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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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MODEL:
& ?7 W! a2 y6 ^6 n\" @
TITLE 宾馆数目;4 p\" P( C6 l8 r4 c7 I
SETS:( Z5 y/ q' M, @- ?6 |$ i
ROOM/1..32/:price,c,double,x1,x2;
3 k# O; G7 Y2 J
HOTEL/1..10/:chose;
0 Y( G4 K A, `: ^7 y( e
LINKS(HOTEL,ROOM):e;0 `* d. x4 |! S' @) z, G
!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/;5 A6 j. u! y0 l\" Y/ Y4 y3 A/ K- \% S
ENDSETS) X: ?0 [ M& @
DATA:) A' _0 z- t% i' r1 | 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;
6 ]+ j1 w! `. ~+ B5 h
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;
# A) T' n% r7 }8 l
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;
' R& X) ^( Z* k
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
4 F( e8 z* v+ V- V
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
, H3 q z) G1 j- _
0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0: Q* \7 j& @2 K6 A, }3 J8 x
0,0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,00 x d: s3 b* p
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
% L) l- V! p2 t( 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$ E8 G n/ @& t1 f& `/ m
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
! a4 s# i! k- W
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
3 w( i( f' c- e5 E( H, c! Z0 v
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
; I' o2 Q8 e4 D
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;7 {$ p# v7 {6 R: g% [- ~
ENDDATA; z- p# K+ X$ ^! ~& G\" ?! v; z
MIN=@SUM(HOTEL:chose); ^! E* h* F% D9 h* c
@FOR(LINKS:@BIN(e));
\" H+ a( Z1 Q* }9 Y\" F
@FOR(ROOM:@GIN(x1);@GIN(x2));2 m' ^! w- h% `1 I8 c
@FOR(ROOM:c>=x1+x2*double);
. ]- d+ _/ U. [2 C\" N g7 ^$ H, S
@SUM(ROOM|price#GT#120 #and# price#LT#160:x1)>=146; C1 C- N$ Y+ y. s
@SUM(ROOM|price#GT#161 #and# price#LT#200:x1)>=85;
9 ^\" h6 D& M$ [3 |
@SUM(ROOM|price#GT#201 #and# price#LT#300:x1)>=53;
( d1 N/ Z; I. W( o7 F( E
@SUM(ROOM|price#GT#120 #and# price#LT#160:x2*double*2)>=203;
8 c: M) _ I' t/ f/ F\" r* @
@SUM(ROOM|price#GT#161 #and# price#LT#200:x2*double*2)>=133;
, M7 q9 V+ }; R U1 {* B& j
@SUM(ROOM|price#GT#201 #and# price#LT#300:x2*double*2)>=43;& ?# ~) W' E: m\" R3 ]
@FOR(HOTEL(K):chose=@IF(@SUM(ROOM(I):e(K,I)*(x1(I)+double(I)*x2(I)))#GE#1,1,0));
# Y/ V+ v, R. i/ R- s) }- T, }! t/ Q
hotelsum=@SUM(HOTEL:chose);; r# z& X4 G& O1 @1 o& T\" D
costall=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i)));4 {, X% y6 ~0 |4 ^ v
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:' S, y\" f$ c7 L
TITLE 宾馆数目;9 L8 ~1 @4 g+ w
SETS:
3 Y. O/ w0 {' m( @
ROOM/1..32/:price,c,double,x1,x2;( a, ?: b$ W6 w\" G; N: c$ J
HOTEL/1..10/:chose;6 u( k7 ~6 X* m4 p t; C
LINKS(HOTEL,ROOM):e;
* p3 \; }\" r7 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/;
$ z6 q! x+ |. U* R
ENDSETS
1 j6 _\" T( O6 W- z3 h
DATA:
; m* i$ g/ t) r6 P5 \
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;
' |# ?+ Y6 K/ \7 x' L) 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;8 ?\" U' {0 N( o4 ^4 J/ K
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;
/ r7 \: p5 H, K0 { i# \- _& f. 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
( Z* g& C/ K\" \! Z( E
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
) B; b' W! ?3 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\" {0 I: M& n' B\" H
0,0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,03 K\" K1 I; \, O- M\" U [% U8 o
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
& b! ~! t# x9 A1 W- m8 h
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\" K C. m! [7 S' F6 O; Z4 ?& }; M) m/ O; G
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
- m, A% A# d7 S D5 J: @
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- m ?! @+ w( G5 h) t% q
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$ H* n# n3 p9 A4 d
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 j) D$ p$ c. x2 _. I
ENDDATA
3 ]. E/ {4 `2 X% O' T
MIN=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i)));( ^ V6 F0 x$ y; S/ I5 a2 a8 g
@FOR(LINKS:@BIN(e));+ C& c; d5 @' T6 h% o
@FOR(ROOM:@GIN(x1);@GIN(x2));
2 C2 ? j7 _ r+ t! ], s- |
@FOR(ROOM:c>=x1+x2*double);: ~9 V2 G% a8 M0 m
@SUM(ROOM|price#GT#120 #and# price#LT#160:x1)>=146;
+ A- a& G5 y: x) a\" e3 V1 q
@SUM(ROOM|price#GT#161 #and# price#LT#200:x1)>=85;
: S5 _+ g' o9 H% }6 j9 p$ r
@SUM(ROOM|price#GT#201 #and# price#LT#300:x1)>=53;
! v0 E. H% c: E% M/ \1 f
@SUM(ROOM|price#GT#120 #and# price#LT#160:x2*double*2)>=203;, I3 a% M) {4 v4 h4 A* o9 b5 f
@SUM(ROOM|price#GT#161 #and# price#LT#200:x2*double*2)>=133;9 F% b$ f( ?/ J2 k# N
@SUM(ROOM|price#GT#201 #and# price#LT#300:x2*double*2)>=43;
2 P) ?+ _% {; g% r0 c
@FOR(HOTEL(K):chose=@IF(@SUM(ROOM(I):e(K,I)*(x1(I)+double(I)*x2(I)))#GE#1,1,0));
* ^* m8 K& ]* m
hotelsum=@SUM(HOTEL:chose);
. W, T6 j0 }0 t3 V* p. e7 Y p' Y
costall=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i)));
% U, V% m) i; o9 @0 W# K5 P0 |
END
, o2 y2 Z$ E, y: [5 ?) `