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！！！
' H, r' `1 D+ wmodel "Burglar 1"
uses "mmxprs"
) A8 C/ y3 H1 n% }  h2 m1 ddeclarations
" |8 g, ^4 m9 V" x3 k# q! ]* lITEMS = 1..8 ! 物品标号范围
WTMAX = 102 ! 允许携带的重量最大值
% X3 R( J! P" v! Y% A( C, ~VALUE: array(ITEMS) of real ! 物品价值
/ c& N. _$ Y4 r  w; C+ f6 D: iWEIGHT: 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
# |8 u8 ]0 e' G1 l, Bend-declarations
' @  x& l9 P7 W- X1 V! 物品: 1 2 3 4 5 6 7 8
VALUE := [ 15, 100, 90, 60, 40, 15, 10, 1]
0 a; ~: \( I* ?' W4 J  I1 vWEIGHT := [ 2, 20, 20, 30, 40, 30, 60, 10]
! 目标: 使带走的总价值最大
  V7 j: x9 v, p7 n) ]# XMaxVal:= 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
forall(i in ITEMS) take(i) is_binary
' c) j) ~+ Q/ b: Y6 a/ R0 ~& {# bmaximize(MaxVal) ! 求解混合整数问题
$ \( C* Y* R5 ]/ n5 |8 b! 打印输出结果
$ D& f: W' m  Z* J. zwriteln("Solution:\n Objective: ", getobjval)
forall(i in ITEMS) writeln(" take(", i, "): ", getsol(take(i)))
end-model
这段程序运行不了

yunyun842

VALUE := [ 15, 100, 90, 60, 40, 15, 10, 1]
  ?! T1 A/ z: U7 yWEIGHT := [ 2, 20, 20, 30, 40, 30, 60, 10]
, Y. [% O( |- i$ y' j1 @+ \换成
VALUE :: [ 15, 100, 90, 60, 40, 15, 10, 1]
3 m% I, w& n9 sWEIGHT :: [ 2, 20, 20, 30, 40, 30, 60, 10]
' G& X# R4 D% q# ~9 i试试！

空木葬花

非常感谢楼主的福利！