lingo算出来的解很有问题，都已经限制了整数解，却还有小数，而且其他值也很奇怪，求大神相助

model:
sets:
city/1..5/:police,s;
project/1..4/:bmax,bmin;
link(project,city):x,y,z;
endsets
data:
x= 103.0000 221.0000 383.0000 432.0000 274.0000
21.0000 49.0000 73.0000 76.0000 53.0000
66.4000 187.2000 67.8000 119.4000 109.2000
73.0000 154.0000 52.0000 103.0000 108.0000;
enddata
min=F;
@sum(city:police)=60;
@for(link(i,j):police(j)/x(i,j)=y(i,j));
@for(project(i):@max(city(j):y(i,j))=bmax(i));
@for(project(i):@min(city(k):y(i,k))=bmin(i));
@for(link(i,m):(y(i,m)-bmin(i))/(bmax(i)-bmin(i))=z(i,m));
@for(city(n):@sum(project(i):0.1/0.35*z(i,n))-0.05/0.35*z(1,n)=s(n));
F=@sum(city(n):(s(n)-@sum(city(n):s(n))/5)^2);
@for(city(u):@gin(police(u)));

软件都是有精度的 非常接近0那就是0了 不是说你限制是整数报告里面就一定是整数

搜一下：lingo算出来的解很有问题，都已经限制了整数解，却还有小数，而且其他值也很奇怪，求大神相助