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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 |倒序浏览

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MODEL:
1 R\" E* q9 q/ T* I2 T7 h
TITLE 宾馆数目;
% x3 U( @' D* X6 L4 Y2 g
SETS:
% B% `: S1 X6 Q\" _# W
ROOM/1..32/:price,c,double,x1,x2;' q2 b1 k/ }9 l1 X& s* [& d
HOTEL/1..10/:chose;) x; l+ r! _8 [) ?
LINKS(HOTEL,ROOM):e;
5 J: Y* g6 v; a- A
!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/;- V\" {/ f) H, P4 A
ENDSETS
# @4 c4 K6 o& k) X
DATA:0 c- \3 ?1 }4 _7 G+ H5 z
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;& A @1 g# `1 @. d
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;* i: K$ A6 d% Y! t2 u' a0 x
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;
$ P! {; d+ b3 ?! V( T
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, e; N1 g! b* I& Q- 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% y: Z, d1 Q# |
0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,05 q8 U' f, ~* I8 D( k
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
; ~) E* D( o/ |4 s' @
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
5 R; B7 L. }; ]. c, Y
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,05 p1 E\" ~& z, c* Q g
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,06 [3 H* I3 O, X) e
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) Y2 b% O8 z8 X$ C9 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
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;
. @0 L+ A- P3 Y
ENDDATA Z( L3 y! d- E; L3 C- Z$ J' s\" M
MIN=@SUM(HOTEL:chose);5 F1 n+ \5 M( u- I* @
@FOR(LINKS:@BIN(e));
- @* U G6 a4 E( @) k
@FOR(ROOM:@GIN(x1);@GIN(x2));1 G4 l+ T. |/ j
@FOR(ROOM:c>=x1+x2*double);
$ }7 H- w( Z\" j$ J# A8 _
@SUM(ROOM|price#GT#120 #and# price#LT#160:x1)>=146;' r* w1 m2 ?\" k\" S* \0 T; k' t
@SUM(ROOM|price#GT#161 #and# price#LT#200:x1)>=85;
7 y$ b% u. U8 n: {, ~+ _4 p4 ^
@SUM(ROOM|price#GT#201 #and# price#LT#300:x1)>=53;' `4 h' \# w) C% Q+ T% @
@SUM(ROOM|price#GT#120 #and# price#LT#160:x2*double*2)>=203; k1 `# |1 q R4 F! O% X' Z
@SUM(ROOM|price#GT#161 #and# price#LT#200:x2*double*2)>=133;1 E* s2 k# U: b3 n
@SUM(ROOM|price#GT#201 #and# price#LT#300:x2*double*2)>=43;$ M5 S D- a6 S$ |
@FOR(HOTEL(K):chose=@IF(@SUM(ROOM(I):e(K,I)*(x1(I)+double(I)*x2(I)))#GE#1,1,0));
' w9 R7 ~6 b1 N8 M N
hotelsum=@SUM(HOTEL:chose);
O6 @. C4 ?2 b
costall=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i)));
3 N1 z6 o% m6 s+ k( v+ T
END7 G5 ]8 | o' m* s4 \* G

复制代码

为什么这个得到的结果反而比这个还差？

/ Y/ B1 C8 @% Y1 _! j4 V& o
MODEL:0 I+ {. i\" g7 g6 D5 u
TITLE 宾馆数目;
; P' `8 p/ s% t. U# O9 N. l! V
SETS:
6 C& J M# [% Z
ROOM/1..32/:price,c,double,x1,x2;, x9 Z& _; A% I% G6 m6 B
HOTEL/1..10/:chose;
0 ^+ ~2 G8 j! M8 s& P/ b! h
LINKS(HOTEL,ROOM):e;( m, B: s2 e: T
!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/;2 x0 |+ O5 h0 Y3 q
ENDSETS
. E: f+ z% _/ w+ Z4 `\" ?0 M
DATA:
. `! X) r- U+ G4 U) @) ]) b2 R7 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;7 v1 @; O- [7 n O
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;$ g0 C- }5 }* d% U+ l1 }\" b. f: x
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;
# C3 o! L\" m8 O( n' N. I
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
8 A9 @: _ ]. b1 f* w2 ]/ D5 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
5 c- D2 R7 Z- d g) S5 j
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
5 ^/ O: P2 }/ L% h4 {
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, c2 C% G( f7 d7 m$ f\" s) C- b$ A
0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,06 x: k- ]0 G) |' w. @( K2 {
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
- |6 ~! N: U( d 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; t! d( G& W1 K
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,08 h D# K0 L! b$ t9 A2 J
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,0,02 T7 w0 Z$ u% z\" ^5 y
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;
' @! m+ }+ s; j3 V% _
ENDDATA
5 M3 V c+ X\" c! {. H
MIN=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i)));
( L! v3 O: y) K
@FOR(LINKS:@BIN(e));% `& x( h1 |0 t4 `1 H
@FOR(ROOM:@GIN(x1);@GIN(x2)); I/ J* ~, F1 C2 c' k
@FOR(ROOM:c>=x1+x2*double);6 G% O5 D' H4 f% s7 Q
@SUM(ROOM|price#GT#120 #and# price#LT#160:x1)>=146;
, n: T& x& [+ p) d5 ]
@SUM(ROOM|price#GT#161 #and# price#LT#200:x1)>=85;
' L& Z5 v/ F5 m- j$ [# P
@SUM(ROOM|price#GT#201 #and# price#LT#300:x1)>=53;
1 H+ d9 L8 B, u8 h5 q0 H& \' E. Y, x
@SUM(ROOM|price#GT#120 #and# price#LT#160:x2*double*2)>=203;
5 V8 ^) d8 W# b5 k$ A- P- r6 N
@SUM(ROOM|price#GT#161 #and# price#LT#200:x2*double*2)>=133;
% s/ F\" O# H\" ?5 x6 J5 V( \
@SUM(ROOM|price#GT#201 #and# price#LT#300:x2*double*2)>=43;& f% z5 s4 W# t- ~, [
@FOR(HOTEL(K):chose=@IF(@SUM(ROOM(I):e(K,I)*(x1(I)+double(I)*x2(I)))#GE#1,1,0));; b' ^4 I) R2 ~3 }5 I- _- B3 Z
hotelsum=@SUM(HOTEL:chose);
9 P. J0 W, Z5 e& {4 L- y! C% N
costall=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i)));$ T( A4 i- T9 R\" q
END
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