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！！！
$ p, S$ Q* X  |7 rmodel "Burglar 1"
6 t* X; b, @# I5 G3 |$ i% Q# Guses "mmxprs"
declarations
ITEMS = 1..8 ! 物品标号范围
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
: `+ V8 Y, O9 c% Ktake: array(ITEMS) of mpvar ! 1 表示带走物品i，0 表示不带走物品i
; C$ @4 U& c: Z8 G2 Iend-declarations
! 物品: 1 2 3 4 5 6 7 8
9 C" {! Y) H* n6 F5 ^5 t) ^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
MaxVal:= sum(i in ITEMS) VALUE(i)*take(i)
/ j& L" B  v5 |; J" @4 {8 Q! e* j! 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
maximize(MaxVal) ! 求解混合整数问题
! 打印输出结果
/ n; x" |: b( h4 ?! [* q0 ?writeln("Solution:\n Objective: ", getobjval)
forall(i in ITEMS) writeln(" take(", i, "): ", getsol(take(i)))
end-model
% M2 F4 B; Q& E9 e. e这段程序运行不了
6 {5 g- @8 P9 R+ ^4 Q8 Y) m  n

yunyun842

VALUE := [ 15, 100, 90, 60, 40, 15, 10, 1]
WEIGHT := [ 2, 20, 20, 30, 40, 30, 60, 10]
换成
( w9 r' [8 A# m- o/ k1 l3 k* ^3 FVALUE :: [ 15, 100, 90, 60, 40, 15, 10, 1]
WEIGHT :: [ 2, 20, 20, 30, 40, 30, 60, 10]
) a3 d4 S! ~" {% C0 n) M$ o试试！

空木葬花

非常感谢楼主的福利！