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"
- C* C# B9 B$ m5 yuses "mmxprs"
declarations
ITEMS = 1..8 ! 物品标号范围
& F% H  s* y2 p" MWTMAX = 102 ! 允许携带的重量最大值
VALUE: array(ITEMS) of real ! 物品价值
! s- F  n/ F; u7 l! GWEIGHT: array(ITEMS) of real ! 物品重量
: u1 i. M0 |2 M4 C1 ~take: array(ITEMS) of mpvar ! 1 表示带走物品i，0 表示不带走物品i
9 ~; ]3 c: ^# tend-declarations
! 物品: 1 2 3 4 5 6 7 8
8 e, y: U/ ?# {# n) E. iVALUE := [ 15, 100, 90, 60, 40, 15, 10, 1]
2 N( \' P5 E) a2 ?8 RWEIGHT := [ 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
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
3 Y: |+ Y; a" w, L! 打印输出结果
% H7 n' M$ X3 L% Vwriteln("Solution:\n Objective: ", getobjval)
forall(i in ITEMS) writeln(" take(", i, "): ", getsol(take(i)))
end-model
这段程序运行不了

空木葬花

非常感谢楼主的福利！

yunyun842

VALUE := [ 15, 100, 90, 60, 40, 15, 10, 1]
/ S2 ?& A3 `% h, e2 z9 UWEIGHT := [ 2, 20, 20, 30, 40, 30, 60, 10]
) Y9 D3 X2 {5 ^换成
VALUE :: [ 15, 100, 90, 60, 40, 15, 10, 1]
WEIGHT :: [ 2, 20, 20, 30, 40, 30, 60, 10]
试试！