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！！！
" r; X8 y0 K; x7 bmodel "Burglar 1"
uses "mmxprs"
declarations
1 E/ ~; q* K/ F: CITEMS = 1..8 ! 物品标号范围
9 f- b" h, [- v( g! [$ k5 vWTMAX = 102 ! 允许携带的重量最大值
VALUE: array(ITEMS) of real ! 物品价值
! d2 V$ j7 b7 Q3 M* q+ w% rWEIGHT: array(ITEMS) of real ! 物品重量
take: array(ITEMS) of mpvar ! 1 表示带走物品i，0 表示不带走物品i
% T' m/ J- P. ~) a1 qend-declarations
4 `% T( }2 g% W  t! 物品: 1 2 3 4 5 6 7 8
VALUE := [ 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
. ~- I# [# ^+ V7 t: ~) \MaxVal:= sum(i in ITEMS) VALUE(i)*take(i)
! 重量限制
sum(i in ITEMS) WEIGHT(i)*take(i) <= WTMAX
! 所有变量取值都为0 或1
9 u+ h+ Q* B7 Mforall(i in ITEMS) take(i) is_binary
) P& V/ S* `1 I5 b( U5 w5 y; Tmaximize(MaxVal) ! 求解混合整数问题
! 打印输出结果
writeln("Solution:\n Objective: ", getobjval)
2 T+ l/ Z7 f6 uforall(i in ITEMS) writeln(" take(", i, "): ", getsol(take(i)))
end-model
5 o% c/ [. c8 I这段程序运行不了
- w+ I6 L4 O# a; M( t9 j) J" O" P) ~6 y

yunyun842

VALUE := [ 15, 100, 90, 60, 40, 15, 10, 1]
WEIGHT := [ 2, 20, 20, 30, 40, 30, 60, 10]
换成
VALUE :: [ 15, 100, 90, 60, 40, 15, 10, 1]
  Z# `; p; a) JWEIGHT :: [ 2, 20, 20, 30, 40, 30, 60, 10]
8 Q% R5 e8 x3 [1 }. U试试！

空木葬花

非常感谢楼主的福利！