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  1. from sys import stdin
  2.  
  3. l = [int(x) for x in stdin]
  4. duplicates = (x for x in l if l.count(x) > 1)
  5.  
  6. print(l)
  7. print(next(duplicates))
Success #stdin #stdout 0.02s 9380KB
comments (?)
stdin
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1
3
5
9
5
2
stdout
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[1, 3, 5, 9, 5, 2]
5
https://ideone.com/nFT1Py
language:
Python 3 (python  3.9.5)
created:
4 years ago
visibility:
public

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