program Project1;


VAR
  x, y : longint;


begin

  readln(x, y);
  if ((x mod 2 = 0) or (y mod 2 = 0)) and (x > 0) and (y > 0) then
    writeln(y, ' ', x)
  else
    writeln(x, ' ', y);



end.

Oh... I have found my foolish error...