function [] = circle_ger(a)
s=size(a);
n=s(1);
for k=1:n
%    r=sum(abs(a(k,:)));
%    r=r-abs(a(k,k));
r=0;
for j=1:k-1
    r=r+abs(a(k,j));
end
for j=k+1:n
    r=r+abs(a(k,j));
end
circle(a(k,k),r);
hold on;
end
circle(0,0);
hold on
axis equal
hold off

end