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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:+ u: R, ~7 c% h4 {7 l( }, ~
TITLE 宾馆数目;8 c6 z0 u ~# K# N/ `
SETS:$ A. _( G! z4 [7 ^9 G' W. X) q
ROOM/1..32/:price,c,double,x1,x2;
- d\" F& A+ j4 j6 [# @
HOTEL/1..10/:chose;
Z- u1 r. O% j$ |8 W# W
LINKS(HOTEL,ROOM):e;
9 D* u) E9 q2 x( E
!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 w, _( n! [9 W
ENDSETS
6 P* v5 s+ O2 @. m0 c* A( c! j
DATA:
8 Q/ `! s5 k! m% _- @2 Q
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 N6 Z( B) A% R: 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;
! p\" U9 l& M# {, ]) Y o) Q
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;. ]) o6 ^: c. ~& _& R9 B
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
7 n0 |; Y8 a1 e# e4 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
3 m' w! v) s: M9 G
0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,09 i9 l u B/ n+ v9 b$ f
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
% e8 M, [2 L\" X2 C7 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
\" m5 J/ }, ~. w% b
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
4 K# V( b6 [1 c$ c6 c( d0 t- E
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
8 k) P* C, R x: q* t4 _
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* y3 g/ I+ _$ G# q8 t
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,0,0: S9 P- f9 R3 J5 r7 A# c8 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;
, ^% L4 D3 U3 R
ENDDATA
% J' P8 Y% X! H3 e2 n9 ?
MIN=@SUM(HOTEL:chose);0 ^8 k8 W/ J& |; w4 V
@FOR(LINKS:@BIN(e));
' e# g0 N/ e; g\" ?. \5 J
@FOR(ROOM:@GIN(x1);@GIN(x2));
4 X, m& }; T3 t8 Z
@FOR(ROOM:c>=x1+x2*double);
4 Y, H6 ]' z% l. l& C
@SUM(ROOM|price#GT#120 #and# price#LT#160:x1)>=146;
/ \& y) H3 J# y! s& T
@SUM(ROOM|price#GT#161 #and# price#LT#200:x1)>=85;5 o$ y% ?, `' T/ I+ \9 l) q
@SUM(ROOM|price#GT#201 #and# price#LT#300:x1)>=53;0 d% p/ P& U$ o0 q
@SUM(ROOM|price#GT#120 #and# price#LT#160:x2*double*2)>=203;
$ t! `3 u7 [8 o, I, }
@SUM(ROOM|price#GT#161 #and# price#LT#200:x2*double*2)>=133;3 o9 w/ y4 A6 N
@SUM(ROOM|price#GT#201 #and# price#LT#300:x2*double*2)>=43;* H0 Z; b; C% S& F, r4 y8 {
@FOR(HOTEL(K):chose=@IF(@SUM(ROOM(I):e(K,I)*(x1(I)+double(I)*x2(I)))#GE#1,1,0));
1 O- x$ _) p) y7 Y/ e9 {) G. A
hotelsum=@SUM(HOTEL:chose);
a# M0 ]2 ]2 b4 p
costall=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i)));$ i0 q4 X\" W! A( p' B
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？

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MODEL:) x3 j) J% c6 s) | ^' t! y; t
TITLE 宾馆数目;, t( c; u* v0 P @4 C4 z, x& d
SETS:6 I1 n- _) t- o
ROOM/1..32/:price,c,double,x1,x2;. W6 p, c+ J5 P
HOTEL/1..10/:chose;
( `/ f6 J$ {0 |& `: X
LINKS(HOTEL,ROOM):e;9 h( o( b* U8 o& W6 G/ n
!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/;
8 h6 N! Q1 F0 e# i0 `
ENDSETS
4 B2 Q7 i! O# c) w5 w' J- j% @3 g
DATA:
2 {7 [* b$ w! z7 l
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 M\" v4 n: `: I8 c8 L1 ^: G# o1 f. l1 y
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/ Y: j' L# ^- K\" N e
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;
/ o1 q; r3 z* i* H, _. V
e=1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,02 S3 u2 ^5 _& p V% e& 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
, t+ F- }0 v& l+ e* O- _
0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,02 A\" ~. m$ C% O\" U0 L. a! Z
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
* |# B: S$ z$ X' [' ]
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& v- ^3 {( ?0 e! M. l- S' ?
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
9 ?. E3 K9 _3 ?6 \\" s
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,01 \# z, j t9 g) \4 e1 d5 t& z* l
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,04 A/ ^0 r, n6 E
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,0,00 U; j\" z1 b( A8 _4 [7 _) 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;
6 Z\" l! w( z; _+ ~8 e5 Y
ENDDATA) c* e9 W/ n& H\" E2 J
MIN=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i)));: l; e) B% f6 x5 J: T) t
@FOR(LINKS:@BIN(e));8 r1 Y8 C& |% ^. e# h\" T* N _8 B
@FOR(ROOM:@GIN(x1);@GIN(x2));
% Z i2 x1 A3 Z8 m1 J
@FOR(ROOM:c>=x1+x2*double);/ J# q9 h\" e$ t* N) A+ J$ N; G
@SUM(ROOM|price#GT#120 #and# price#LT#160:x1)>=146;
7 K$ C0 H6 s) y/ w9 y
@SUM(ROOM|price#GT#161 #and# price#LT#200:x1)>=85;
7 b( K8 a0 v4 } S
@SUM(ROOM|price#GT#201 #and# price#LT#300:x1)>=53;' w% E3 y3 l/ h* J, `4 P7 F8 f6 {
@SUM(ROOM|price#GT#120 #and# price#LT#160:x2*double*2)>=203;
/ Z# d& o. M$ z, L0 u. r7 H4 @
@SUM(ROOM|price#GT#161 #and# price#LT#200:x2*double*2)>=133;
9 n& H: i5 h @ A5 t$ S
@SUM(ROOM|price#GT#201 #and# price#LT#300:x2*double*2)>=43;5 c% Q3 `; T+ J/ A) p) x1 O+ B1 l
@FOR(HOTEL(K):chose=@IF(@SUM(ROOM(I):e(K,I)*(x1(I)+double(I)*x2(I)))#GE#1,1,0));( P3 v0 v5 V7 u9 D, \5 ]7 A
hotelsum=@SUM(HOTEL:chose);7 I. m9 @0 g& u3 W( g( c
costall=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i)));) @3 x7 Y! W( e2 A
END
8 C4 _1 k0 x% F