Hdu5093 Battle ships 二分图】的更多相关文章

Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 1091    Accepted Submission(s): 395 Problem Description Dear contestant, now you are an excellent navy commander, who is responsible of a tough mi…
二分图匹配: 分别按行和列把图展开.hungary二分图匹配. ... 例子: 4 4 *ooo o### **#* ooo* 按行展开. .. . *ooo o#oo oo#o ooo# **#o ooo* ooo* 再按列展开... 7 * 8 *ooooooo oooooooo oooooooo oooooooo *o*ooooo ooooooo* ooooooo* 匹配结果3 Battle ships Time Limit: 2000/1000 MS (Java/Others)    M…
Battle ships Problem DescriptionDear contestant, now you are an excellent navy commander, who is responsible of a tough mission currently.Your fleet unfortunately encountered an enemy fleet near the South Pole where the geographical conditions are ne…
Battle ships Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others) Total Submission(s): 1007    Accepted Submission(s): 353 Problem Description Dear contestant, now you are an excellent navy commander, who is responsible…
题意:一个m行n列的图由#.*.o三种符号组成,分别代表冰山.海域.浮冰,问最多可放的炮舰数(要求满足以下条件) 1.炮舰只可放在海域处 2.两个炮舰不能放在同一行或同一列(除非中间隔着一个或多个冰山) 分析: 1.如果单纯只考虑不能放在同一行同一列,那就是行号与列号的匹配,原理与UVALive 6811 Irrigation Line(二分图最小点覆盖--匈牙利算法)相同. 2.但现在隔着冰山可以放置炮舰,那假设某一行被冰山分隔成两部分,这一行的前半部分和后半部分可以看做是两行,再应用"行号&…
题目:pid=5093" target="_blank">hdoj 5093 Battle ships 题意:给你一个n*m的图,图中有冰山 '# ',浮冰 'o' 以及普通海 ' * ',如今要在海中布置尽可能多的炮弹.炮弹不能突波冰山,不能让炮弹互相攻击到.问最大能不知多少个? 分析:二分图的经典题目.关键在于怎么建图,图进行两次编号,按行编号,每一行中能攻击到的一块编号成相同的数,每一列相同.然后对行和列有编号的地方进行连边,求一次最大匹配就可以,我用最大流求的最…
传送门 D. One-Dimensional Battle Ships time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Alice and Bob love playing one-dimensional battle ships. They play on the field in the form of a line con…
D. One-Dimensional Battle ShipsTime Limit: 2 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/567/problem/D Description Alice and Bob love playing one-dimensional battle ships. They play on the field in the form of a line consisting of n s…
D. One-Dimensional Battle ShipsTime Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/567/problem/D Description Alice and Bob love playing one-dimensional battle ships. They play on the field in the form of a line consisting of n …
Battle Ships Time Limit: 2 Seconds      Memory Limit: 65536 KB Battle Ships is a new game which is similar to Star Craft. In this game, the enemy builds a defense tower, which has L longevity. The player has a military factory, which can produce N ki…