PIGS Description Mirko works on a pig farm that consists of M locked pig-houses and Mirko can't unlock any pighouse because he doesn't have the keys. Customers come to the farm one after another. Each of them has keys to some pig-houses and wants to…

题目大意:是有M个猪圈,N个顾客,顾客要买猪,神奇的是顾客有一些猪圈的钥匙而主人MIRKO却没有钥匙,多么神奇?顾客可以在打开的猪圈购买任意数量的猪,只要猪圈里有足够数量的猪.而且当顾客打开猪圈后mirko就可以在打开的猪圈之间任意调整猪的数量,(顾客走了之后猪圈要关闭).问mirko怎样做能使顾客买到最多的猪 思路如下:(也是查的,具体原理和原因明天更新) 1.取超级源点和超级汇点: 2.当猪圈被第一次打开时,在源点与当前顾客之间连接一条边,容量为该猪圈的猪的头数: 3.当某个猪圈 不是被第一…

PIGS Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 20738   Accepted: 9481 Description Mirko works on a pig farm that consists of M locked pig-houses and Mirko can't unlock any pighouse because he doesn't have the keys. Customers come t…

Time Limit: 1000MS Memory Limit: 10000K Description Mirko works on a pig farm that consists of M locked pig-houses and Mirko can't unlock any pighouse because he doesn't have the keys. Customers come to the farm one after another. Each of them has ke…

Description Mirko works on a pig farm that consists of M locked pig-houses and Mirko can't unlock any pighouse because he doesn't have the keys. Customers come to the farm one after another. Each of them has keys to some pig-houses and wants to buy a…

PIGS Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 20579   Accepted: 9387 Description Mirko works on a pig farm that consists of M locked pig-houses and Mirko can't unlock any pighouse because he doesn't have the keys. Customers come t…

[题意] 有M个猪圈,每个猪圈里初始时有若干头猪.一开始所有猪圈都是关闭的.依 次来了N个顾客,每个顾客分别会打开指定的几个猪圈,从中买若干头猪.每 个顾客分别都有他能够买的数量的上限.每个顾客走后,他打开的那些猪圈中的 猪,都可以被任意地调换到其它开着的猪圈里,然后所有猪圈重新关上.问总共 最多能卖出多少头猪.(1 <= N <= 100, 1 <= M <= 1000) 非常好的一道网络流建模题!最大的收获就是: 在面对网络流问题时,如果一时想不出很好的构图方法,不如先构造一个…

PIGS Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 18727   Accepted: 8508 Description Mirko works on a pig farm that consists of M locked pig-houses and Mirko can't unlock any pighouse because he doesn't have the keys. Customers come t…

PIGS Time Limit: 1000ms Memory Limit: 10000KB This problem will be judged on PKU. 64-bit integer(整数) IO format: %lld      Java class name: Main   Mirko works on a pig farm that consists of M locked pig-houses and Mirko can't unlock any pighouse becau…

题目描述:迈克在一个养猪场工作,养猪场里有M 个猪圈,每个猪圈都上了锁.由于迈克没有钥匙,所以他不能打开任何一个猪圈.要买猪的顾客一个接一个来到养猪场,每个顾客有一些猪圈的钥匙,而且他们要买一定数量的猪.某一天,所有要到养猪场买猪的顾客,他们的信息是要提前让迈克知道的.这些信息包括:顾客所拥有的钥匙(详细到有几个猪圈的钥匙.有哪几个猪圈的钥匙).要购买的数量.这样对迈克很有好处,他可以安排销售计划以便卖出的猪的数目最大.更详细的销售过程:当每个顾客到来时,他将那些他拥有钥匙的猪圈全部打开:迈克从…