She wants Bob to use a lot of cards with size 1 * 2…
DZY Loves Chessboard time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output DZY loves chessboard, and he enjoys playing with it. He has a chessboard of n rows and m columns. Some cells of the ches…
DescriptionDZY loves chessboard, and he enjoys playing with it. He has a chessboard of n rows and m columns. Some cells of the chessboard are bad, others are good. For every good cell, DZY wants to put a chessman on it. Each chessman is either white…
一道数学水题,找找规律. 首先要判断给的数在第几层,比如说在第n层.然后判断(n * n - n + 1)(其坐标也就是(n,n)) 之间的关系. 还要注意n的奇偶. Problem A.Ant on a Chessboard Background One day, an ant called Alice came to an M*M chessboard. She wanted to go around all the grids. So she began to walk along t…
A. DZY Loves Chessboard time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output DZY loves chessboard, and he enjoys playing with it. He has a chessboard of n rows and m columns. Some cells of the c…
Chessboard Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 919 Accepted Submission(s): 390 Problem Description Consider the problem of tiling an n×n chessboard by polyomino pieces that are k…
Given an m x n chessboard where you want to place chess knights. You have to find the number of maximum knights that can be placed in the chessboard such that no two knights attack each other. Those who are not familiar with chess knights, note that…
A. DZY Loves Chessboard time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output DZY loves chessboard, and he enjoys playing with it. He has a chessboard of n rows and m columns. Some cells of the c…
Problem A.Ant on a Chessboard Background One day, an ant called Alice came to an M*M chessboard. She wanted to go around all the grids. So she began to walk along the chessboard according to this way: (you can assume that her speed is one grid per se…
Chessboard Time Limit: 2000MS Memory Limit: 65536K Total Submissions: 13176 Accepted: 4118 Description Alice and Bob often play games on chessboard. One day, Alice draws a board with size M * N. She wants Bob to use a lot of cards with size 1 * 2…
On an NxN chessboard, a knight starts at the r-th row and c-th column and attempts to make exactly K moves. The rows and columns are 0 indexed, so the top-left square is (0, 0), and the bottom-right square is (N-1, N-1). A chess knight has 8 possible…
本文是博主原创文章,未经允许不得转载. 我在csdn也同步发布了此文,链接 https://blog.csdn.net/umbrellalalalala/article/details/79892253 题目来源 http://codeforces.com/problemset/problem/961/C [题目](看不懂可以往下翻,有翻译) Magnus decided to play a classic chess game. Though what he saw in his locker…
On an NxN chessboard, a knight starts at the r-th row and c-th column and attempts to make exactly K moves. The rows and columns are 0 indexed, so the top-left square is (0, 0), and the bottom-right square is (N-1, N-1). A chess knight has 8 possible…
An N x N board contains only 0s and 1s. In each move, you can swap any 2 rows with each other, or any 2 columns with each other. What is the minimum number of moves to transform the board into a "chessboard" - a board where no 0s and no 1s are 4…
An N x N board contains only 0s and 1s. In each move, you can swap any 2 rows with each other, or any 2 columns with each other. What is the minimum number of moves to transform the board into a "chessboard" - a board where no 0s and no 1s are 4…
［抄题］: On an NxN chessboard, a knight starts at the r-th row and c-th column and attempts to make exactly Kmoves. The rows and columns are 0 indexed, so the top-left square is (0, 0), and the bottom-right square is (N-1, N-1). A chess knight has 8 pos…
Uva10161 Ant on a Chessboard 10161 Ant on a Chessboard One day, an ant called Alice came to an M*M chessboard. She wanted to go around all the grids. So she began to walk along the chessboard according to this way: (you can assume that her speed is o…
