>>> from control import resta_temps

>>> resta_temps(3, 45, 2, 35)
(1, 10)
>>> resta_temps(2, 20, 2, 15)
(0, 5)
>>> resta_temps(3, 5, 1, 55)
(1, 10)
>>> resta_temps(5, 15, 2, 35)
(2, 40)