>>> from arrodoniment import corregeix_nota

>>> l = [['a',4,5,7,4.79],['b',4,5,7,4.79]]

>>> corregeix_nota(l, 6)
-1
>>> l
[['a', 4, 5, 7, 4.79], ['b', 4, 5, 7, 4.79]]

>>> corregeix_nota(l, 2)
0
>>> l
[['a', 4, 5, 7, 4.79], ['b', 4, 5, 7, 4.79]]

>>> corregeix_nota(l, 4)
2
>>> l
[['a', 4, 5, 7, 5.0], ['b', 4, 5, 7, 5.0]]


>>> lq1 = [["Anna", 4.8, 6.0, 7.5], ["Marc", 4.9, 5.0, 6.0], ["Jordi", 4.6, 4.8, 5.2], ["Laura", 4.6, 4.9, 5.5]]
>>> corregeix_nota(lq1, 1)
2
>>> lq1
[['Anna', 5.0, 6.0, 7.5], ['Marc', 5.0, 5.0, 6.0], ['Jordi', 4.6, 4.8, 5.2], ['Laura', 4.6, 4.9, 5.5]]

>>> lq2 = [['Anna', 4.3, 6.0, 7.5], ['Marc', 4.2, 5.0, 6.0], ['Jordi', 4.6, 6.2, 5.2], ['Laura', 4.0, 5.1, 5.5]]
>>> corregeix_nota(lq2, 2)
0
>>> lq2
[['Anna', 4.3, 6.0, 7.5], ['Marc', 4.2, 5.0, 6.0], ['Jordi', 4.6, 6.2, 5.2], ['Laura', 4.0, 5.1, 5.5]]

>>> lq3 = [['Anna', 4.8, 6.0, 7.5], ['Marc', 4.9, 4.8, 6.0], ['Jordi', 4.6, 4.7, 5.2], ['Laura', 4.7, 4.9, 5.5]]
>>> corregeix_nota(lq3, 2)
2
>>> lq3
[['Anna', 4.8, 6.0, 7.5], ['Marc', 4.9, 5.0, 6.0], ['Jordi', 4.6, 4.7, 5.2], ['Laura', 4.7, 5.0, 5.5]]

>>> lq4 = [['Anna', 4.7, 6.0, 7.5], ['Marc', 4.8, 5.0, 6.0], ['Jordi', 4.6, 4.9, 5.2], ['Laura', 4.9, 4.8, 5.5]]
>>> corregeix_nota(lq4, 0)
-1
>>> lq4
[['Anna', 4.7, 6.0, 7.5], ['Marc', 4.8, 5.0, 6.0], ['Jordi', 4.6, 4.9, 5.2], ['Laura', 4.9, 4.8, 5.5]]

>>> lq5 = [['Anna', 4.8, 6.0, 7.5], ['Marc', 4.9, 5.0, 6.0], ['Jordi', 4.6, 4.8, 5.2], ['Laura', 4.6, 4.9, 5.5]]

>>> corregeix_nota(lq5, 5)
-1

>>> corregeix_nota([], 1)
-1