问题描述：
lingo程序错误1017
model:
sets:
question(/1..i/):x,y;
endsets
init:
x(1)=0;
y(1)=0;
endinit
[obj] max=@sum(link(i,j):c(i))
@for(question:(min(@sqrt((x(i)-x(i1))^2+(y(i)-y(j))^2))>=z););
@for(question:(max(@sqrt((x(i)-x(i1))^2+(y(i)-y(j))^2))
model:
sets:
question(/1..i/):x,y;
endsets
init:
x(1)=0;
y(1)=0;
endinit
[obj] max=@sum(link(i,j):c(i))
@for(question:(min(@sqrt((x(i)-x(i1))^2+(y(i)-y(j))^2))>=z););
@for(question:(max(@sqrt((x(i)-x(i1))^2+(y(i)-y(j))^2))
问题解答：
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