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！！！
( R7 Z; `+ w" s; \) Amodel "Burglar 1"
. f7 h; M2 ~) |, w$ vuses "mmxprs"
declarations
ITEMS = 1..8 ! 物品标号范围
WTMAX = 102 ! 允许携带的重量最大值
. m5 L* o) q* o1 |. u7 EVALUE: array(ITEMS) of real ! 物品价值
& Q/ J+ @6 |1 ^' d% XWEIGHT: 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
end-declarations
! 物品: 1 2 3 4 5 6 7 8
9 u6 S# B$ \  a; rVALUE := [ 15, 100, 90, 60, 40, 15, 10, 1]
# t7 G0 m0 k+ v7 }6 \# {6 `0 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)
1 d7 ?( p4 S2 w0 P# X  J6 F* P2 @! 重量限制
% {8 |4 ?, S) ~" }3 qsum(i in ITEMS) WEIGHT(i)*take(i) <= WTMAX
9 G) q% E5 b2 m/ ]* B! 所有变量取值都为0 或1
! ?- x) b  ?) T& Pforall(i in ITEMS) take(i) is_binary
maximize(MaxVal) ! 求解混合整数问题
- b" r6 E1 |5 _" U1 Y! 打印输出结果
: @: [2 L/ V' K* Z2 [8 \/ F9 y6 E* Kwriteln("Solution:\n Objective: ", getobjval)
! ~0 l  H' |4 N! V' Yforall(i in ITEMS) writeln(" take(", i, "): ", getsol(take(i)))
. \4 n( W' f; N; [5 kend-model
这段程序运行不了
, p' i9 p0 U6 X. r: p% E

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]
1 \; |5 W% o/ \3 R! xWEIGHT :: [ 2, 20, 20, 30, 40, 30, 60, 10]
试试！

空木葬花

非常感谢楼主的福利！