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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:
) {& L1 } D0 a# H8 d3 }
TITLE 宾馆数目;
7 @4 d& [1 j) a7 r/ g
SETS:+ g! [4 c2 Y f8 i2 t
ROOM/1..32/:price,c,double,x1,x2;1 a. n1 k' m; O8 P' @
HOTEL/1..10/:chose;
5 w; v& x& W2 i/ Y7 L$ p
LINKS(HOTEL,ROOM):e;$ C# k! P# Z3 J( V6 k0 i8 h
!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/;
6 g/ G; M2 s; o3 h' B9 h& I3 w9 @
ENDSETS
4 g) c: l1 e m8 u& f
DATA:& U2 O$ g; e9 N* v
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;
, A3 e$ C. h3 B
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;
5 Y* V$ W: r7 I* P
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;
( B2 l# z$ a- Y8 h4 b% P2 E, \
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& X/ d0 D1 O) j( F6 {3 V
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
; K6 `# r) a0 C- P
0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,00 b0 o8 C' @/ \5 y
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
j6 b/ `3 `+ E; ?& ]. y
0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,00 [! o# n, q& v) n
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* v- u3 Q7 }) T6 y% j' b
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. x5 N% T4 j3 U! I/ W `- I
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
% _8 {& O+ G, g6 a/ Q2 z4 ^8 Y
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,0,0 ~7 x0 D6 M% n
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;% B1 w4 F+ e# ]
ENDDATA0 x/ [9 E$ z. O6 W e
MIN=@SUM(HOTEL:chose);! X- T\" }* O7 T+ V4 p2 k0 j. e! V
@FOR(LINKS:@BIN(e));
# }4 r\" N% U0 G9 U2 D1 n
@FOR(ROOM:@GIN(x1);@GIN(x2));
* e# N\" {9 q1 G5 @$ O3 g, f, o2 v
@FOR(ROOM:c>=x1+x2*double);; z9 h) k3 ?1 S
@SUM(ROOM|price#GT#120 #and# price#LT#160:x1)>=146;5 m4 Z: {7 ~- P3 G: w% N
@SUM(ROOM|price#GT#161 #and# price#LT#200:x1)>=85;
+ C9 p4 P# M0 T4 s1 ^6 R1 J
@SUM(ROOM|price#GT#201 #and# price#LT#300:x1)>=53;
0 {0 j- L* v% P! c
@SUM(ROOM|price#GT#120 #and# price#LT#160:x2*double*2)>=203;+ X2 p\" x# k+ N m\" J
@SUM(ROOM|price#GT#161 #and# price#LT#200:x2*double*2)>=133;
; q7 d5 N) }1 l6 W9 W8 |
@SUM(ROOM|price#GT#201 #and# price#LT#300:x2*double*2)>=43;
; c3 {# ?2 W$ Y% a
@FOR(HOTEL(K):chose=@IF(@SUM(ROOM(I):e(K,I)*(x1(I)+double(I)*x2(I)))#GE#1,1,0));\" Q. |0 \/ D; @
hotelsum=@SUM(HOTEL:chose);
7 M/ A) W. @1 O6 _
costall=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i)));
! T' a9 S\" |1 t2 R1 I1 C
END, k7 t5 ?, K: E) V2 z/ ?# T

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:
8 x7 ]. x: P1 ^% w/ E
TITLE 宾馆数目;
1 v& ?+ E+ ^ c0 ?
SETS:
9 f/ ^& Y+ I: }6 V7 b( @/ Z9 |
ROOM/1..32/:price,c,double,x1,x2;
. v. ~/ E\" e5 s
HOTEL/1..10/:chose;# b8 r, Z5 E\" p i
LINKS(HOTEL,ROOM):e;
# e8 x8 B3 X. Q& L- `
!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* u+ J- E8 P( H+ j
ENDSETS
( [3 w0 K5 D/ g( ?1 f0 t+ D9 R
DATA:
9 D& R- e/ @& ]6 v/ x+ \! R8 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;( c5 b8 G& l' Q* ^/ B/ y3 `- n
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;* B$ U: b9 X$ w: i, i
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;3 U$ }: q( }( I' n% z# M
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
2 j6 G/ T1 J% @- B1 Y1 @
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
' x# f1 X( n6 J. n( {* \
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
1 d& `8 K) p% T- R- y. o- C; {4 r
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
* x/ g\" R3 E5 V7 I, }$ `
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 C( P, u4 C- j' }1 j% W% i) H/ i
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+ d- x1 Q% h2 p9 r: L3 |' D2 \
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
1 {: f5 j2 S& ^; y3 ]
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( o8 B* a0 g0 ?4 u* R# @# m+ f+ @
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,0,0
3 |1 T9 ^0 t# ]1 t0 L& `& ]1 t
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 |3 W1 l% Y5 r3 E( [
ENDDATA, _* L! [2 T: h4 ` R; ?- P/ G% n
MIN=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i)));\" F2 ^/ [' ^* N( `8 T# O
@FOR(LINKS:@BIN(e));
( ]1 |' k+ t/ Z8 G: `3 Y) ?
@FOR(ROOM:@GIN(x1);@GIN(x2));
, H\" U6 o* w9 V* `$ R: Z, z
@FOR(ROOM:c>=x1+x2*double);+ t$ v; i% g$ c\" h# u
@SUM(ROOM|price#GT#120 #and# price#LT#160:x1)>=146;
' T0 A6 \1 \( c( o. `: [' p
@SUM(ROOM|price#GT#161 #and# price#LT#200:x1)>=85;1 y; U4 e( v\" ]5 G% Q
@SUM(ROOM|price#GT#201 #and# price#LT#300:x1)>=53;
, s) G. s! f2 R' _$ O$ |. G) D
@SUM(ROOM|price#GT#120 #and# price#LT#160:x2*double*2)>=203;
% v4 F, r. P' C6 T. l
@SUM(ROOM|price#GT#161 #and# price#LT#200:x2*double*2)>=133;
) B2 J! K1 I3 u
@SUM(ROOM|price#GT#201 #and# price#LT#300:x2*double*2)>=43;
6 m$ u, t0 ]- B% \
@FOR(HOTEL(K):chose=@IF(@SUM(ROOM(I):e(K,I)*(x1(I)+double(I)*x2(I)))#GE#1,1,0));
% Q4 @3 ]4 G$ _4 J3 P/ r
hotelsum=@SUM(HOTEL:chose);
/ J8 D6 G2 a( l9 ^ c
costall=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i)));9 c' J' l0 D: }; e& U' M
END
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