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  1. sucessor = lambda x: x+1
  2. antecessor = lambda x: x-1
  3.  
  4. def sum(x, y):
  5.     if not y:
  6.         return x
  7.     return sum(sucessor(x), antecessor(y))
  8.  
  9. print(sum(3, 5))  # 8
Success #stdin #stdout 0.04s 9340KB
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8
https://ideone.com/lHno00
language:
Python 3 (python  3.9.5)
created:
6 years ago
visibility:
secret

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