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！！！
6 m/ F: m8 N' G  v4 C- Umodel "Burglar 1"
1 J/ s  F$ R9 P* ?" cuses "mmxprs"
declarations
6 j6 P: @- V2 q  |4 ~ITEMS = 1..8 ! 物品标号范围
% {7 q# J; u; z& |! _* }WTMAX = 102 ! 允许携带的重量最大值
VALUE: array(ITEMS) of real ! 物品价值
WEIGHT: array(ITEMS) of real ! 物品重量
# \  h: g. y9 g! u5 A8 \& ^0 ~take: array(ITEMS) of mpvar ! 1 表示带走物品i，0 表示不带走物品i
, ]$ h- w- ]( H4 Send-declarations
" k; j( Y4 g' g: c4 w$ U! 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]
& y% K" r- n; G4 Z" k2 g' K0 `! 目标: 使带走的总价值最大
( ]0 _3 [; d: z# k. `: |MaxVal:= sum(i in ITEMS) VALUE(i)*take(i)
3 n" Q& W/ ?$ ^  R' Q! 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
% n4 F5 P- H+ Y) D' q  ymaximize(MaxVal) ! 求解混合整数问题
! 打印输出结果
writeln("Solution:\n Objective: ", getobjval)
  p; F& t0 r0 D: J+ n# @forall(i in ITEMS) writeln(" take(", i, "): ", getsol(take(i)))
9 e$ D3 n6 h7 G) Z; f& f7 Nend-model
, A; q3 [9 i6 s' u. [这段程序运行不了
0 i; q3 M2 z$ o4 K$ Z5 [1 P! h3 N1 U

yunyun842

VALUE := [ 15, 100, 90, 60, 40, 15, 10, 1]
8 U# L; \: S: SWEIGHT := [ 2, 20, 20, 30, 40, 30, 60, 10]
0 h0 ?  _& E2 a6 p) Q; U换成
VALUE :: [ 15, 100, 90, 60, 40, 15, 10, 1]
WEIGHT :: [ 2, 20, 20, 30, 40, 30, 60, 10]
7 {! n- |2 l1 F! z9 x  \4 O* C3 e2 _试试！

空木葬花

非常感谢楼主的福利！