L=[
['Apple','Google','Microsoft'],
['Java','Python','Ruby','PHP'],
['Adam','Bart','Lisa']
]
print(L[0][0])
print(L[1][1])
print(L[-1][-1])
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没有名字的小号198307
L=[
['Apple','Google','Microsoft'],
['Java','Python','Ruby','PHP'],
['Adam','Bart','Lisa']
]
print(L[0][0])
print(L[1][1])
print(L[-1][-1])