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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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发表于 2010-1-10 14:45 |只看该作者 |倒序浏览

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\" J8 C8 Z. \) i- ?9 Q* P
MODEL:
3 a% W. F! U! `\" p
TITLE 宾馆数目;! E6 q5 E' H) k3 B1 g
SETS:0 B7 F6 B- J0 B: e/ K' V3 r5 s1 ]
ROOM/1..32/:price,c,double,x1,x2;
/ O0 q( |5 z! F. x+ U
HOTEL/1..10/:chose;4 M! G; Q; Y: f2 d' i
LINKS(HOTEL,ROOM):e;
' K: O8 c4 K' H1 Y( d, X
!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/;
( Q* q! [; I# e/ I7 S# O
ENDSETS, o e( K\" c, m. y. I, c
DATA:
% ?/ w% Z( m0 O
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;
2 H9 M* Y. I# Q\" L
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;
, z+ J9 I: y( V) O; s
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;. c8 J2 ^6 Y/ g$ t @. W: T\" s
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
. F- l8 F! p9 m
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
8 R) f. c7 z\" r5 U8 N k& k
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) Q0 M. C: y# [( A
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: i2 o4 Q8 G5 d
0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,05 h, ?9 ?. w: D9 U+ }, `
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,02 Y6 X) }) I3 C0 @4 I8 Z& ]
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,03 H; h; S; T: S0 Y$ H2 ]/ [
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
, g5 X# O0 P3 r6 F
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,0,05 m5 B. ?9 B2 C7 `
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;
2 Z8 |8 t6 D% k, C4 e. ?
ENDDATA
; v/ f( M: o* @2 H5 t$ b0 N
MIN=@SUM(HOTEL:chose);7 L4 D/ K2 W7 p! k
@FOR(LINKS:@BIN(e));8 D1 z r9 R* O- P$ X6 Z( h
@FOR(ROOM:@GIN(x1);@GIN(x2));! g M; I& k' ~\" ^- V
@FOR(ROOM:c>=x1+x2*double);
2 E7 c9 h0 `5 d% w/ V
@SUM(ROOM|price#GT#120 #and# price#LT#160:x1)>=146;
' {- q$ i4 X. B. m
@SUM(ROOM|price#GT#161 #and# price#LT#200:x1)>=85;
6 N$ M( F$ q4 X# [. L/ r; n
@SUM(ROOM|price#GT#201 #and# price#LT#300:x1)>=53;7 c# |+ T8 e j1 \/ n
@SUM(ROOM|price#GT#120 #and# price#LT#160:x2*double*2)>=203;
2 N* e. H, v( t$ k3 G
@SUM(ROOM|price#GT#161 #and# price#LT#200:x2*double*2)>=133;- u3 o) v, Z. Q. g& Y# U0 W
@SUM(ROOM|price#GT#201 #and# price#LT#300:x2*double*2)>=43;( Z+ W4 j* o& H! l
@FOR(HOTEL(K):chose=@IF(@SUM(ROOM(I):e(K,I)*(x1(I)+double(I)*x2(I)))#GE#1,1,0));) n1 ]6 }- J+ ?* y% L0 p
hotelsum=@SUM(HOTEL:chose);4 ~: c4 H) m3 Q
costall=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i)));
8 ~' E, s# y$ F
END
/ T+ E G! R5 s\" H5 J9 v1 l2 |

复制代码

为什么这个得到的结果反而比这个还差？

. r; d# v1 D% y. s1 B! Q- P
MODEL:# _4 T0 H5 q0 d$ ?# }+ b2 @\" b
TITLE 宾馆数目;0 ^) u' y5 x6 M3 M7 Z% v; x9 @; h
SETS:
! Z2 C# Z- K; e6 R! {; k3 Y
ROOM/1..32/:price,c,double,x1,x2;
^: i+ q9 a0 W0 r\" c1 J. [# H
HOTEL/1..10/:chose;) o. ]% z. d/ m$ m5 W! ]6 D# }
LINKS(HOTEL,ROOM):e;
\" d# |$ Y\" M9 r6 ?& g8 V& 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/;
% o& H1 ~' Z( o# V* B
ENDSETS
/ O! `5 {& J3 r( G( o4 F
DATA:% F' e2 @! z4 C. S, @ v; u
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;
% Z0 e$ q, W2 W9 j* q5 C
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;* \. q% T2 Y% t6 u( ~
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. Z1 e, R# S% W; f6 s( O2 K* s3 }
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
( x$ [0 Z; X) s. i: s/ S1 q' ^
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- n0 P$ G! D8 T# e! ~\" g
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 c$ v+ Y, D+ y; o
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
$ Y; D [9 o* f
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# y3 [! d6 C1 U8 V5 Q( ?7 N2 p
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+ _. o* ]6 @; p6 M+ Z1 a
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
4 z' m/ `5 l) z1 G: g; z i: S
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
6 ?1 S3 g$ V4 W* i ]- Q
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! m+ h& g0 b1 ]/ D/ y% G
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;
$ _\" V! h; V, j
ENDDATA; F3 R- {3 d. ~7 M. k' _
MIN=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i)));
0 E# E+ M' e2 u2 Q# o+ W- E# C5 {
@FOR(LINKS:@BIN(e));
4 ^( |( _5 f6 z\" o8 p1 C
@FOR(ROOM:@GIN(x1);@GIN(x2));
+ G/ _5 m0 v( W+ O0 r. t1 M$ {( _
@FOR(ROOM:c>=x1+x2*double);; [. d* j& h; w e# u
@SUM(ROOM|price#GT#120 #and# price#LT#160:x1)>=146;
5 b' P& N$ e6 z2 K+ B* s: V
@SUM(ROOM|price#GT#161 #and# price#LT#200:x1)>=85;$ r5 ]. K% p\" h+ M
@SUM(ROOM|price#GT#201 #and# price#LT#300:x1)>=53;
/ H9 Z- o3 Q' {
@SUM(ROOM|price#GT#120 #and# price#LT#160:x2*double*2)>=203;7 }( ?' O# m. ]$ ^9 @
@SUM(ROOM|price#GT#161 #and# price#LT#200:x2*double*2)>=133;; e8 ~2 R# ]% Q; x\" s
@SUM(ROOM|price#GT#201 #and# price#LT#300:x2*double*2)>=43;- v\" t; U9 n$ |$ `
@FOR(HOTEL(K):chose=@IF(@SUM(ROOM(I):e(K,I)*(x1(I)+double(I)*x2(I)))#GE#1,1,0));
8 b1 Y J$ X1 r& t2 O( Z) m2 i% a
hotelsum=@SUM(HOTEL:chose);3 c$ c) d( }7 D$ O9 S) G! V1 m
costall=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i)));; u, x( M1 _% V- R; n
END8 A+ Q# W2 K+ v* L/ y\" n: D