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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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\" r( L; M' C o& P9 k( C2 e
MODEL:7 O4 N: U/ @. F0 j& R ~
TITLE 宾馆数目;
2 R$ p: i# |+ c; ~; B
SETS:6 I9 R2 T* p+ [* p8 ^6 ]0 j
ROOM/1..32/:price,c,double,x1,x2;& b$ ]; w4 X- G! k# s, C
HOTEL/1..10/:chose;
5 f2 ]& o2 V9 A
LINKS(HOTEL,ROOM):e;- g& \. J- J. E7 ~
!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 ^# w6 p2 _) d# ]4 \6 M
ENDSETS
, Z# t/ l6 ]* F5 L1 T5 I
DATA:2 g3 d& k! F( F- E\" b
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;1 _! J: o- |, o; }: Q
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 P% q5 ]+ A) 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;' t$ l, T* |9 E* r$ e/ m+ L
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+ E4 o: V\" z3 T b* F/ C\" c
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
) q M\" U O2 f) \% b
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% `! z: d, I$ 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. v F2 q2 ^2 ~% [4 `/ S1 V
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
. l4 K, E# T# l0 p$ G2 E9 ~
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 `! Z% n* Y! ^% F' c/ D# 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
9 N/ r, W4 t6 U p$ L) J6 f
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: U: z5 s$ H0 D$ l) 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
. W1 {; W( ? 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;/ j. _. c9 ~, }0 G/ m% o
ENDDATA* t- Z( f: P/ Z) S7 E2 { m; U
MIN=@SUM(HOTEL:chose);
2 m% G+ e! Y2 F- m* P4 X
@FOR(LINKS:@BIN(e));& R# S0 h: {, E( ?
@FOR(ROOM:@GIN(x1);@GIN(x2)); I% R2 c\" e' J! ?, _- W6 w
@FOR(ROOM:c>=x1+x2*double);( c' {; G! A$ I* q: |1 K
@SUM(ROOM|price#GT#120 #and# price#LT#160:x1)>=146;! v* M' k4 J* w$ x$ e
@SUM(ROOM|price#GT#161 #and# price#LT#200:x1)>=85;) S3 O X: x9 l
@SUM(ROOM|price#GT#201 #and# price#LT#300:x1)>=53;7 X2 H, W! M; n
@SUM(ROOM|price#GT#120 #and# price#LT#160:x2*double*2)>=203;
# F0 L8 h\" z7 G: v
@SUM(ROOM|price#GT#161 #and# price#LT#200:x2*double*2)>=133;
, W; U% R4 G8 }( g+ `! d d\" c
@SUM(ROOM|price#GT#201 #and# price#LT#300:x2*double*2)>=43;. u# [! u4 j. Z' _* A x, b# P
@FOR(HOTEL(K):chose=@IF(@SUM(ROOM(I):e(K,I)*(x1(I)+double(I)*x2(I)))#GE#1,1,0));
& _2 j' M! s9 t
hotelsum=@SUM(HOTEL:chose);
( d ~\" f9 e, b3 @6 o
costall=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i)));
2 k0 y* p7 W* H
END7 d; E) {- F. p

复制代码

为什么这个得到的结果反而比这个还差？

0 t2 b7 u; F# D( ]! R4 N( n0 w4 `& b
MODEL:
7 W3 l/ D. v9 `7 N, Y2 p9 w
TITLE 宾馆数目;
3 ]: I, ]8 {! ^+ y! f
SETS:, w# H3 ~' A* Q! n4 \2 K
ROOM/1..32/:price,c,double,x1,x2;
# L) L/ h) E! s) f w
HOTEL/1..10/:chose;1 d$ L: i- W, ?, N7 ~- D1 v/ ^
LINKS(HOTEL,ROOM):e;
& \1 _( I3 Y2 _) Z
!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/;
U( c% w, D1 }* b3 o4 i
ENDSETS4 z4 [7 t6 ]5 z
DATA:* T# j+ D( u1 Y8 x7 \# ]
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 T a+ a4 Z\" R0 R3 }( Z
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;( y& f\" M. b: R
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;
! }7 M& B0 h9 m8 X, q- [# g
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& v Q4 U e, I2 x
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 u; o4 J0 k( E: T5 M4 x/ q: 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; p/ b\" N) e6 x
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
* L\" t\" b5 i P- o( \, B8 D1 U; K
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
: x0 f\" A/ c6 W
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,09 m3 T7 p& Y8 A1 ?- h g7 v2 X4 N
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 A: o1 h5 Y) [/ F+ G
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
! @& ^. G8 v! U# i. e# R\" d! u
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 H- g% l) A; i5 t! E& h
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;- d: E8 v3 h! W
ENDDATA$ S6 x0 K. a) H. l
MIN=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i)));7 H$ o* p P' p k; @\" M9 X! n- w, o
@FOR(LINKS:@BIN(e));9 g% {5 H+ B+ U i\" K* ~4 {% k! L
@FOR(ROOM:@GIN(x1);@GIN(x2));
* f5 L, a# M$ Z6 \& z$ }\" H
@FOR(ROOM:c>=x1+x2*double);
5 D\" z* ~/ H- z# l\" o
@SUM(ROOM|price#GT#120 #and# price#LT#160:x1)>=146;
- x$ ]6 _: e, x( T
@SUM(ROOM|price#GT#161 #and# price#LT#200:x1)>=85;( c [/ ?5 M/ |9 H7 o5 i1 A
@SUM(ROOM|price#GT#201 #and# price#LT#300:x1)>=53;; W2 o; B& X5 N. e$ [
@SUM(ROOM|price#GT#120 #and# price#LT#160:x2*double*2)>=203;
% {8 s( a }' a+ x+ H) c
@SUM(ROOM|price#GT#161 #and# price#LT#200:x2*double*2)>=133;
9 }' r5 w, v i1 z8 P. M! ?9 F0 V
@SUM(ROOM|price#GT#201 #and# price#LT#300:x2*double*2)>=43;
, z: E8 A X2 n
@FOR(HOTEL(K):chose=@IF(@SUM(ROOM(I):e(K,I)*(x1(I)+double(I)*x2(I)))#GE#1,1,0));
- p2 E# B9 [7 i
hotelsum=@SUM(HOTEL:chose);; z' y: u, h6 A2 `4 j% O& ?% f
costall=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i)));
8 f7 K/ i% q) ?* _- h
END! @. \2 t: f( }; i