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【1】求解:
: J _$ L* Z9 h4 z G设水库A、B、C分别向甲、乙、丙、丁四个小区供水量为x11、x12、x13、x14、x21、x22、x23、x24、x31、x32、x33、x34,则有:
3 X/ ~2 w7 q8 [max 290x11+320x12+230x13+280x14+310x21+320x22+260x23+300x24+260x31+250x32+220x334 T" q$ v- g" ~9 @+ M
st2 M* E; r6 s2 r# N2 s
x34=0;' G( p! S; ~0 J8 J" z
x11+x12+x13+x14<=50;
3 I9 i. {# L# g$ ~x21+x22+x23+x24<=60;& T V; P( }( l% `
x31+x32+x33+x34<=50;( d" w: i1 f# e4 Z/ ~# j1 ~1 C
x11+x21+x31>=30;
; b) L2 Z! Q! L3 I4 Jx11+x21+x31<=80;3 m* L3 M, d! i6 r& w( w# X
x12+x22+x32>=70;) }% J- x1 M6 p/ X* d! r" X- }; K- h, g
x12+x22+x32<=140;) m S! a1 h3 ]( m4 {
x13+x23+x33>=10;+ I$ x1 H1 A- a2 a# a0 j) f
x13+x23+x33<=30;
! }; S" \. J' b8 Ex14+x24+x34>=10;
- _, P4 H: C7 D/ C& p+ d/ [x14+x24+x34<=50;
( W9 v8 ^# ^" x$ o# dend
2 I" n5 M0 v$ k* ^5 P9 R7 u' {; kLINGO程序:& k3 j1 Z$ H" b8 n/ c6 {* o) [& C
max=290*x11+320*x12+230*x13+280*x14+310*x21+320*x22+260*x23+300*x24+260*x31+250*x32+220*x33;
' n/ V- D+ C. V4 L& r9 r# q9 vx11+x12+x13+x14<=50;
( C0 Q6 Y7 b; Fx21+x22+x23+x24<=60;
( @ g8 N3 H1 `5 q+ tx31+x32+x33+x34<=50;
. U7 d/ o8 o. S8 g3 u3 kx11+x21+x31>=30;
! U5 j0 W$ h- {4 ^9 Ex11+x21+x31<=80;
' U ^% ?6 j4 r0 S2 Z, Vx12+x22+x32>=70;+ Y, M4 D- I$ l3 P8 V1 Q" u
x12+x22+x32<=140;8 A4 R) a1 q1 S8 D. J
x13+x23+x33>=10;6 W4 m, h# G) S# @4 R2 ]4 W, G
x13+x23+x33<=30;8 V1 F4 ]0 {/ o, K+ I, `$ i3 g
x14+x24+x34>=10;
$ r. H/ W! v0 Y# g* L8 b8 tx14+x24+x34<=50;
0 d+ Z7 x" S' u" t0 P1 eend
! _, V( \$ \/ Y4 }* H; |$ n运行结果:
. t m) n' N- H Global optimal solution found.1 S( @+ M; P! N& |6 p) ^" e* ?7 L
Objective value: 47600.009 \( p, h% A, c/ w# ~. w
Total solver iterations: 7+ k3 o/ f+ n7 _ p
- b9 @" e% F6 w6 U
- ]' E6 a' x# O2 x1 B* z
Variable Value Reduced Cost
" s2 H, n2 _; Z& A1 k0 t. V% cX11 0.000000 30.000002 E8 ?: v) ~4 I. t# m! c
X12 50.00000 0.000000( e! P3 h0 a+ _" e) M1 v3 D3 h) k1 I
X13 0.000000 50.00000
% d$ |0 Y6 O/ M' k# tX14 0.000000 20.000004 q( b1 v5 g% h4 J2 _& a' Q; _
X21 0.000000 10.00000# h4 \$ L% `4 @$ ~% m9 J8 |
X22 50.00000 0.0000002 K. K* G' a4 ]7 i1 P
X23 0.000000 20.00000
5 [1 y Y( Y b4 f, X; j2 S% U" uX24 10.00000 0.000000# {1 F; r7 m% P& I7 Q
X31 40.00000 0.000000
( F: _, \5 S2 n3 i/ L8 hX32 0.000000 10.00000
3 l. N+ q) T J3 {, b0 dX33 10.00000 0.000000# X; b: v# g4 z4 |6 Y: b( T8 e
X34 0.000000 240.0000" c, B5 @; z8 D. i
, x# r* V% O! K1 m9 x) M2 f& S
Row Slack or Surplus Dual Price
0 p3 {2 ?. G8 C# G. `2 ?% Q1 47600.00 1.0000004 g2 n( M0 _1 }3 d% Y+ n
2 0.000000 320.0000& A& B! |" x0 E7 N2 f, D
3 0.000000 320.0000
3 b4 A" r4 M7 i. b4 0.000000 260.00005 ` P" Z; E% D3 E4 c8 p7 Y7 o
5 10.00000 0.000000
4 u1 X' r& H* L: Z* l+ S1 S; o6 40.00000 0.000000% j R" C9 k+ S/ d
7 30.00000 0.000000+ {. J9 ]" N" R, g0 ?5 B
8 40.00000 0.0000004 t" c- `3 b9 `/ u2 `( l
9 0.000000 -40.00000
3 A# r: x" d2 v. L8 @10 20.00000 0.000000
$ y$ ]+ o9 J) v i( t7 J- o% b11 0.000000 -20.00000
: F2 s# t1 J! d0 o0 @, M: |12 40.00000 0.000000& R6 l7 ?3 R* E
7 w* \3 J, b( I: |【2】求解:7 o% E2 Q& O% S
模型:# D3 l% h1 ^* i/ R* T2 P8 ]
max 290x11+320x12+230x13+280x14+310x21+320x22+260x23+300x24+260x31+250x32+220x330 }5 F1 F. L- q$ ?& o
st1 M9 z3 c0 }" d8 W) P+ ]! y
x34=0;! k. K; m2 r7 W9 Z+ R' d
x11+x12+x13+x14<=100;
5 x% U) P$ E, X: d/ @x21+x22+x23+x24<=120;# p2 E3 C, Y3 b$ w" C
x31+x32+x33+x34<=100;
+ i6 U; S. F" W- t- ~7 bx11+x21+x31>=30;
0 m. {7 b' H2 ?. ^; \( T" Jx11+x21+x31<=80;
0 |0 \, O$ M8 fx12+x22+x32>=70;
: f( S! x9 b) I9 r( Z* lx12+x22+x32<=140;
7 k* }- M9 \2 zx13+x23+x33>=10;
; S- b+ e# w- n4 G% Px13+x23+x33<=30;
& ~' t0 T+ u4 b5 U# ^( O" kx14+x24+x34>=10;
( f. A; y3 |7 @; G) F* ax14+x24+x34<=50;
+ N% J1 g. t( t! p% oend
- B. E+ `# H- S6 y# ]LINGO程序:# o6 h' l' N) A" ?% t4 `* n
max=290*x11+320*x12+230*x13+280*x14+310*x21+320*x22+260*x23+300*x24+260*x31+250*x32+220*x33;
$ e1 N8 T9 k+ \; S) ]* h# F" Ox11+x12+x13+x14<=100;. ?$ c+ D1 ~6 v+ i; p3 { h( {
x21+x22+x23+x24<=120;
: ]) H- R1 N% u0 \x31+x32+x33+x34<=100;) M- n* p9 ?' ? V6 [+ G0 V
x11+x21+x31>=30;
6 e5 k. K) f( [* L- lx11+x21+x31<=80;
1 d u6 q( N; W; ?5 k+ `' nx12+x22+x32>=70; I3 D* P r1 v) o" i8 `
x12+x22+x32<=140;, g! G% U0 Y2 A9 z) O! J5 `
x13+x23+x33>=10;2 P0 Y+ E. B7 s% F: r) o; i2 \
x13+x23+x33<=30;
2 r; T5 |4 J# {3 Q$ E3 Fx14+x24+x34>=10;
' e: x+ ]: d" Mx14+x24+x34<=50;5 x5 a& q/ H/ B) n8 a% H
end0 ?8 n3 F; P' m. }: ?
运行结果: ' @; ?2 R! Q# p) d
Global optimal solution found.# a4 L/ p/ L$ w& d. h% Q8 i
Objective value: 88700.00
, X$ U9 V; {: s# }" ?+ C9 J' z N7 I Total solver iterations: 7
$ S2 X/ `* @* d9 I7 {+ }7 W: V( B$ J7 n1 a
1 R5 |7 f2 g6 i8 v4 J7 |6 p
Variable Value Reduced Cost. @3 T. Y4 ^5 k9 M
X11 0.000000 20.00000- U* U% t3 j0 t5 x K6 R
X12 100.0000 0.000000/ @' z8 o; m7 o
X13 0.000000 40.00000( o8 v+ w; Q Y, p* o
X14 0.000000 20.00000
( ?' E% n* j3 J% x6 R" JX21 30.00000 0.0000009 i, J1 A2 @. B) q
X22 40.00000 0.000000
" S2 n$ | N7 d) J' n M/ XX23 0.000000 10.00000
" D& s. K- H' p# \X24 50.00000 0.000000
8 {, @! C. l2 b6 N0 z- n4 vX31 50.00000 0.0000009 D8 @: ?2 g+ U/ ?3 M% d& Q
X32 0.000000 20.00000& ^/ Y9 b1 u4 y g( l& l7 `0 i
X33 30.00000 0.0000005 d' o3 ~; K; r% h/ l6 m y
X34 0.000000 250.0000
5 I' n% S# p7 [ x; n+ h; T7 w, v( Y8 j' L. \
Row Slack or Surplus Dual Price
: [% T8 X! `+ ~' Y# E1 88700.00 1.0000001 E J- ?+ {* w
2 0.000000 50.00000
5 V9 A, p0 m8 i6 ?3 0.000000 50.00000( _6 x1 [1 o- ]$ i8 t
4 20.00000 0.0000006 v1 `" ]& u8 T) o8 M3 ?/ }$ P
5 50.00000 0.000000# @7 _. ?8 Q( R- Q6 z7 \# x/ T) Q
6 0.000000 260.0000* s" ^: E/ |3 I+ {* S
7 70.00000 0.000000
5 `6 f# E% z$ A2 m1 W% Y% w/ A8 0.000000 270.0000
" r ^+ y9 a% {+ \( X5 `9 20.00000 0.000000
+ O+ Y# X% d0 T, P, e10 0.000000 220.0000
, |4 c) N6 S. X$ q& x11 40.00000 0.000000# |( k& E0 F6 c! V
12 0.000000 250.0000 |
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