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群组: 数学趣味、游戏、IQ等 群组: 数学建模 群组: 趣味数学 群组: Mathematica研究小组 群组: 我们的小窝 |
【1】求解:
+ ~& c' s3 X! g4 @' Q) c/ v; k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:
; j$ z, t& h/ Bmax 290x11+320x12+230x13+280x14+310x21+320x22+260x23+300x24+260x31+250x32+220x33
, |" R# @8 x' e4 V9 nst
% t; ^) X" e0 ^. |3 [/ nx34=0;% J' A' T- v2 c8 m/ ] K; [
x11+x12+x13+x14<=50;
" l' B% H' k& p& sx21+x22+x23+x24<=60;; o# J3 _' [ V# g4 Z
x31+x32+x33+x34<=50;
2 a9 K8 O0 F$ Bx11+x21+x31>=30;
" U/ a- c: G Q& W, F0 zx11+x21+x31<=80;
- A) ~8 S+ b& p3 T4 T# Xx12+x22+x32>=70;
& n& r% C0 v" _7 ]x12+x22+x32<=140;2 p3 p( m I E4 V
x13+x23+x33>=10;+ h9 a% I( @+ c( U8 q( N2 E
x13+x23+x33<=30;. x7 G- x% s# Z
x14+x24+x34>=10;
1 w1 J+ ~7 I3 a( kx14+x24+x34<=50;" \' S: ^. j7 D0 [8 b0 P
end
" ^0 v* r+ c( cLINGO程序:
! Z1 ^( r; e9 Y( H fmax=290*x11+320*x12+230*x13+280*x14+310*x21+320*x22+260*x23+300*x24+260*x31+250*x32+220*x33;: Y6 g% ?' ]: u2 j T& X$ c
x11+x12+x13+x14<=50;2 z7 E1 E9 H2 J; k/ ? h
x21+x22+x23+x24<=60;
: f g% a" w4 v# M* G) L6 ax31+x32+x33+x34<=50;
7 g" q' F7 c$ W4 U: _( ]x11+x21+x31>=30;8 Y Q- R2 L% J. K) a; i7 v
x11+x21+x31<=80;3 S; A+ R) G/ H+ F1 _5 a
x12+x22+x32>=70;- [4 P+ s( l! V4 }( e' b( T
x12+x22+x32<=140;
" }' ~2 k: n) |) ex13+x23+x33>=10;
; c# g2 n J' Z4 Kx13+x23+x33<=30;: b6 L' Y/ ^! @6 y. m# n& |: Z
x14+x24+x34>=10;( ?) ] K/ N, x" A
x14+x24+x34<=50;6 u' {" N2 W" b' r0 O
end, K" F& v2 m% H, H) ^% d1 |' q
运行结果:
8 @: k+ q* v" {" I) w5 V Global optimal solution found.
9 P, ?) M I- a5 {7 Y0 ? Objective value: 47600.00+ j5 ]9 |: P! p$ u! r
Total solver iterations: 7
+ S/ r7 } Q% h6 o9 [% }+ l L
" H9 X) T9 B0 V' \3 w: l* N. \4 I* K/ x: k& e9 o/ x- E9 V
Variable Value Reduced Cost
; O4 @7 } I& Z/ M: I. zX11 0.000000 30.00000
$ [- G1 `; f" N gX12 50.00000 0.000000' `+ T0 i9 J. U u
X13 0.000000 50.00000/ P, g# d& O! W1 N1 H. X. I: v
X14 0.000000 20.00000$ V; y- q. r6 L* I5 L6 e. B
X21 0.000000 10.00000, w, J. h1 o4 o1 H: k$ E
X22 50.00000 0.000000
& I- D/ e7 {) S$ k0 Y$ k' wX23 0.000000 20.00000
8 E* O" M. H0 |, dX24 10.00000 0.000000
# ]2 {8 p- i: l3 c; q( W# T% pX31 40.00000 0.000000
' g1 G7 \ Z! k5 YX32 0.000000 10.00000# C; }$ d8 d5 @+ E+ B
X33 10.00000 0.000000* Z T$ V( _, L, w v$ H0 h1 Z0 G6 f
X34 0.000000 240.0000& k- F, v. q+ I6 k
' q, e$ O& s. F. f2 v6 c$ J! f
Row Slack or Surplus Dual Price1 D: |" m& \8 I+ ?* ?0 ]
1 47600.00 1.000000
- ]/ S) ]: W* i J3 x4 |2 0.000000 320.0000
% r7 ^' O0 i' P- X* @3 0.000000 320.0000
0 X, g, s$ |+ W0 y4 0.000000 260.0000 e/ L- l7 \/ m
5 10.00000 0.000000
; ^& o. h. g) R8 C( }! a6 v% ]. ?6 40.00000 0.000000; h: \2 `: q: V" _7 O+ G2 P1 _
7 30.00000 0.000000
. Z: _) f' c+ D: P8 40.00000 0.000000
* U6 v7 Q! ^) \9 Z6 `6 Y! X( [9 0.000000 -40.00000
5 i( v0 Z9 l* }' {) j10 20.00000 0.000000$ r+ O0 g! W$ f: @8 f) H- T& j0 m$ P
11 0.000000 -20.00000+ _' i: j; ?- H3 w9 g+ v
12 40.00000 0.000000
9 e6 ]' Q) ~; F8 n$ U* L% G6 e, U) r/ ?- n, u( Z# ~2 N
【2】求解:
1 w% x/ v' J' U, J模型:6 [, l$ f8 g. C) p' @2 b
max 290x11+320x12+230x13+280x14+310x21+320x22+260x23+300x24+260x31+250x32+220x33+ G# ^7 I/ s M& m! X
st i Z( E2 ^" ~4 t. n
x34=0;
2 N; z4 f* h6 @! G4 o: u6 f# Px11+x12+x13+x14<=100;
; e" Z& _; T v3 e* j: P/ C& Mx21+x22+x23+x24<=120;2 s: g$ w" k, v" ?" J- c
x31+x32+x33+x34<=100;" H8 `5 _$ W, [0 d+ b+ J
x11+x21+x31>=30;
9 S5 k. L! [2 j4 }" Ex11+x21+x31<=80;$ r& `, c# Z0 ]1 }2 z
x12+x22+x32>=70;: f5 l7 x5 P/ _+ k9 q4 v* a
x12+x22+x32<=140;' K. p& u8 k5 ?" }: J5 h0 i
x13+x23+x33>=10;
0 b! g0 R f' `' l" L3 k, o* Nx13+x23+x33<=30;
7 F9 }. @# G( M$ @6 U1 p8 k. Bx14+x24+x34>=10;
; Z* _4 [ |- o) `; \ D- ix14+x24+x34<=50;- ]5 q. v# K( u& ~) X
end
7 F: _+ k# T. w& T- v. SLINGO程序:1 O+ u/ }# I; S" q0 ^" V: F6 w
max=290*x11+320*x12+230*x13+280*x14+310*x21+320*x22+260*x23+300*x24+260*x31+250*x32+220*x33;
- o: \2 m, ^# ux11+x12+x13+x14<=100;
8 i# C5 W" m" r+ sx21+x22+x23+x24<=120;
: b& w& B0 c' V1 [$ _- Dx31+x32+x33+x34<=100;8 q& Y9 G) I1 n
x11+x21+x31>=30;# y1 N( v: B7 I+ a6 S( o+ B4 ~( ~
x11+x21+x31<=80;" { ~. t) j) [; L* X) ^. |! D
x12+x22+x32>=70;
' `0 G7 q. m( z! zx12+x22+x32<=140;" }: W1 n2 b" C2 _$ ^
x13+x23+x33>=10;
' g) E/ t- y7 B6 p6 U0 ]. g- ix13+x23+x33<=30;$ z& m, R, c$ Y+ s- o
x14+x24+x34>=10;
# |5 }: r8 x7 G& J0 y0 Q# bx14+x24+x34<=50;/ L O/ W, A9 `2 J" D3 D
end
e' }/ u) B5 S5 z, O5 S; N7 H" q运行结果:
z4 Q* X# w+ j Global optimal solution found.3 ?" ]. [! y" X/ X- L
Objective value: 88700.00" S9 f; J! | c5 [# i) f$ v
Total solver iterations: 7% `, R9 u8 A$ v' C
- p, t U+ }0 l4 l3 m) c! u1 T8 [
+ F8 D2 N5 `6 ?0 Z2 k0 r- |Variable Value Reduced Cost
5 I& a4 E3 L9 c# h. tX11 0.000000 20.000003 Q- m" K8 b- r! y
X12 100.0000 0.000000: j) h" O4 L2 Q, p/ P) v
X13 0.000000 40.00000
( S' e0 r8 H1 W' ?X14 0.000000 20.00000
: p: O1 R, f+ I$ b+ L6 |# f: YX21 30.00000 0.0000004 h4 N- R4 e8 b \; J
X22 40.00000 0.0000007 j5 O4 [0 U& d, w# [3 H
X23 0.000000 10.00000. L$ C, w5 u! K5 f9 @# g
X24 50.00000 0.000000
. M0 d8 ]- L/ N {# E wX31 50.00000 0.000000
5 }/ W* {0 s7 x1 d3 DX32 0.000000 20.00000) p6 D% `- w6 J" B+ X
X33 30.00000 0.000000" N% V) v1 p8 f- ?% o1 I
X34 0.000000 250.0000
& B/ @0 S( @* F. [! n u! |3 p# ~: P' m. A2 i2 s4 h' r8 A9 c: K1 t
Row Slack or Surplus Dual Price
! s1 J2 ~) E, `4 }* |1 88700.00 1.000000; ^- F7 I# t7 C) Q+ T& g& K1 \5 ]
2 0.000000 50.00000: y8 T1 Y [3 R9 T y5 N! ]
3 0.000000 50.00000
$ a. s& n$ ?4 ~3 P& b6 N$ i9 ^( o4 20.00000 0.000000" t8 m7 d0 D& u6 `. ?. D
5 50.00000 0.000000 f y. a- e7 n% z' B6 N
6 0.000000 260.0000
& k# d3 e2 j& y+ Z) g" A: L" c8 \; a/ E7 70.00000 0.000000- P" A8 R# R) u( v* x
8 0.000000 270.0000
) d. k$ t( Z4 @8 g3 |0 |6 a9 w9 20.00000 0.000000
9 e$ |' k7 Z4 m! l* l1 G7 R6 R10 0.000000 220.0000
) g2 A" e: t7 x# B4 @11 40.00000 0.000000
* m! N7 D6 L9 X9 b# A12 0.000000 250.0000 |
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