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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

电梯直达

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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:
3 w6 e% a\" h+ B1 w- _7 f; h
TITLE 宾馆数目;
. w e9 f1 c( N/ z' w
SETS:% f/ b$ D, ]- [$ G. o, s7 ]
ROOM/1..32/:price,c,double,x1,x2;
: ?9 q5 K0 W& [7 Q
HOTEL/1..10/:chose;7 A8 Z0 q* J, g7 I/ ?( k6 [. {
LINKS(HOTEL,ROOM):e;
4 F* a$ Z0 Q$ m$ 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 K! P: B X. \$ h6 P8 F
ENDSETS) O7 H) [. C/ h. @) G( f) {' _
DATA:
- \+ B& x6 u6 n d% X# G9 z+ e
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;
) v4 { [! u2 K
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;9 }; p\" r1 G2 m9 G! l( X8 Q5 Q+ j8 p: 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;! E! P$ k4 s# ?# C; h4 C& d
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
1 Q& ?) ?& k0 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
% y9 h\" a. ^8 m4 v5 W
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
/ P3 f% b$ A& q% Q3 F5 u. H
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* N G0 t ?* e% U _
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' i0 x% H& [9 S+ D3 E; t, }
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' l9 L8 Y% p4 `' a
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% S0 U- Y& A6 K9 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
, ^1 `, y: X) \1 q4 t' d/ b4 c
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( U: r2 l. _9 D! G+ z, s5 k* e. x
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;8 |( X) e8 i6 A7 j' r+ M
ENDDATA9 }+ V* S0 q. u0 J/ s, u
MIN=@SUM(HOTEL:chose);
: A0 J: ]\" u$ t. e
@FOR(LINKS:@BIN(e));\" T& y9 A9 y6 G+ B7 k
@FOR(ROOM:@GIN(x1);@GIN(x2));0 R; P H8 T\" l
@FOR(ROOM:c>=x1+x2*double);! f5 K# t/ ~! k9 t2 Y( L. k
@SUM(ROOM|price#GT#120 #and# price#LT#160:x1)>=146;
9 f* a2 l4 I\" t' {2 v
@SUM(ROOM|price#GT#161 #and# price#LT#200:x1)>=85;/ l7 H5 c: B! I. V: A
@SUM(ROOM|price#GT#201 #and# price#LT#300:x1)>=53;
; a5 D- N3 k' J/ R8 _. A7 ~. n
@SUM(ROOM|price#GT#120 #and# price#LT#160:x2*double*2)>=203;2 h. p/ D6 }1 E) W
@SUM(ROOM|price#GT#161 #and# price#LT#200:x2*double*2)>=133;
$ ^9 {! x& C7 B. b9 y
@SUM(ROOM|price#GT#201 #and# price#LT#300:x2*double*2)>=43;
) a# k/ i5 f5 ]9 u
@FOR(HOTEL(K):chose=@IF(@SUM(ROOM(I):e(K,I)*(x1(I)+double(I)*x2(I)))#GE#1,1,0));# c9 K, h6 L/ P5 ^3 P
hotelsum=@SUM(HOTEL:chose);2 r: m\" c0 v8 U: p
costall=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i)));& t3 n9 p2 j/ i3 [+ z$ o& p\" \
END3 J& c% s9 y0 V3 L

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:% [+ ^4 s3 v% M1 I1 ~
TITLE 宾馆数目;* A+ H K) L: \# W) Z\" L. e3 d
SETS:3 u' E: W& b! \' x- I
ROOM/1..32/:price,c,double,x1,x2;
0 y8 g8 C3 [- h# `8 f, E+ A4 K
HOTEL/1..10/:chose;
n0 g\" l4 {/ U5 ~
LINKS(HOTEL,ROOM):e;$ P\" P( k( O$ n# j4 j9 n- i
!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/;% L j9 N7 M4 |% X4 n
ENDSETS
& _+ I4 [! [7 K% V3 ^6 e! y
DATA:
) `7 ~* a2 ?1 {2 o% `
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 v0 V+ v5 _- C5 |
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 L# H, z) F9 | b
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;
$ Q5 i2 n* A( }' ?% ~
e=1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,06 A5 w0 g$ r* C( X: t7 P7 ~# Y/ `
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 j* Y6 \& e$ k8 X0 E
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
\" F; G$ _/ c( M2 J- X4 p
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$ R5 {2 E5 O- @: q: {
0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,09 b* R1 d- H6 q. ?
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
A8 I/ {4 q4 J% B8 w) q
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
* F1 X5 v1 C( b! j0 |; U
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
' o' K; M/ I* E/ 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
# P' ?6 o; l: j% v4 O, y* e
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1;
: q7 P\" |$ Z! c' {, B* k7 S\" j
ENDDATA4 x3 O8 u- J- U2 }\" {) I
MIN=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i)));
2 O6 F2 ^6 s1 F3 l
@FOR(LINKS:@BIN(e));
1 Z* V! c5 q0 U' ^\" c
@FOR(ROOM:@GIN(x1);@GIN(x2));% C\" O\" P. N+ V) F
@FOR(ROOM:c>=x1+x2*double);
5 s& F( e2 z6 D
@SUM(ROOM|price#GT#120 #and# price#LT#160:x1)>=146;
4 u' F8 j8 V O\" H
@SUM(ROOM|price#GT#161 #and# price#LT#200:x1)>=85;- ?2 k& c/ O/ T6 Q) ?
@SUM(ROOM|price#GT#201 #and# price#LT#300:x1)>=53;4 d, ]0 V# v) P; A$ Q# v3 s
@SUM(ROOM|price#GT#120 #and# price#LT#160:x2*double*2)>=203;; |. k0 C, l7 K: }8 I% m* R
@SUM(ROOM|price#GT#161 #and# price#LT#200:x2*double*2)>=133;
# t/ w7 z+ Z4 ]* F
@SUM(ROOM|price#GT#201 #and# price#LT#300:x2*double*2)>=43;
1 F) k% j5 o' \
@FOR(HOTEL(K):chose=@IF(@SUM(ROOM(I):e(K,I)*(x1(I)+double(I)*x2(I)))#GE#1,1,0));' A' s- d& |# U/ n& V* `
hotelsum=@SUM(HOTEL:chose);
# v C4 |\" s& u; j5 w5 s
costall=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i)));2 M0 ]\" a9 ?. `: ]
END
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