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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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: u5 d; }3 [$ f% A5 N0 k& P
MODEL:5 y4 w2 P3 T$ g4 D
TITLE 宾馆数目;, y6 z$ G( e$ F\" g: f9 ?
SETS:
& o4 S B8 ~ ^+ i8 ]# _
ROOM/1..32/:price,c,double,x1,x2;
|* t6 K+ O. T& e, b
HOTEL/1..10/:chose;7 i8 C$ ^, r\" t. C- D1 f
LINKS(HOTEL,ROOM):e;; {& K4 a$ J8 W0 }! k
!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/;
7 i8 b9 ~2 C; h( D: U\" z
ENDSETS
0 Z, D2 ~' m! A
DATA:
0 r/ D2 O* n2 _9 y1 s5 u1 n* ^& d
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;2 ]8 q& b1 ]$ ^; V% x# a
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;
2 i9 Q& n5 J9 \, [
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;
% x# I* S+ i4 }* P) M# o
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
( M4 `; X2 R8 | b
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, v4 O7 e% M7 M% D. O% ^! ]% s\" d
0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
0 ~3 i5 s8 p; [- ~
0,0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,04 a3 T1 B; p\" e' P( M; o C
0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,05 z9 U) x: l3 R
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
* _3 k; B( Q$ A& H' }
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( s* [; @\" r8 Q7 H
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
5 i/ M0 M# s7 `+ ] i
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) m& `& p- m9 R5 l- N
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;( T, @1 ~6 H4 j+ N3 U\" o9 C
ENDDATA
: N+ S* B; W& E$ L: m: |( \
MIN=@SUM(HOTEL:chose);& ]6 u! J& k9 |\" m
@FOR(LINKS:@BIN(e));
& o/ p; L2 h) h, E
@FOR(ROOM:@GIN(x1);@GIN(x2));
0 L2 q% o0 r; B, I1 r
@FOR(ROOM:c>=x1+x2*double);+ y0 h' x3 W/ }# T4 O; c
@SUM(ROOM|price#GT#120 #and# price#LT#160:x1)>=146;) c2 {' F6 Z/ r& K9 f, I
@SUM(ROOM|price#GT#161 #and# price#LT#200:x1)>=85;7 g9 v- f; ?1 Y' D/ N
@SUM(ROOM|price#GT#201 #and# price#LT#300:x1)>=53;9 O Q0 D2 b: N4 U\" q' b
@SUM(ROOM|price#GT#120 #and# price#LT#160:x2*double*2)>=203;! H* b0 D2 Q, V, {; x! x6 |$ E
@SUM(ROOM|price#GT#161 #and# price#LT#200:x2*double*2)>=133;. W0 W5 \6 w0 E/ q$ e; a
@SUM(ROOM|price#GT#201 #and# price#LT#300:x2*double*2)>=43;9 k$ j; G1 s! X% g7 E
@FOR(HOTEL(K):chose=@IF(@SUM(ROOM(I):e(K,I)*(x1(I)+double(I)*x2(I)))#GE#1,1,0));& [7 m4 k' B; C; t2 K' F5 J8 L, D
hotelsum=@SUM(HOTEL:chose);; T\" [\" i! \4 }. z\" x
costall=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i)));2 o8 g0 r9 @7 h2 Q
END4 Y# p* A% _3 b# T\" `) e& Z

复制代码

为什么这个得到的结果反而比这个还差？

0 P* G2 K# S( p/ J/ t. ?# L8 s
MODEL:
3 S7 A1 ^0 ^/ J5 ^( r
TITLE 宾馆数目;. u8 `, ~5 }0 [( V- [, s
SETS:0 U) [9 f\" A3 H7 {
ROOM/1..32/:price,c,double,x1,x2;+ U7 ^* |8 d\" |& O9 `
HOTEL/1..10/:chose;
\" n8 t1 w; G& Q0 b) Z+ q
LINKS(HOTEL,ROOM):e;; A7 Z5 v k0 u, w) M0 g1 \
!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 W! Y0 H7 Z1 w' }# }' Y/ v9 h
ENDSETS
# H7 v$ b5 z9 S- E1 u* s
DATA:
2 e* {: n5 c) q- G t
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;2 _4 W7 O' i# I2 c8 p2 \
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;* Q$ x/ O, s, t) v' {& {/ C
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;# [- f( D% M; P0 @
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
\" Q- o. Y: V, l6 ]% U
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
6 J7 K( E( r) {8 z0 a. y
0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,06 _, ~. B: X, k; f$ z- N4 f# G
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
- B: A. a' y1 r6 L+ d& R8 @+ y9 B
0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,06 N* A+ P( Y/ B( R3 j
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
6 [0 k; |1 o4 Y/ }
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
% G! U. H) U: H' ?) a
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
* g\" n; ~ t9 E6 T
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, d a! z; t- 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;
9 Z! u% s+ |# y% W6 n3 z, {& I5 Y
ENDDATA& s' i( J: b a5 Z* o7 c! E
MIN=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i)));
5 i: W# f\" ^7 T8 E4 z7 _0 L
@FOR(LINKS:@BIN(e));% z; s1 t5 c7 N2 H% p7 Z
@FOR(ROOM:@GIN(x1);@GIN(x2));+ Q7 ^$ u& @/ z5 w5 ^
@FOR(ROOM:c>=x1+x2*double);; r& R3 n$ x! k7 Q ~
@SUM(ROOM|price#GT#120 #and# price#LT#160:x1)>=146; m! @1 B; l3 n4 C$ p7 [
@SUM(ROOM|price#GT#161 #and# price#LT#200:x1)>=85;
# a, S9 s5 R0 [# R
@SUM(ROOM|price#GT#201 #and# price#LT#300:x1)>=53;
) `& Y% A8 z$ O/ W, t& }
@SUM(ROOM|price#GT#120 #and# price#LT#160:x2*double*2)>=203;
+ K1 T( X3 r5 G1 q
@SUM(ROOM|price#GT#161 #and# price#LT#200:x2*double*2)>=133;
/ G9 g7 W( O\" U3 j2 k0 F8 U' t
@SUM(ROOM|price#GT#201 #and# price#LT#300:x2*double*2)>=43;
K: V2 j% h2 d3 v( @; H
@FOR(HOTEL(K):chose=@IF(@SUM(ROOM(I):e(K,I)*(x1(I)+double(I)*x2(I)))#GE#1,1,0));3 B& G5 W# B6 r; d! X. H
hotelsum=@SUM(HOTEL:chose);. o: P& P+ [ d- _6 L
costall=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i)));
4 O1 q8 X6 R2 Z0 h) J8 V5 S* s
END$ u8 e* e* w \* Z2 Q4 W