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！！！
model "Burglar 1"
uses "mmxprs"
, ~6 _* K  f0 W& e( |/ Ldeclarations
- T* Q$ ~6 ?4 _7 ~- L  o" I+ _ITEMS = 1..8 ! 物品标号范围
+ d- ~# E+ {! H3 {8 [8 ^4 XWTMAX = 102 ! 允许携带的重量最大值
! h; v7 q! l8 N, @" \/ w( iVALUE: array(ITEMS) of real ! 物品价值
; m. J* K( u" wWEIGHT: array(ITEMS) of real ! 物品重量
/ [0 b) ^$ v; L9 Gtake: array(ITEMS) of mpvar ! 1 表示带走物品i，0 表示不带走物品i
8 ?" H$ i( \% B3 {6 A% qend-declarations
! 物品: 1 2 3 4 5 6 7 8
7 V+ U. k9 A( J  aVALUE := [ 15, 100, 90, 60, 40, 15, 10, 1]
WEIGHT := [ 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)
, x! z2 C9 M9 U! 重量限制
& }5 h; T8 U% G9 \sum(i in ITEMS) WEIGHT(i)*take(i) <= WTMAX
! 所有变量取值都为0 或1
$ @* |8 \& _" |, v1 {  jforall(i in ITEMS) take(i) is_binary
) I. V6 r- b6 r$ I* Q# D0 I% a5 zmaximize(MaxVal) ! 求解混合整数问题
9 F# `: C4 z, B' V8 D! 打印输出结果
writeln("Solution:\n Objective: ", getobjval)
forall(i in ITEMS) writeln(" take(", i, "): ", getsol(take(i)))
2 p$ h) W- d& }. k- @4 r2 g/ `end-model
这段程序运行不了
' t9 V" D( r* w+ k+ f0 H

yunyun842

VALUE := [ 15, 100, 90, 60, 40, 15, 10, 1]
3 T, T2 y* _4 uWEIGHT := [ 2, 20, 20, 30, 40, 30, 60, 10]
换成
% l& J2 U3 m2 Z* j. P! Y" _" i$ s5 X; sVALUE :: [ 15, 100, 90, 60, 40, 15, 10, 1]
/ b9 H, m* I, ^- h3 ^# g% BWEIGHT :: [ 2, 20, 20, 30, 40, 30, 60, 10]
试试！

空木葬花

非常感谢楼主的福利！