hdu 1531 King

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hdu 1531 king（差分约束）

King Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 1645 Accepted Submission(s): 764 Problem Description Once, in one kingdom, there was a queen and that queen was expecting a baby. The quee…

首先吐槽一下这个题目的题意描述,我看了半天才明白. 下标全部都是乱标的!!!!出题者能不能规范一点下标的写法!!!! 差分约束系统 #include<cstdio> #include<cstring> #include<cmath> #include<vector> #include<queue> #include<algorithm> using namespace std; int n,m,tyu; ; const int INF…

hdu 1531(差分约束)

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1531 差分约束的题之前也碰到过,刚好最近正在进行图论专题的训练,就拿来做一做. ①:对于差分不等式,a - b <= c ,建一条 b 到 a 的权值为 c 的边,求的是最短路,得到的是最大值 ②:对于不等式 a - b >= c ,建一条 b 到 a 的权值为 c 的边,求的是最长路,得到的是最小值 ③:存在负环的话是无解 .④:求不出最短路(dist[ ]没有得到更新)的话是任意解说明一下为…

HDU 5642 King's Order dp

题目链接: http://acm.hdu.edu.cn/showproblem.php?pid=5642 King's Order Accepts: 381 Submissions: 1361 Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others) 问题描述国王演讲后士气大增,但此时战争还没有结束,国王时不时要下发命令. 由于国王的口吃并没有治愈,所以传令中可能出现:“让第三军-军…

HDU 5644 King's Pilots 费用流

King's Pilots 题目连接: http://acm.hdu.edu.cn/showproblem.php?pid=5644 Description The military parade will last for n days. There is a aerobatic flight shows everyday during the parade. On the ith day , Pi pilots are required. But the pilots are not wil…

HDU 5643 King's Game 打表

King's Game 题目连接: http://acm.hdu.edu.cn/showproblem.php?pid=5643 Description In order to remember history, King plans to play losephus problem in the parade gap.He calls n(1≤n≤5000) soldiers, counterclockwise in a circle, in label 1,2,3...n. The firs…

HDU 5642 King's Order 动态规划

King's Order 题目连接: http://acm.hdu.edu.cn/showproblem.php?pid=5642 Description After the king's speech , everyone is encouraged. But the war is not over. The king needs to give orders from time to time. But sometimes he can not speak things well. So i…