Program zad11;
  var n,i,j,max,min:integer;
  a,b:array[1..20] of integer;
Begin
  read(n);
  for i:=1 to n do
  begin
    read(a[i]);
    read(b[i]);
  end;
  max:=a[1];
  for i:=2 to n do
  begin
    if a[i]>max then max:=a[i];
  end;
  min:=b[1];
  for i:=2 to n do
  begin
    if b[i]<min then min:=b[i];
   end;
    if (max<min)then writeln(max,' ',min)else writeln('nema');
End.
  