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Cod sursa(job #342181)
var i,j,a,z,ii:longint;
t,te:text;
begin
assign(t,'euclid2.in'); reset(t);
assign(te,'euclid2.out'); rewrite(te);
readln(t,z);
for ii:=1 to z do
begin
readln(t,i,j);
if j>i then
begin
a:=j;
j:=i;
i:=a;
end;
repeat
begin
a:=j;
j:=i mod j;
i:=a;
end;
until j=0;
writeln(te,i);
end;
close(te);
end.