lingo程序求解释~n=@size(cities); min=@sum(link(i,j)|i#ne#j :distance(i,j)*x(i,j)); @sum(cities(i)|i#gt#1 :x(1,i))>=1; @for(cities(i)|i#gt#1:@sum(cities(j)|j#ne#i:x(j,i))=1; @for(cities(j)|j#gt#1#and#j#ne#i:level(j)>=level(i)+x(i,j)-(n-2)*(1-x(i,
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/22 20:44:59
![lingo程序求解释~n=@size(cities); min=@sum(link(i,j)|i#ne#j :distance(i,j)*x(i,j)); @sum(cities(i)|i#gt#1 :x(1,i))>=1; @for(cities(i)|i#gt#1:@sum(cities(j)|j#ne#i:x(j,i))=1; @for(cities(j)|j#gt#1#and#j#ne#i:level(j)>=level(i)+x(i,j)-(n-2)*(1-x(i,](/uploads/image/z/8882695-55-5.jpg?t=lingo%E7%A8%8B%E5%BA%8F%E6%B1%82%E8%A7%A3%E9%87%8A%7En%3D%40size%28cities%29%3B+min%3D%40sum%28link%28i%2Cj%29%7Ci%23ne%23j+%3Adistance%28i%2Cj%29%2Ax%28i%2Cj%29%29%3B+%40sum%28cities%28i%29%7Ci%23gt%231+%3Ax%281%2Ci%29%29%3E%3D1%3B+%40for%28cities%28i%29%7Ci%23gt%231%3A%40sum%28cities%28j%29%7Cj%23ne%23i%3Ax%28j%2Ci%29%29%3D1%3B+%40for%28cities%28j%29%7Cj%23gt%231%23and%23j%23ne%23i%3Alevel%28j%29%3E%3Dlevel%28i%29%2Bx%28i%2Cj%29-%28n-2%29%2A%281-x%28i%2C)
lingo程序求解释~n=@size(cities); min=@sum(link(i,j)|i#ne#j :distance(i,j)*x(i,j)); @sum(cities(i)|i#gt#1 :x(1,i))>=1; @for(cities(i)|i#gt#1:@sum(cities(j)|j#ne#i:x(j,i))=1; @for(cities(j)|j#gt#1#and#j#ne#i:level(j)>=level(i)+x(i,j)-(n-2)*(1-x(i,
lingo程序求解释~
n=@size(cities);
min=@sum(link(i,j)|i#ne#j :distance(i,j)*x(i,j));
@sum(cities(i)|i#gt#1 :x(1,i))>=1;
@for(cities(i)|i#gt#1:@sum(cities(j)|j#ne#i:x(j,i))=1;
@for(cities(j)|j#gt#1#and#j#ne#i:level(j)>=level(i)+x(i,j)-(n-2)*(1-x(i,j))+(n-3)*x(j,i););
@bnd(1,level(i),999999); level(i)=1;
@for(cities(i)|i#gt#1:@sum(cities(j)|j#ne#i:x(j,i))=1;
@for(cities(j)|j#gt#1#and#j#ne#i:level(j)>=level(i)+x(i,j)-(n-2)*(1-x(i,j))+(n-3)*x(j,i););
@bnd(1,level(i),999999); level(i)
lingo程序求解释~n=@size(cities); min=@sum(link(i,j)|i#ne#j :distance(i,j)*x(i,j)); @sum(cities(i)|i#gt#1 :x(1,i))>=1; @for(cities(i)|i#gt#1:@sum(cities(j)|j#ne#i:x(j,i))=1; @for(cities(j)|j#gt#1#and#j#ne#i:level(j)>=level(i)+x(i,j)-(n-2)*(1-x(i,
你这个问题是什么 我只能这样给你改了
model:
sets:
cities/s,a1,a2,a3,b1,b2,c1,c2,t/:l;
roads(cities,cities)/
s,a1 s,a2 s,a3
a1,b1 a1,b2 a2,b1 a2,b2 a3,b1 a3,b2
b1,c1 b1,c2 b2,c1 b2,b2
c1,t c2,t/:d;
endsets
data:
d= 6 3 3
6 5 8 6 7 4
6 7 8 9
5 6;
enddata
calc:
l(1)=0;
@for(cities(i)|i#gt#1:
l(i)=@min(cities(j)|@in(roads,i,j):l(j)+d(i,j)););
endcalc
end