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[问题求助] 请教下大侠们lingo最优解的问题

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coiby

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不支持自定义 Discuz! 代码

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发表于 2010-1-10 14:45 |只看该作者 |倒序浏览

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MODEL:- N/ F2 X! J% k# X/ t( b7 g# e; f' Y
TITLE 宾馆数目;
4 H1 g( K5 E/ q+ E* x; |
SETS:
\" M& j0 m* W0 _: {
ROOM/1..32/:price,c,double,x1,x2;6 j' K: c5 E6 \6 Y
HOTEL/1..10/:chose;
* m: M( r7 v5 K' [8 `2 ^& m; E
LINKS(HOTEL,ROOM):e;
( u1 l4 i9 W) s, M
!HOTEL(ROOM,ROOM)/1,2,3,4 5,6,7,8 9,10,11 12,13 14,15,16 17,18,19,20 21,22,23 24,25,26 27,28,29,30 31,32/;- ?- D% m4 R+ M0 V+ \/ r
ENDSETS
( e0 t+ f4 p3 e& k! j6 ~4 {
DATA:
_: g1 n: r% D4 R2 ~; B
price=180 220 180 220 140 160 180 200 150 180 150 140 200 140 160 200 160 170 180 220 150 160 300 180 160 180 260 260 280 280 260 280;( t6 M6 t' f( D8 V/ y2 k: t
c=50 30 30 20 50 35 30 35 50 24 27 50 45 35 35 40 40 40 30 30 50 40 30 40 40 45 30 30 30 30 55 45;
double=1,1,0,0,1,1,1,1,1,1,0,1,1,1,1,1,0,1,0,1,1,0,0,1,1,0,1,0,1,0,1,1;& x! U\" g( ^# x
e=1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0/ g/ P) R& X$ `+ e3 X& E2 H
0,0,0,0,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
4 m! ]\" Q4 @# c7 W# I4 P
0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0$ @2 R2 b2 `! ~/ u# i8 G6 o8 S
0,0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,05 o+ ]( ]\" c# B\" s d
0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
# ]1 n: d o, u\" q& X O# t
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,09 [& @4 z& e' i' m\" J
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0
; u) g! ]4 l9 G+ P: Y9 ?
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0
: E! \( w, L( O1 i+ }4 S; i S\" m
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,0,0
& }0 P9 J4 P. C/ t- V
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1;% p1 p$ {5 H9 U6 J6 Z
ENDDATA8 @$ j, i6 }: |0 R# C
MIN=@SUM(HOTEL:chose);, Z\" d8 U) g- _) w; A
@FOR(LINKS:@BIN(e));: H, b. K- D' ^+ {) M7 g
@FOR(ROOM:@GIN(x1);@GIN(x2));
4 X; q% c; r# t$ k9 d; C p8 z
@FOR(ROOM:c>=x1+x2*double);\" C/ S/ y' M: J: W! g
@SUM(ROOM|price#GT#120 #and# price#LT#160:x1)>=146;
3 y4 T% o! T7 z8 R! d/ W2 y. \\" i' G
@SUM(ROOM|price#GT#161 #and# price#LT#200:x1)>=85;3 l2 o: j K6 k1 y6 v* g
@SUM(ROOM|price#GT#201 #and# price#LT#300:x1)>=53;
) \8 ?$ O! y( L( W
@SUM(ROOM|price#GT#120 #and# price#LT#160:x2*double*2)>=203;\" I& R4 B, c9 u* q
@SUM(ROOM|price#GT#161 #and# price#LT#200:x2*double*2)>=133; e! m1 O. |3 U
@SUM(ROOM|price#GT#201 #and# price#LT#300:x2*double*2)>=43;' c, W. }2 a3 V. \* ^5 ^
@FOR(HOTEL(K):chose=@IF(@SUM(ROOM(I):e(K,I)*(x1(I)+double(I)*x2(I)))#GE#1,1,0));
4 [9 o( a; M* o$ b
hotelsum=@SUM(HOTEL:chose);\" X3 @/ c; p4 B9 P/ W9 F0 w
costall=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i)));
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END
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复制代码

为什么这个得到的结果反而比这个还差？

' g3 J! ]$ O& @5 H$ u/ x
MODEL:
( _* } H- L5 I7 D\" y
TITLE 宾馆数目;
. e% ]/ |4 B' O8 I) W
SETS:* c\" `% d! ]% b+ X% {- L
ROOM/1..32/:price,c,double,x1,x2;$ o. L7 }& o8 b: \; T) Z
HOTEL/1..10/:chose;
, }3 P% D# E2 t5 G, \( y4 m, l
LINKS(HOTEL,ROOM):e;
\" {5 m6 p& d/ a& k% k
!HOTEL(ROOM,ROOM)/1,2,3,4 5,6,7,8 9,10,11 12,13 14,15,16 17,18,19,20 21,22,23 24,25,26 27,28,29,30 31,32/;
4 k) j# M$ H1 j# ]\" y' ]
ENDSETS
$ E M% c% }7 W3 j+ W
DATA:+ z5 S9 e1 N\" r+ O* P- Q' f7 e
price=180 220 180 220 140 160 180 200 150 180 150 140 200 140 160 200 160 170 180 220 150 160 300 180 160 180 260 260 280 280 260 280;
7 ^8 o5 v3 z3 U, s
c=50 30 30 20 50 35 30 35 50 24 27 50 45 35 35 40 40 40 30 30 50 40 30 40 40 45 30 30 30 30 55 45;
6 G& t( H7 F( g+ x! Z
double=1,1,0,0,1,1,1,1,1,1,0,1,1,1,1,1,0,1,0,1,1,0,0,1,1,0,1,0,1,0,1,1;5 r C, C3 a) X2 w
e=1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
0 y2 w, a4 `& ^0 |
0,0,0,0,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,05 V\" i- R; _) v: q9 S+ @\" Z: ~% b
0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
. L. p; X$ H* I
0,0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
4 `# h. V9 l- r
0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,03 Y7 R Q7 W# y7 x) Z6 g+ ~
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0. k1 V4 n2 e; L% f) ~+ O# f
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0: `% ?\" m8 h \: o
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0
+ W7 B$ h$ W4 a) I \. s3 M% P) r
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,0,0
}; q2 D8 W; L2 a* p3 X, ]5 m
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1;- U) k$ E7 n' J, J
ENDDATA* N* B- C- v) s% Z6 _, G% E; Y& V% B
MIN=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i)));
0 K: @0 w: i8 ?
@FOR(LINKS:@BIN(e));6 j; V) A, g! f% n9 D8 U
@FOR(ROOM:@GIN(x1);@GIN(x2));2 T' c9 \ B8 Y. q' I g
@FOR(ROOM:c>=x1+x2*double);! _; |* _# I/ P9 ^+ q
@SUM(ROOM|price#GT#120 #and# price#LT#160:x1)>=146;) ?6 d& z+ l4 m6 v, O9 L6 ?
@SUM(ROOM|price#GT#161 #and# price#LT#200:x1)>=85;
: m\" q4 @& I) Y' u! b
@SUM(ROOM|price#GT#201 #and# price#LT#300:x1)>=53;
* ]' O( ]+ z- n9 A: s2 x
@SUM(ROOM|price#GT#120 #and# price#LT#160:x2*double*2)>=203;
3 }, M; |$ J8 R# H
@SUM(ROOM|price#GT#161 #and# price#LT#200:x2*double*2)>=133;, e0 h' ^& k1 b7 n\" T& X
@SUM(ROOM|price#GT#201 #and# price#LT#300:x2*double*2)>=43;
- f8 l* |1 j/ W' V6 |\" s
@FOR(HOTEL(K):chose=@IF(@SUM(ROOM(I):e(K,I)*(x1(I)+double(I)*x2(I)))#GE#1,1,0));
# s\" K0 Y4 @+ I! ?1 g1 [. S
hotelsum=@SUM(HOTEL:chose);
( Q( V2 x+ B* f; ]
costall=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i)));
: u& z; Q7 Y# S
END, B0 k0 {' v1 m; }* y! l: h