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  1. n, m = map(int, input().split())
  2. a = [[0] * m] * n
  3. print(a)
  4.  
  5. a[0][0] = 1
  6. print(a)
Success #stdin #stdout 0.02s 9296KB
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[[0, 0, 0, 0, 0], [0, 0, 0, 0, 0], [0, 0, 0, 0, 0]]
[[1, 0, 0, 0, 0], [1, 0, 0, 0, 0], [1, 0, 0, 0, 0]]
https://ideone.com/VdKotg
language:
Python 3 (python  3.9.5)
created:
4 years ago
visibility:
public

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