>>> from metres import mes_gran

>>> mes_gran(60, 10, 0, 65, 0, 0)
(0, 65)
>>> mes_gran(70, 10, 10, 80, 0, 0)
(2, 80)
>>> mes_gran(70, 20, 30, 80, 0, 12)
(1, 90)
>>> mes_gran(90, 10, 9, 65, 20, 20)
(1, 98)
>>> mes_gran(70, 10, 40, 80, 0, 40)
(2, 93)
>>> mes_gran(90, 0, 30, 80, 0, 42)
(1, 100)