一個lingo lingo中約束條件之間是 ‘或’ 的關(guān)系,應(yīng)該如何表示?Lingo中是否允許?
代碼如下,就是最后一個循環(huán)出錯,去掉后可以執(zhí)行,最后一句錯在哪?
P是火車票價格;
model:
sets:
citys/1..10/:;
city/1..11/:u,tt1,tt2,et;
link(city,city):T1,T2,p,x;
links(city,city,citys):;
endsets
data:
p=@file('price.txt');
T1=@file('T1.txt');
T2=@file('T2.txt');
tt1=@file('tt1.txt');
tt2=@file('tt2.txt');
enddata
[OBJ] min=@SUM(link(i,j):p(i,j)*x(i,j));
@for(city(j):@sum(city(i)|j#ne#i:x(i,j))=1);!j前有一個城市相連;
@for(city(i):@sum(city(j)|j#ne#i:x(i,j))=1);!i前有一個城市相連;
@for(link(i,j)|(i#ne#j)#AND#(i#gt#1):u(i)-u(j)+11*x(i,j)