Question

lingo中missing right parenthesis！急！

sets:
p/1..92/;
q/1..92/:t;
r/1..20/;
link(p,q):c,x;
endsets
min=a;
(@sum(link(i,j):c(i,j)*x(i,j)*t(j)))<=a;
@for(r(i):c(i,i)=1;);
@for(q(j):
@sum(p(i):c(i,j))=1;);
@for(link(i,j):@bin(c(i,j)););
@for(link(i,j):c(i,j)*x(i,j)<3;);
@sum(link(i,j):c(i,i))=22;
@for(p(i):
b=@sum(q(j):c(i,j));
d=@sum(q(j):c(i,j)););
@for(p(i):
(@if(c(i,i)=1,b=0,d=1)));
我这么一段语句，总是说我少了右括号，但是我觉得没少啊～求大神！

Answer 1

sets:
p/1..92/;
q/1..92/:t;
r/1..20/;
link(p,q):c,x;
endsets
min=a;
(@sum(link(i,j):c(i,j)*x(i,j)*t(j)))<=a;
@for(r(i):c(i,i)=1;);
@for(q(j):
@sum(p(i):c(i,j))=1;);
@for(link(i,j):@bin(c(i,j)););
@for(link(i,j):c(i,j)*x(i,j)<3;);
@sum(link(i,j):c(i,i))=22;
@for(p(i):
b=@sum(q(j):c(i,j));
d=@sum(q(j):c(i,j)););
@for(p(i):
(@if(c(i,i)=1,b=0,d=1)));

最后这句用法错误：@if(c(i,i)=1,b=0,d=1))
没这么用过，估计问题就出在这