var f,g:text; n,a,b,c,i:longint;
function cmmdc(x,y:integer):integer;
begin
while x<>y do
if x>y then x:=x-y
        else y:=y-x;
cmmdc:=x;
end;
begin
assign(f,'pairs.in');reset(f);
assign(g,'pairs.out');rewrite(g);
while not eof(f) do begin
readln(f,n);c:=0;
for i:=1 to n do begin
 readln(f,a);
 while not eof(f) do begin
  readln(f,b);
  if a<>b and cmmdc(a,b)=1 then c:=c+1;
  end;
 end;
end;
write(g,c);
close(f);close(g);
end.