1
subroutine diam(fe,che,head,lngt,n,iropt,ii,idmax,p,q,d)
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integer fe,che,head,lngt,p,q,d,r
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dimension fe(n),d(n),p(n),q(*)
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dimension head(*),lngt(*),che(*)
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call l2que(r,fe,che,head,lngt,n,d,p,q)
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id1max=max(id1max,d(imeu))
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if(id1max.le.idmax) goto 99
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call l2que(r,fe,che,head,lngt,n,d,p,q)
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if(d(imeu).eq.idmax) ii=imeu