我的答案 print(L[0][0])或print(L[-3][-3]) print(L[1][1])或print(L[-2][-3]) print(L[2][2])或print(L[-1][-1])
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我的答案 print(L[0][0])或print(L[-3][-3]) print(L[1][1])或print(L[-2][-3]) print(L[2][2])或print(L[-1][-1])