查看: 4497|回复: 2

[问题求助] 请教下大侠们lingo最优解的问题

[复制链接]

字体大小: 正常放大

coiby

2 主题	3 听众	32 积分

升级 28.42%

该用户从未签到

自我介绍: 200 字节以内

不支持自定义 Discuz! 代码

电梯直达

1^#

发表于 2010-1-10 14:45 |只看该作者 |倒序浏览

|招呼Ta 关注Ta

$ n# H8 m U% n* Z
MODEL:4 x9 ^, z1 Z+ u5 y0 I, k
TITLE 宾馆数目;4 P- Q- f: v4 F' K\" m& Z
SETS:9 u4 G9 |( a5 N- ~4 ]$ }, [
ROOM/1..32/:price,c,double,x1,x2; O; N& t7 m- v5 k G8 |- _
HOTEL/1..10/:chose;
\" e9 s* f0 P6 @
LINKS(HOTEL,ROOM):e;
1 z, n' w: _- |* c' [
!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/;( a5 O( ~3 ]7 J) \, L) b2 v& C
ENDSETS
+ w9 \+ V' @& A
DATA:
4 p0 |& r3 s\" B' K7 L- I h
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;
\" |+ V8 ?! \1 E
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 p5 i6 @& N2 L' v$ j
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;
4 i5 ?; J K9 J ?
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 B$ L* o2 ~1 U* }- P6 E4 i( X# 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
f) T) T* G\" Q. \+ c1 y$ z
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( A c& W- ~( k+ Y* }! \3 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
# W+ K8 p! |& ^9 w
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
7 _' w# t3 J L$ o% w3 f
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
k0 l# j. H+ _- O* G, j% J
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% z- y! q: F, j1 K
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0
. x/ Z# j+ l% V\" u/ } e
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,0,0
|1 ?1 Q+ ` f; f: L
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1;\" M3 f5 T, h: c3 |& M
ENDDATA
5 S; m P3 B( w/ {0 Z
MIN=@SUM(HOTEL:chose);
% C3 p# }: P/ U* ^5 ]+ f9 V
@FOR(LINKS:@BIN(e));1 [/ x' c0 e; c
@FOR(ROOM:@GIN(x1);@GIN(x2));
& d( J+ t$ ?8 C+ [( Y, W
@FOR(ROOM:c>=x1+x2*double);
* a% n4 {. }9 f2 z6 l0 F0 z: Q
@SUM(ROOM|price#GT#120 #and# price#LT#160:x1)>=146;% r8 e+ G( B: H/ \2 c* i# o; }
@SUM(ROOM|price#GT#161 #and# price#LT#200:x1)>=85;
. I4 }6 m9 B9 o% X/ ?: |
@SUM(ROOM|price#GT#201 #and# price#LT#300:x1)>=53;
; V: X4 y( @& x
@SUM(ROOM|price#GT#120 #and# price#LT#160:x2*double*2)>=203;% i1 r; R% z4 J( [9 k8 J
@SUM(ROOM|price#GT#161 #and# price#LT#200:x2*double*2)>=133;, {+ n\" R6 \; @: F- J0 |) n
@SUM(ROOM|price#GT#201 #and# price#LT#300:x2*double*2)>=43;
% q+ d& W. b& ?, P$ l9 E' l
@FOR(HOTEL(K):chose=@IF(@SUM(ROOM(I):e(K,I)*(x1(I)+double(I)*x2(I)))#GE#1,1,0));
9 Z( {: q5 `8 X
hotelsum=@SUM(HOTEL:chose);3 J7 g( M1 F- M9 h
costall=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i)));
i) C6 u/ g0 h7 A& ^
END+ ?! T8 Y: E: q/ e8 A

复制代码

为什么这个得到的结果反而比这个还差？

6 [* ^; w2 g; X
MODEL:
; p$ M\" B; f9 j* v
TITLE 宾馆数目;& T. b' D8 U9 |$ v7 r
SETS:- ^ r: o3 S2 P& [( [6 H* r) L
ROOM/1..32/:price,c,double,x1,x2;
5 K7 G4 R+ ^. b; w' h& F; N
HOTEL/1..10/:chose;
& s# P8 C' [4 U9 ?2 u5 b; x) @
LINKS(HOTEL,ROOM):e;
- N% @# y/ G. D( Y8 f/ j; j
!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/; c. F$ c\" b1 }/ j& t3 U, q
ENDSETS' c; h' t' N\" v9 H( W
DATA:
8 q! f+ A( Z: Y( H\" 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;
0 f- \4 K# y. c/ A$ F
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 }- t: c1 R n j. 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;
) M$ d! j7 |0 J2 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
* _% t( E$ X7 N! s& D& 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) a# S* F: _) b+ i\" _+ J
0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,04 p; C7 m% v* W, f, K- U# 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
0 o8 q5 o& L# F |& ^$ ^; R
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& r4 y1 t$ f5 y H$ S1 @
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
& W; z7 k$ o/ J! g/ v
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
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0/ u8 w\" Q$ j3 ~& ^% p$ P$ ?
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: o8 A( F5 O$ e& m
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;
+ ^, z) O' \9 L1 E3 u: w9 T+ C- n
ENDDATA. y9 m _) K- U) v0 E3 @/ a8 N3 M
MIN=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i)));7 l3 H5 d! Q' I: f6 `% Q5 ^0 G
@FOR(LINKS:@BIN(e));' z* d* ?\" }, O( A% \: c; r
@FOR(ROOM:@GIN(x1);@GIN(x2));1 P' Y# \' ~3 p$ ?
@FOR(ROOM:c>=x1+x2*double);
3 } a7 r7 M$ y+ s! k4 F
@SUM(ROOM|price#GT#120 #and# price#LT#160:x1)>=146;- \) D/ ]. M+ ?- z) T5 M
@SUM(ROOM|price#GT#161 #and# price#LT#200:x1)>=85;
9 ` c8 t w6 @\" |7 j
@SUM(ROOM|price#GT#201 #and# price#LT#300:x1)>=53;
, ?6 y8 M# {% T' M
@SUM(ROOM|price#GT#120 #and# price#LT#160:x2*double*2)>=203;
6 ~3 q. r1 l3 s: r& T/ g x3 t/ p
@SUM(ROOM|price#GT#161 #and# price#LT#200:x2*double*2)>=133;
, S3 y& x! R' t
@SUM(ROOM|price#GT#201 #and# price#LT#300:x2*double*2)>=43;
* j, S% Q! L4 S- o. P+ c. q
@FOR(HOTEL(K):chose=@IF(@SUM(ROOM(I):e(K,I)*(x1(I)+double(I)*x2(I)))#GE#1,1,0));
5 n! F) \3 S3 O m' N9 r' Q
hotelsum=@SUM(HOTEL:chose);5 [7 u/ |- e+ X4 S
costall=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i))); L% H\" P2 C+ B6 X
END
0 P9 c1 Y4 ~\" q4 Q* w\" @7 l