
图论-差分约束
图论
Stephencurry‘s csdn
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Is the Information Reliable? (POJ-2983)(差分约束-最短路模型+判负环)
The galaxy war between the Empire Draco and the Commonwealth of Zibu broke out 3 years ago. Draco established a line of defense called Grot. Grot is a straight line withNdefense stations. Because of...原创 2020-04-06 20:10:11 · 196 阅读 · 0 评论 -
Integer Intervals (POJ-1716)(差分约束-最短路模型)
An integer interval [a,b], a < b, is a set of all consecutive integers beginning with a and ending with b.Write a program that: finds the minimal number of elements in a set containing at least tw...原创 2020-04-06 18:10:48 · 227 阅读 · 0 评论 -
I - 动物狂想曲 (HDU-6252)(差分约束-最短路模型+判负环)
雷格西桑和路易桑是好朋友,在同一家公司工作。他们总是一起乘地铁去上班。他们的路线上有N个地铁站,编号从1到N。1站是他们的家,N站是公司。有一天,雷格西桑起床晚了。当他来到车站时,路易桑已经离开X分钟了。雷格西桑非常着急,于是他开始和路易桑聊天,交流他们的位置。内容是雷格西桑在A站和B站之间,路易桑在C站和D站之间。B等于A+ 1这意味着雷格西在A站和A+1之间, 或B等于A这意味着雷格西就是...原创 2020-04-06 11:48:52 · 268 阅读 · 0 评论 -
Intervals( POJ-1201) (差分约束-最长路模型)
You are given n closed, integer intervals [ai, bi] and n integers c1, ..., cn.Write a program that:reads the number of intervals, their end points and integers c1, ..., cn from the standard input,c...原创 2020-04-05 11:46:34 · 505 阅读 · 0 评论 -
House Man (HDU-3440) (差分约束-最短路模型+判负环)
In Fuzhou, there is a crazy super man. He can’t fly, but he could jump from housetop to housetop. Today he plans to use N houses to hone his house hopping skills. He will start at the shortest house a...原创 2020-04-05 10:56:53 · 223 阅读 · 0 评论 -
World Exhibition(HDU-3592) (差分约束-最短路模型+判负环)
Nowadays, many people want to go to Shanghai to visit the World Exhibition. So there are always a lot of people who are standing along a straight line waiting for entering. Assume that there are N (2 ...原创 2020-03-30 21:31:51 · 297 阅读 · 0 评论 -
P1993 小K的农场 (差分约束-最短/长路模型)
题目描述小 K 在 MC 里面建立很多很多的农场,总共n 个,以至于他自己都忘记了每个农场中种植作物的具体数量了,他只记得一些含糊的信息(共m 个),以下列三种形式描述:农场a 比农场b至少多种植了c个单位的作物; 农场a比农场b至多多种植了c 个单位的作物; 农场a与农场b种植的作物数一样多。但是,由于小 K 的记忆有些偏差,所以他想要知道存不存在一...原创 2020-03-30 18:37:30 · 200 阅读 · 0 评论 -
差分约束
转载自:http://www.cppblog.com/menjitianya/archive/2015/11/19/212292.html目录 一、引例 1、一类不等式组的解二、最短路 1、Dijkstra 2、图的存储 3、链式前向星 4、Dijkstra + 优先队列 5、Bellman-Ford...转载 2020-03-30 16:42:47 · 448 阅读 · 1 评论