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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 |正序浏览

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MODEL:- V7 @0 L. j\" K4 O\" G, U
TITLE 宾馆数目;6 M3 C; B/ ?2 h% G0 F
SETS:
7 Y3 q! f\" W; \7 l/ T
ROOM/1..32/:price,c,double,x1,x2;! j1 h, r: T9 F* [
HOTEL/1..10/:chose;
, ?$ y9 _; F \$ w
LINKS(HOTEL,ROOM):e;5 j8 u1 a x0 e5 ?0 n+ D
!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/;, R/ |4 V q2 o( O1 d2 a0 `
ENDSETS\" }1 k6 ~- {. x, N& ~
DATA:8 ~2 H/ c, Z, }% W
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;6 \7 H$ V% Z# a7 d) Q% p( t# y) x
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;( j% u8 L\" l2 J* _4 W0 r3 v; N
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;
1 f! H. {- L- u. ]8 X
e=1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,04 ~ ]# J6 B* s4 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
4 \, r0 @& {- Z/ D5 C
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. @+ i/ ?: ~) M3 M
0,0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,01 G$ k7 m- |& _
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- _' @' N7 S. S# x4 w, p
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) V2 d* `6 }
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, V% W4 O; n+ h, b: S* x
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
s* a: H' [& ~* B
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
# O$ H\" I: A) Q3 H1 G
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;
, w4 K S5 n0 b
ENDDATA
6 m0 j6 t) E& ?( g3 s8 _7 N- Z
MIN=@SUM(HOTEL:chose);$ O# i1 Q: ?( i( v4 ^4 _ i
@FOR(LINKS:@BIN(e));
% ]) ?2 F& N# |; P1 D; ~) Z$ c. j: A
@FOR(ROOM:@GIN(x1);@GIN(x2));
. P: |\" [' A( e
@FOR(ROOM:c>=x1+x2*double);
6 F& ~\" N! E9 G5 \- D( t
@SUM(ROOM|price#GT#120 #and# price#LT#160:x1)>=146; ~8 ~$ C ~2 H( P% O; U7 q2 E+ I3 W
@SUM(ROOM|price#GT#161 #and# price#LT#200:x1)>=85;/ f/ b4 g0 l0 B( k {
@SUM(ROOM|price#GT#201 #and# price#LT#300:x1)>=53;5 f1 ~2 O\" X) N0 ~9 b3 V9 y
@SUM(ROOM|price#GT#120 #and# price#LT#160:x2*double*2)>=203;
2 U. z0 Y0 F* @* k7 L N. @: d4 h
@SUM(ROOM|price#GT#161 #and# price#LT#200:x2*double*2)>=133;
; }0 ?* M c( e) n5 A4 M
@SUM(ROOM|price#GT#201 #and# price#LT#300:x2*double*2)>=43;
7 Q% t; Y3 \4 {8 j4 i
@FOR(HOTEL(K):chose=@IF(@SUM(ROOM(I):e(K,I)*(x1(I)+double(I)*x2(I)))#GE#1,1,0));
2 j! ~( l3 h. D
hotelsum=@SUM(HOTEL:chose);
1 }1 P2 V# u% d& W/ o
costall=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i)));
/ a+ l* h* y9 z2 f9 j
END& J; e( |4 n+ ^; A\" `

复制代码

为什么这个得到的结果反而比这个还差？

3 l% E- r, I$ Q) \6 R$ x( k v
MODEL:+ ~1 N% X# {8 ]+ e) W) b3 e
TITLE 宾馆数目;# ~; I0 H5 o# {! z
SETS:
; ]\" c\" g1 ]: ~) L
ROOM/1..32/:price,c,double,x1,x2;! f9 Q' f! ], Z1 h7 Q3 v* S3 g
HOTEL/1..10/:chose;+ Z' Z$ ?9 b) b' W
LINKS(HOTEL,ROOM):e;
! K F. w% B6 Y7 D1 {7 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/;9 m# y2 f; C\" k. a8 I
ENDSETS2 x! V5 a4 R/ }2 ^( x* J: L6 d
DATA:) g f: i5 f- G. `) @
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;+ D' B( h/ I1 J4 o i* h4 r
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;/ r3 D: o; i7 L0 ~( h
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;0 }4 y2 K, P1 p, ^ p# P/ U F! ~
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: B- K5 B+ V' r* E) p
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% v2 J3 N1 {5 Q. d
0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,08 \8 |( g) N' \1 M8 U2 t
0,0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,05 z I# T$ B: 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
( N; ^ a% |4 H) e. \
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 ~( Y( w+ s9 U\" I3 T- R6 `
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
R; B+ P; a% ]/ G& m y
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! V) w/ x& Z9 }, U5 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
4 C0 g9 V5 @: F% o* y* X7 [
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;
\" R/ e' M- @% ~0 s1 s
ENDDATA
: C2 F$ ~8 W3 k6 ?4 G9 i
MIN=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i)));+ C( k1 W' k8 m3 |
@FOR(LINKS:@BIN(e));
# F i2 V/ _5 k1 N; @; ~2 C
@FOR(ROOM:@GIN(x1);@GIN(x2));
6 d\" v0 y% e# f
@FOR(ROOM:c>=x1+x2*double);8 e1 }- j* E1 o, a4 M4 i. V
@SUM(ROOM|price#GT#120 #and# price#LT#160:x1)>=146;7 u. o/ S+ y6 M. L
@SUM(ROOM|price#GT#161 #and# price#LT#200:x1)>=85;5 _7 s6 `! g& y8 `
@SUM(ROOM|price#GT#201 #and# price#LT#300:x1)>=53;$ e$ H7 w7 s\" u3 [8 C2 v
@SUM(ROOM|price#GT#120 #and# price#LT#160:x2*double*2)>=203;
$ C0 t4 s7 _, K
@SUM(ROOM|price#GT#161 #and# price#LT#200:x2*double*2)>=133;
* C% C, ~9 B4 y6 V0 T
@SUM(ROOM|price#GT#201 #and# price#LT#300:x2*double*2)>=43;3 [! y9 @3 Z+ L% n. L
@FOR(HOTEL(K):chose=@IF(@SUM(ROOM(I):e(K,I)*(x1(I)+double(I)*x2(I)))#GE#1,1,0));
# e; W7 ]# d, Z# N% k% g! O6 i8 E
hotelsum=@SUM(HOTEL:chose);) i9 Y; _3 b) b( S( N5 A\" J6 H
costall=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i)));7 _3 y, H- k- e0 k! n+ z
END
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