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 http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemCode=1654 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: G…
题目链接:http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemId=654 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…
Description There are two rows of positive integer numbers. We can draw one line segment between any two equal numbers, with values r, if one of them is located in the first row and the other one is located in the second row. We call this line segmen…
一般图最大匹配带花树: 建图后,计算最大匹配数. 假设有一个联通块不是完美匹配,先手就能够走那个没被匹配到的点.后手不论怎么走,都必定走到一个被匹配的点上.先手就能够顺着这个交错路走下去,最后一定是后手没有路可走,由于假设还有路可走,这一条交错路,就是一个增广路,必定有更大的匹配. Game Time Limit: 1 Second Memory Limit: 32768 KB Fire and Lam are addicted to the game of Go recently.…
