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  1. C= [[1,2,3],[4,5,6],[7,8,9]]
  2.  
  3. total = 0
  4. for row in C:
  5. 	for x in row:
  6. 		total +=x
  7. print(total)
Success #stdin #stdout 0.04s 9544KB
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https://ideone.com/wySXPa
language:
Python 3 (python  3.9.5)
created:
8 days ago
visibility:
public

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