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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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8 V Y; x( t1 b8 f
MODEL:
9 m7 s+ m' Q0 U9 I$ P: p; i
TITLE 宾馆数目;
. k1 p, ]8 s. V% @2 I
SETS:
- U$ F/ u# S8 T ?, m) n/ ]
ROOM/1..32/:price,c,double,x1,x2;
; f0 _. T5 V6 C) u& r& u
HOTEL/1..10/:chose;) J+ l\" s o\" ~+ j9 r
LINKS(HOTEL,ROOM):e;
9 J, o. 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/;
5 C1 e$ ~0 y H' {: j. `\" a3 Y9 |
ENDSETS3 f$ M8 e) B3 A* R9 W
DATA:
0 H3 a. R\" u) P4 G5 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;
* b, R* G( u/ x4 F- g/ 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;& `6 m8 [, z3 m
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;
- i0 Z& G: Q5 [& ~& }: ^, ?& r
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( w) i- ?9 w: s$ c+ x8 s0 a\" s
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
% |0 t1 y* R% I9 O& e% 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
) V7 A; p& ^& s* V S F2 h+ c
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! x! Y( g+ D/ V
0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,00 W\" a; I* j$ R* Y/ o) {5 s) z
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( I# d6 m& t, Y! d% E6 I. L
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& {7 T! M# J% t, X) x/ D2 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$ V1 c- `+ f, w: ]( C
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,0,03 y) i4 Y, a- A1 s# D/ n9 \, B) Z* 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;# w5 D\" Q2 _+ z4 x! h
ENDDATA
9 P9 n2 @% c\" J& U2 l\" J7 |/ |
MIN=@SUM(HOTEL:chose);+ ]! N; i, }' {1 G1 Q: ~
@FOR(LINKS:@BIN(e));3 u, X* C0 V1 l) _& x7 |3 o. y\" a
@FOR(ROOM:@GIN(x1);@GIN(x2));
3 Y. y& L/ T, j8 B5 i1 ^, y5 l8 e
@FOR(ROOM:c>=x1+x2*double);2 _/ {& ~- J\" l7 w
@SUM(ROOM|price#GT#120 #and# price#LT#160:x1)>=146;
+ B! ?! t\" ] s# z% C E# D
@SUM(ROOM|price#GT#161 #and# price#LT#200:x1)>=85;6 w7 ~1 W7 S% d l
@SUM(ROOM|price#GT#201 #and# price#LT#300:x1)>=53;, U5 J( Y* F4 M1 X* y* t( m
@SUM(ROOM|price#GT#120 #and# price#LT#160:x2*double*2)>=203;
- p# Y$ w! I/ n5 T2 D
@SUM(ROOM|price#GT#161 #and# price#LT#200:x2*double*2)>=133;5 Z, K2 W, F/ t9 c& G4 U( Y
@SUM(ROOM|price#GT#201 #and# price#LT#300:x2*double*2)>=43;8 {- l/ w2 Z p2 Q' `
@FOR(HOTEL(K):chose=@IF(@SUM(ROOM(I):e(K,I)*(x1(I)+double(I)*x2(I)))#GE#1,1,0));! \6 S# L* }- O' d K; G6 o+ W
hotelsum=@SUM(HOTEL:chose);
^. b/ N( h+ D! a4 B4 E) A
costall=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i)));+ J7 h6 R* X5 P( o1 O
END
6 |# r. T3 L7 C: d, C

复制代码

为什么这个得到的结果反而比这个还差？

6 \+ T# H\" O1 o* U3 V$ j5 t
MODEL:4 A3 A# z/ N6 F
TITLE 宾馆数目;- |; J6 t; v6 T }8 a
SETS:
\" z7 O# m2 h* r. o7 `
ROOM/1..32/:price,c,double,x1,x2;1 W$ Z5 {. L$ \8 _
HOTEL/1..10/:chose;% S; A# S& P- Y5 S
LINKS(HOTEL,ROOM):e;
% k) l& x6 |1 ]* v8 N$ M3 ?4 {- 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/;( a4 }/ ], E\" u* }9 ~
ENDSETS
$ L. n) r+ Q8 w
DATA:4 t/ f7 m5 [7 M& y- C
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;5 W) C& z\" ~8 s9 ~5 u6 C& a, s
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;
7 P- V9 N+ C( g; u- P6 ^7 h! 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;7 |, z& ?: r( S# Q$ b
e=1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,08 \3 W+ z3 @5 z( E; w! V# J& \/ a+ a
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& y% l' P# O3 U$ E8 l- F/ 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
9 b8 c% z- w$ ^! e
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
% Q7 v+ H: B' x: q1 C1 `
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
5 D9 o1 I; a4 M; n9 ^, p2 R( x
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& C% Y) V8 c8 q! M
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,02 W% i7 j% C$ l3 _
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
: H! z0 O9 u1 s$ P$ I$ I; Q
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,0,08 M+ h8 i, g\" i\" 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;
4 D( d' \3 c2 D! k% J \\" R7 g
ENDDATA ~6 A: o( v6 {& e5 F3 r1 u
MIN=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i)));
! j0 @) m# f* e( z& Q- F
@FOR(LINKS:@BIN(e));
! j5 { @\" |8 y4 E0 g D
@FOR(ROOM:@GIN(x1);@GIN(x2));
( `# W% \3 u0 v' q
@FOR(ROOM:c>=x1+x2*double);
8 }9 X1 L0 P2 @7 k0 M
@SUM(ROOM|price#GT#120 #and# price#LT#160:x1)>=146;
\" v) d; u8 r8 M* y. L2 }9 r# F3 y
@SUM(ROOM|price#GT#161 #and# price#LT#200:x1)>=85;
2 P( B4 y\" K. I: D+ M\" O y
@SUM(ROOM|price#GT#201 #and# price#LT#300:x1)>=53;) }9 H; z; l: i6 ]4 c4 r1 Z* p* o
@SUM(ROOM|price#GT#120 #and# price#LT#160:x2*double*2)>=203;
. o. ]7 `2 d4 g4 t7 `
@SUM(ROOM|price#GT#161 #and# price#LT#200:x2*double*2)>=133;& H2 l4 e, A- ?\" W; Y\" J/ y1 z
@SUM(ROOM|price#GT#201 #and# price#LT#300:x2*double*2)>=43;( `7 }4 b& S. y0 _9 R. U
@FOR(HOTEL(K):chose=@IF(@SUM(ROOM(I):e(K,I)*(x1(I)+double(I)*x2(I)))#GE#1,1,0));
+ G$ R( {8 z- _ F
hotelsum=@SUM(HOTEL:chose);
+ t! U\" P+ ^( x
costall=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i)));\" F0 c+ S\" [+ m3 _4 |
END4 m\" ~+ c8 C% Z0 k