/*如果要一个物体的多种属性,最好用结构体,不要用二维数组或者多维数组.用多维数组进行关键字排序很不稳定 */ /*给每个设备的所有价格排序,每个设备选取恰好比已知带宽大的价格(这个时候的比例最大) 循环每个设备就得到所有价格综合 然后得到该带宽下的B/P 比较所有带宽的B/P 选取最大的就是所求的*/ #include <stdlib.h> #include <stdio.h> #define true 1 #define false 0 typedef struct { int…

这个题目一开始不知道如何下手,感觉很像背包,里面有两个变量,一个带宽B,一个价格P,有n个设备,每个设备有k个可选的器材(只需选一个),每个器材都有自己的B和P, n个设备选n个器材,最终,FB=所有器材里最小的B,FP=总的价格,要使得FB/FP最大 这种题目得先把一个变量给控制起来,或者说枚举其中一个变量之后,再通过dp的方法得到另一个变量的最优值,千万别想一步登天 像这个题目,我们如果先把每个设备对应的器材按价格升序排序,然后我枚举可能的FB,对于每个设备,我从前往后扫,一旦扫到了B>=F…

Communication System Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 25006 Accepted: 8925 Description We have received an order from Pizoor Communications Inc. for a special communication system. The system consists of several devices. For…

点击打开链接 Communication System Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 21007   Accepted: 7449 Description We have received an order from Pizoor Communications Inc. for a special communication system. The system consists of several d…

Communication System Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 21631   Accepted: 7689 Description We have received an order from Pizoor Communications Inc. for a special communication system. The system consists of several devices.…

Description We have received an order from Pizoor Communications Inc. for a special communication system. The system consists of several devices. For each device, we are free to choose from several manufacturers. Same devices from two manufacturers d…

We have received an order from Pizoor Communications Inc. for a special communication system. The system consists of several devices. For each device, we are free to choose from several manufacturers. Same devices from two manufacturers differ in the…

We have received an order from Pizoor Communications Inc. for a special communication system. The system consists of several devices. For each device, we are free to choose from several manufacturers. Same devices from two manufacturers differ in the…

Description We have received an order from Pizoor Communications Inc. for a special communication system. The system consists of several devices. For each device, we are free to choose from several manufacturers. Same devices from two manufacturers d…

Communication System Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 22380   Accepted: 7953 Description We have received an order from Pizoor Communications Inc. for a special communication system. The system consists of several devices.…