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"
8 N: s6 b9 _& Quses "mmxprs"
6 P0 e  G- a2 ^  [declarations
ITEMS = 1..8 ! 物品标号范围
" l3 @- M+ C3 @$ HWTMAX = 102 ! 允许携带的重量最大值
- L6 U; C* `3 ^5 a+ Y" LVALUE: array(ITEMS) of real ! 物品价值
& I! @) ]4 v/ y4 ^4 B, }- ~2 D: ^WEIGHT: 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
, c/ T& g0 ^+ S' e1 v+ tend-declarations
7 a, r4 m! E1 a% J) c! 物品: 1 2 3 4 5 6 7 8
+ h# b1 ^) S5 w# Y. Y/ L" iVALUE := [ 15, 100, 90, 60, 40, 15, 10, 1]
  n) U. c; R; P1 L: o6 ^& DWEIGHT := [ 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)
! 重量限制
' F' H& b3 p8 xsum(i in ITEMS) WEIGHT(i)*take(i) <= WTMAX
+ }9 o# I! {# ?/ G! 所有变量取值都为0 或1
0 D# s* X. [+ c: n" K3 Dforall(i in ITEMS) take(i) is_binary
maximize(MaxVal) ! 求解混合整数问题
7 Q6 [' o" _# e3 v! 打印输出结果
writeln("Solution:\n Objective: ", getobjval)
forall(i in ITEMS) writeln(" take(", i, "): ", getsol(take(i)))
end-model
6 U% J( t5 n- |+ v6 Y2 D  o这段程序运行不了
$ T7 p- A, y- @$ s9 i* s4 j+ G

yunyun842

VALUE := [ 15, 100, 90, 60, 40, 15, 10, 1]
4 f: E/ n  y  q. RWEIGHT := [ 2, 20, 20, 30, 40, 30, 60, 10]
换成
VALUE :: [ 15, 100, 90, 60, 40, 15, 10, 1]
$ |( S4 {- z3 [WEIGHT :: [ 2, 20, 20, 30, 40, 30, 60, 10]
试试！

空木葬花

非常感谢楼主的福利！