Xpress-IVE 建模问题

cy411522

哪位高人能帮小弟解决这个问题，小弟不甚感激！！！
4 q) J9 Z' f) v% m2 Pmodel "Burglar 1"
+ h( g: |: b; a8 a( k8 }7 s7 `uses "mmxprs"
declarations
ITEMS = 1..8 ! 物品标号范围
; V4 }- F7 I/ B5 RWTMAX = 102 ! 允许携带的重量最大值
% {/ Z8 {* a8 N1 Q4 {) J' CVALUE: array(ITEMS) of real ! 物品价值
WEIGHT: array(ITEMS) of real ! 物品重量
' B8 a( q. {" Ftake: array(ITEMS) of mpvar ! 1 表示带走物品i，0 表示不带走物品i
! x0 t/ Z( o' b3 Send-declarations
6 W4 k( z- A$ f, j% a+ |! 物品: 1 2 3 4 5 6 7 8
VALUE := [ 15, 100, 90, 60, 40, 15, 10, 1]
' M; \: E0 U2 j* P4 [, m0 yWEIGHT := [ 2, 20, 20, 30, 40, 30, 60, 10]
! 目标: 使带走的总价值最大
MaxVal:= sum(i in ITEMS) VALUE(i)*take(i)
3 f' N6 {7 [7 X% N! 重量限制
sum(i in ITEMS) WEIGHT(i)*take(i) <= WTMAX
! 所有变量取值都为0 或1
$ E1 ?7 `; I5 M5 eforall(i in ITEMS) take(i) is_binary
2 a, C1 i8 [" j$ bmaximize(MaxVal) ! 求解混合整数问题
, U' L: c. _5 }! r! 打印输出结果
. J$ |$ g- c$ _( v. U- w- x" Xwriteln("Solution:\n Objective: ", getobjval)
* h! R% z4 Z# o9 m4 P) zforall(i in ITEMS) writeln(" take(", i, "): ", getsol(take(i)))
1 |" A0 |! h% `4 Xend-model
. D( O; G3 M# W8 b这段程序运行不了
, i" S% O1 I7 \6 q% z4 k) [

yunyun842

VALUE := [ 15, 100, 90, 60, 40, 15, 10, 1]
- I# K- ]$ h, ~5 y9 GWEIGHT := [ 2, 20, 20, 30, 40, 30, 60, 10]
换成
# L6 R" N+ ]" N5 N2 ]: q( ^2 TVALUE :: [ 15, 100, 90, 60, 40, 15, 10, 1]
WEIGHT :: [ 2, 20, 20, 30, 40, 30, 60, 10]
试试！

空木葬花

非常感谢楼主的福利！