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"
, v* ?$ I3 J. T. ^+ Z- r  guses "mmxprs"
declarations
ITEMS = 1..8 ! 物品标号范围
WTMAX = 102 ! 允许携带的重量最大值
VALUE: array(ITEMS) of real ! 物品价值
; l6 J) g2 I: f/ H; t" TWEIGHT: array(ITEMS) of real ! 物品重量
5 s; W( q  {, c. j, j4 Q1 `' D* m! j5 Itake: array(ITEMS) of mpvar ! 1 表示带走物品i，0 表示不带走物品i
; F9 X( |" w/ Q6 [: x5 r4 [* @end-declarations
0 o! r- L1 J, z0 v# k' M! 物品: 1 2 3 4 5 6 7 8
VALUE := [ 15, 100, 90, 60, 40, 15, 10, 1]
* O: |  G. g: h, rWEIGHT := [ 2, 20, 20, 30, 40, 30, 60, 10]
2 B; q  ]+ m) P% k3 l$ q! 目标: 使带走的总价值最大
1 t9 C3 p2 x$ z, p  qMaxVal:= sum(i in ITEMS) VALUE(i)*take(i)
3 b0 z0 m' H8 {; u! 重量限制
7 x% t% q2 S. n% a( G  \; B4 ^sum(i in ITEMS) WEIGHT(i)*take(i) <= WTMAX
- B. r; u/ y. l2 a, v6 x, t0 e0 `! 所有变量取值都为0 或1
2 Q4 D) j; ?7 d5 y% S6 y0 zforall(i in ITEMS) take(i) is_binary
maximize(MaxVal) ! 求解混合整数问题
3 g" o+ ?6 p. Z/ M6 b- H  B! 打印输出结果
$ h  E8 p$ k/ o, Mwriteln("Solution:\n Objective: ", getobjval)
. v; \) m! h* Rforall(i in ITEMS) writeln(" take(", i, "): ", getsol(take(i)))
% R+ F1 A4 L( [. q. fend-model
这段程序运行不了
. T6 N3 t5 _  }2 }5 w" }

yunyun842

VALUE := [ 15, 100, 90, 60, 40, 15, 10, 1]
WEIGHT := [ 2, 20, 20, 30, 40, 30, 60, 10]
- ~0 h' l/ L9 D  L# j换成
. t/ _1 i& y4 C1 U3 xVALUE :: [ 15, 100, 90, 60, 40, 15, 10, 1]
WEIGHT :: [ 2, 20, 20, 30, 40, 30, 60, 10]
, R) X/ h) E* d  R8 g( o试试！

空木葬花

非常感谢楼主的福利！