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"
: f4 T  X: e6 s% e; b+ ideclarations
ITEMS = 1..8 ! 物品标号范围
( V' ]! i7 k: h' a, K) p8 bWTMAX = 102 ! 允许携带的重量最大值
VALUE: array(ITEMS) of real ! 物品价值
$ s$ p+ R  Z- l6 n! m3 AWEIGHT: 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
" C9 m- c6 b3 x: d) n) ~end-declarations
" X. ~4 i  [7 Z4 H+ b! 物品: 1 2 3 4 5 6 7 8
& |6 W( x; v7 y, c8 D# n# RVALUE := [ 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
$ y5 N4 ^+ {, M: ~3 ^MaxVal:= sum(i in ITEMS) VALUE(i)*take(i)
5 h9 q& j- @) \: f) w" v  V8 y& Q! 重量限制
: t+ G, j& D/ }9 c( f( D% {2 dsum(i in ITEMS) WEIGHT(i)*take(i) <= WTMAX
- m' V1 v" w6 B3 N/ S2 Z! 所有变量取值都为0 或1
4 G+ g1 @, x) o4 H) Zforall(i in ITEMS) take(i) is_binary
maximize(MaxVal) ! 求解混合整数问题
! 打印输出结果
1 X0 h5 q# s6 Y# d& jwriteln("Solution:\n Objective: ", getobjval)
forall(i in ITEMS) writeln(" take(", i, "): ", getsol(take(i)))
end-model
" c  m& g! G7 ?& a' _这段程序运行不了
+ U' m6 \+ m0 p. _3 R+ F& F

yunyun842

VALUE := [ 15, 100, 90, 60, 40, 15, 10, 1]
WEIGHT := [ 2, 20, 20, 30, 40, 30, 60, 10]
8 q$ W+ j  a- A2 m; j/ X8 g换成
VALUE :: [ 15, 100, 90, 60, 40, 15, 10, 1]
WEIGHT :: [ 2, 20, 20, 30, 40, 30, 60, 10]
8 n' h4 ~! [- y试试！

空木葬花

非常感谢楼主的福利！