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…

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…

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…

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 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…

题目链接:http://poj.org/problem?id=1325 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 satis…

Time Limit: 1000 MS Memory Limit: 10000 KB 64-bit integer IO format: %I64d , %I64u   Java class name: Main [Submit] [Status] [Discuss] Description As we all know, machine scheduling is a very classical problem in computer science and has been studied…

http://poj.org/problem?id=1325 题意: 两种机器A和B.机器A具有n种工作模式,称为mode_0,mode_1,...,mode_n-1,同样机器B有m种工作模式mode_0,mode_1,..., mode_m-1.开始时,它们都在mode_0工作. 对于给定的k个作业,可以在特定模式下的两个机器中的任一个中处理它们中的每一个.例如,作业0可以在机器A在mode_3处理,或者在机器B在mode_4处理,作业1可以在机器A中在mode_2处理,或者在机器B中在mod…

题目链接:http://poj.org/problem?id=1325 题目意思:有 k 个作业,机器A有 n 个模式:0 ~ n-1,机器B 有 m 个模式:0~ m-1.每一个作业能运行在 A 的 某一个模式(假设为 i (0 <= i <= n-1 ) )或 B 的某一个模式下(j (0 <= j <= m-1)).多个作业可以同时运行在 A 的某一个 模式下,当然 B 也如此.每对A 或 B 转换一次模式,就要重启一次 A 或者 B,你需要选择A 或 B 的一些模式,使得所…

http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemId=364 http://poj.org/problem?id=1325 题目大意: 给两台机器A和B,他们分别有n和m个工作模式,初始的时候都在Mode_0状态上,切换工作模式的时候必须重启机子.给你K个任务,第i个任务可以运行在A的mode_x上,B的mode_y上,求完成所有工作所需最少重启次数. 思路: 好吧,不会做.看了大神的思路: 对于任务(i,x,y),我们在A机mod…