目录 List Description Input Output Sample Input Sample Output HINT Solution Code Position: http://poj.org/problem?id=1325 List Description 我们知道机器调度是计算机科学中一个非常经典的问题.调度问题有很多种,具体条件不同,问题就不同.现在我们要处理的是两个机器的调度问题. 有两个机器A和B.机器A有n种工作模式,我们称之为mode_0,mode_l,--,mode…

Machine Schedule Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 11958   Accepted: 5094 Description As we all know, machine scheduling is a very classical problem in computer science and has been studied for a very long history. Scheduli…

Machine Schedule Time Limit: 1000MS   Memory Limit: 10000K       Description As we all know, machine scheduling is a very classical problem in computer science and has been studied for a very long history. Scheduling problems differ widely in the nat…

传送门 Description As we all know, machine scheduling is a very classical problem in computer science and has been studied for a very long history. Scheduling problems differ widely in the nature of the constraints that must be satisfied and the type of…

Description As we all know, machine scheduling is a very classical problem in computer science and has been studied for a very long history. Scheduling problems differ widely in the nature of the constraints that must be satisfied and the type of sch…

POJ-1325 题意: 有两台机器A,B,分别有n,m种模式,初始都在0模式,现在有k项任务,每项任务要求A或者B调到对应的模式才能完成.问最少要给机器A,B调多少次模式可以完成任务. 思路: 相当于是在以n.m个点构成的二分图中,求二分图的最小顶点覆盖数(就是每个任务都涉及到,所需的顶点数).根据Konig定理,二分图的最小顶点覆盖数就是求最大匹配数,注意这里是Base 0的,就是初始不用调整模式就可以完成0模式的任务,所以读入的时候不用考虑与0相连的边. #include <algorit…

最小点覆盖集就是在一个有向图中选出最少的点集,使其覆盖所有的边. 二分图最小点覆盖集=二分图最大匹配(二分图最大边独立集) 这题A机器的n种模式作为X部的点,B机器的m种模式作为Y部的点: 每个任务就作为边,端点是可以完成它的A和B的某个模式. 这样,问题就变成在这个二分图中取出最少的点覆盖所有的边. 此外,因为开始机器都是在初始在0模式下的,所以所有可以在0模式完成的任务一开始就让它们完成这样就不需要切换模式. #include<cstdio> #include<cstring>…

Machine Schedule Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 17454   Accepted: 7327 Description As we all know, machine scheduling is a very classical problem in computer science and has been studied for a very long history. Scheduli…

Machine Schedule Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 13731   Accepted: 5873 Description As we all know, machine scheduling is a very classical problem in computer science and has been studied for a very long history. Scheduli…

Machine Schedule Time Limit: 1 Sec  Memory Limit: 256 MB 题目连接 http://acm.hdu.edu.cn/showproblem.php?pid=1150 Description As we all know, machine scheduling is a very classical problem in computer science and has been studied for a very long history.…

Machine Schedule Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 4122    Accepted Submission(s): 2005 Problem DescriptionAs we all know, machine scheduling is a very classical problem in compute…

题目大意:机器调度问题,同一个任务可以在A,B两台不同的机器上以不同的模式完成.机器的初始模式是mode_0,但从任何模式改变成另一个模式需要重启机器.求完成所有工作所需最少重启次数. =================================================== 对于任务(i,x,y),我们在A机mode_x与B机mode_y之间连一条边.这样,题目就变成了一个二分图,我们的目的是完成所有任务,即覆盖所有线段,题目要求选择最少的点,使得每个线段至少有一个端点被选中(这个…

pid=1150">Machine Schedule Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 5424    Accepted Submission(s): 2691 Problem Description As we all know, machine scheduling is a very classical pro…

题目地址:UVA1194 Machine Schedule 二分图最小覆盖模型的要素 每条边有两个端点,二者至少选择一个.简称 \(2\) 要素. \(2\) 要素在本题中的体现 每个任务要么在 \(A\) 上以 \(a_i\) 模式执行,要么在机器 \(B\) 上以 \(b_i\) 模式执行. 把 \(A,B\) 的 \(m\) 种模式分别作为 \(m\) 个左部点和右部点,每个任务作为边连接左部 \(a_i\) 节点和右部 \(b_i\) 节点. 求这张二分图的最小覆盖,时间复杂度为 \(O…

Machine Schedule Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 14479   Accepted: 6172 Description As we all know, machine scheduling is a very classical problem in computer science and has been studied for a very long history. Scheduli…

Machine Schedule Time Limit: 1 Sec  Memory Limit: 256 MB 题目连接 http://acm.hdu.edu.cn/showproblem.php?pid=1150 Description As we all know, machine scheduling is a very classical problem in computer science and has been studied for a very long history.…

Machine Schedule Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 5316    Accepted Submission(s): 2631 Problem Description As we all know, machine scheduling is a very classical problem in comput…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1150 Machine Schedule Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 6733    Accepted Submission(s): 3375 Problem Description As we all know, mach…

题意 机器调度问题 有两个机器A,B A有n种工作模式0...n-1 B有m种工作模式0...m-1 然后又k个任务要做 每一个任务能够用A机器的模式i或b机器的模式j来完毕 机器開始都处于模式0 每次换模式时都要重新启动 问完毕全部任务机器至少重新启动多少次 最基础的二分图最大匹配问题 对于每一个任务把i和j之间连一条边就能够构成一个二分图 那么每一个任务都能够相应一条边 那么如今就是要找最少的点 使这些点能覆盖全部的边 即点覆盖数 又由于二分图的点覆盖数 = 匹配数 那么就是裸的求二分图最大…

Machine Schedule As we all know, machine scheduling is a very classical problem in computer science and has been studied for a very long history. Scheduling problems differ widely in the nature of the constraints that must be satisfied and the type o…

Machine Schedule Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 9461    Accepted Submission(s): 4755 Problem Description As we all know, machine scheduling is a very classical problem in compu…

http://www.cogs.pro/cogs/problem/problem.php?pid=1168 ★★   输入文件:machine.in   输出文件:machine.out   简单对比时间限制:1 s   内存限制:128 MB [问题描述] 我们知道机器调度是计算机科学中一个非常经典的问题.调度问题有很多种,具体条件不同,问题就不同.现在我们要处理的是两个机器的调度问题. 有两个机器A和B.机器A有n种工作模式,我们称之为mode_0,mode_l,……,mode_n-1.同样…

二分图匹配(匈牙利算法) 1.一个二分图中的最大匹配数等于这个图中的最小点覆盖数 König定理是一个二分图中很重要的定理,它的意思是,一个二分图中的最大匹配数等于这个图中的最小点覆盖数.如果你还不知道什么是最小点覆盖,我也在这里说一下:假如选了一个点就相当于覆盖了以它为端点的所有边,你需要选择最少的点来覆盖所有的边. 2.最小路径覆盖=最小路径覆盖＝|G|-最大匹配数 在一个N*N的有向图中,路径覆盖就是在图中找一些路经,使之覆盖了图中的所有顶点, 且任何一个顶点有且只有一条路径与之关联:(如…

Machine Schedule Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 12976   Accepted: 5529 Description As we all know, machine scheduling is a very classical problem in computer science and has been studied for a very long history. Scheduli…

Machine Schedule Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 5817    Accepted Submission(s): 2932 Problem Description As we all know, machine scheduling is a very classical problem in comput…

Machine Schedule Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 6701    Accepted Submission(s): 3358 Problem Description As we all know, machine scheduling is a very classical problem in comput…

Machine Schedule Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 5371    Accepted Submission(s): 2658 Problem Description As we all know, machine scheduling is a very classical problem in compu…

Machine Schedule Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 17457   Accepted: 7328 Description As we all know, machine scheduling is a very classical problem in computer science and has been studied for a very long history. Scheduli…

二分图:https://blog.csdn.net/c20180630/article/details/70175814 https://blog.csdn.net/flynn_curry/article/details/52966283 匈牙利算法模板:https://blog.csdn.net/sunny_hun/article/details/80627351 例题:hdu 1150 Machine Schedule 参考:https://www.cnblogs.com/qq-star/p…

Machine Schedule Time Limit: 1000ms Memory Limit: 32768KB This problem will be judged on HDU. Original ID: 115064-bit integer IO format: %I64d      Java class name: Main   As we all know, machine scheduling is a very classical problem in computer sci…