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！！！
; N  q0 j  U/ u0 `; _- S$ L. mmodel "Burglar 1"
2 w0 L$ R5 X1 I  f' F. H  T3 @uses "mmxprs"
, A$ [; `" A, c  C+ Ldeclarations
' D- T: s( z: o5 d* o+ nITEMS = 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
5 a8 c1 o! R4 }( j+ I' PWEIGHT: array(ITEMS) of real ! 物品重量
, x$ [' ?5 C: H9 m& h& |take: array(ITEMS) of mpvar ! 1 表示带走物品i，0 表示不带走物品i
end-declarations
! 物品: 1 2 3 4 5 6 7 8
VALUE := [ 15, 100, 90, 60, 40, 15, 10, 1]
0 `) ?& l) o: W4 A, rWEIGHT := [ 2, 20, 20, 30, 40, 30, 60, 10]
! 目标: 使带走的总价值最大
. E- c2 V& c% x2 Z& W. w  NMaxVal:= sum(i in ITEMS) VALUE(i)*take(i)
! 重量限制
sum(i in ITEMS) WEIGHT(i)*take(i) <= WTMAX
0 c7 ~+ }) _  ]$ V! 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
: P6 \& E$ J7 Q! H1 @: V6 m# nwriteln("Solution:\n Objective: ", getobjval)
forall(i in ITEMS) writeln(" take(", i, "): ", getsol(take(i)))
. {" W* c  K/ S$ S$ f. j' F7 \end-model
这段程序运行不了

yunyun842

VALUE := [ 15, 100, 90, 60, 40, 15, 10, 1]
WEIGHT := [ 2, 20, 20, 30, 40, 30, 60, 10]
换成
VALUE :: [ 15, 100, 90, 60, 40, 15, 10, 1]
7 W- m8 Y! I, g3 Q9 o- sWEIGHT :: [ 2, 20, 20, 30, 40, 30, 60, 10]
试试！

空木葬花

非常感谢楼主的福利！