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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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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 |正序浏览

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MODEL:
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TITLE 宾馆数目;
% V. a4 C1 c. i5 M3 v
SETS:
# l3 v/ b0 q8 `3 P, o4 g
ROOM/1..32/:price,c,double,x1,x2;2 ]+ D, b( `\" K: r
HOTEL/1..10/:chose;
& L @; f) H; c; E# F( A
LINKS(HOTEL,ROOM):e;
$ g/ b2 n& H5 q. I2 z9 k: }# b
!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/;
! I/ \3 Y% _! q7 H! \! p
ENDSETS
$ f9 {- o/ d. W$ y
DATA:
5 n) l5 I# V; z0 A\" F
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;8 o5 k2 N/ R% f5 a
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;- U. j3 k9 C/ C
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;' T& s) P8 v8 D
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
9 r' Q9 n8 }9 b\" v; V# d
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
7 s\" c, L8 O- ?9 u* z u s. D
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/ L9 |$ \- V% g' m# U; j0 w) 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
% A\" e5 {9 N( n G
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! { b5 g! S7 J* H
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& e9 ~- S: d8 d: K
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
0 V r. l1 U2 H
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
\" \2 Y8 [9 _# [4 [\" q8 a
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
2 d! X! g1 d7 k3 |9 x
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;
& c/ p% z4 \0 t$ r
ENDDATA
v( ^0 Z+ M5 @9 j) q! A- I4 h: S. j
MIN=@SUM(HOTEL:chose);
& I- L6 ~ a% Y
@FOR(LINKS:@BIN(e));
k' W3 f8 K/ l K- G
@FOR(ROOM:@GIN(x1);@GIN(x2));
* v, \9 i' w- p/ ~8 T
@FOR(ROOM:c>=x1+x2*double);3 Z, e9 \; e% Z\" [
@SUM(ROOM|price#GT#120 #and# price#LT#160:x1)>=146;
( x+ p4 L0 b* K/ x2 f0 S3 T
@SUM(ROOM|price#GT#161 #and# price#LT#200:x1)>=85;: U% ^% U _* f
@SUM(ROOM|price#GT#201 #and# price#LT#300:x1)>=53;! w$ Z7 Q# s0 J. n k
@SUM(ROOM|price#GT#120 #and# price#LT#160:x2*double*2)>=203;
( m) W2 A3 z1 h. e2 V- U
@SUM(ROOM|price#GT#161 #and# price#LT#200:x2*double*2)>=133;4 t3 {' F' W9 C
@SUM(ROOM|price#GT#201 #and# price#LT#300:x2*double*2)>=43;4 V4 l( q6 C* s
@FOR(HOTEL(K):chose=@IF(@SUM(ROOM(I):e(K,I)*(x1(I)+double(I)*x2(I)))#GE#1,1,0));
. a/ L, p. O3 ?% g0 ^3 k
hotelsum=@SUM(HOTEL:chose);9 K& k( c y9 I [
costall=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i)));& {% N5 B! A0 L! ?3 {. o1 Y
END- l' p) c0 h: y9 b

复制代码

为什么这个得到的结果反而比这个还差？

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MODEL:4 A! `7 B3 D& E+ T$ B\" h' K6 D( }
TITLE 宾馆数目;% w1 ^2 \9 g* a7 `; `
SETS:* s A- N' D3 b: ~0 t
ROOM/1..32/:price,c,double,x1,x2;
: \* z8 D r* _4 h+ ]
HOTEL/1..10/:chose;+ d$ ^$ K$ r1 ~1 |1 t: V+ e
LINKS(HOTEL,ROOM):e;9 `' ^& B/ N. X4 a1 y9 r; i0 x2 y+ G
!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/;
/ @+ Z8 N\" Q0 p6 G
ENDSETS
2 R5 y# b( L6 `# l7 s* s, V0 e
DATA:
7 d* S& r9 K0 f# o+ y& ?\" ]
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;4 Q6 M- N! a% P; 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;8 W' ?# K/ q, @8 v
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;
% S8 i n1 F- q1 H% u- N2 a
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
4 _) V3 t( h9 r8 G9 L
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* ~6 q* P4 \( ^2 @# A: X0 p0 ?
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
$ y5 x/ w8 w) _ q! m7 z# 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) a5 S/ z% \% }) g: [' I- o
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
( A\" a\" M( i+ B\" J/ w
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
; l' q, p7 W1 X A9 x
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 ~# `& o a4 W& s- S
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,05 u8 p2 |2 U; L
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
2 C( C' k5 V2 i) f4 r( F* s
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;; [ |7 z9 V6 s
ENDDATA7 T- L! h# m2 a. u1 ?' v! O; ]
MIN=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i)));
( K: B' X8 o& W* p
@FOR(LINKS:@BIN(e));: U+ X; F0 F% U) T+ D
@FOR(ROOM:@GIN(x1);@GIN(x2));
6 Q7 i5 Q9 ]) \9 n. }
@FOR(ROOM:c>=x1+x2*double);% j% A! K3 w( V( i3 ~
@SUM(ROOM|price#GT#120 #and# price#LT#160:x1)>=146;! E4 Q6 P* u0 C/ J, Y) w
@SUM(ROOM|price#GT#161 #and# price#LT#200:x1)>=85;
# ^! K$ a; J. e# j ]) E\" m/ y- R0 L
@SUM(ROOM|price#GT#201 #and# price#LT#300:x1)>=53;
2 n9 b% }6 o# Y) M2 r
@SUM(ROOM|price#GT#120 #and# price#LT#160:x2*double*2)>=203;
$ O) z% r1 t2 @4 @/ Q\" v' G
@SUM(ROOM|price#GT#161 #and# price#LT#200:x2*double*2)>=133;
7 `( ]+ I4 l( `\" v+ y! h
@SUM(ROOM|price#GT#201 #and# price#LT#300:x2*double*2)>=43;
: C9 k9 a\" I5 D
@FOR(HOTEL(K):chose=@IF(@SUM(ROOM(I):e(K,I)*(x1(I)+double(I)*x2(I)))#GE#1,1,0));
$ |6 t\" j3 z, F8 n4 d3 g
hotelsum=@SUM(HOTEL:chose);/ e1 d' B& t! p
costall=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i)));! Y& g\" P8 I- p2 E4 V/ V9 S
END
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