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Cod sursa(job #583191)
program euclid2;
var n,i,m1,m2:integer; f1,f2:text;
function euclid(n,m:integer):integer;
var x:integer;
begin
if n=0 then euclid:=m else
if n<m then
euclid:=euclid(n, m mod n) else euclid:=euclid(m,n);
end;
begin
assign(f1,'euclid2.in');
reset(f1);
readln(f1,n);
assign(f2,'euclid2.out');
rewrite(f2);
for i:=1 to n do
begin
read(f1,m1); read(f1,m2);
writeln(f2,euclid(m1,m2));
end;
close(f1);
close(f2);
end.