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  1. f=lambda x,b=2:~-b*x in[i%b*~-b**(i/b)for i in range(b*x)]and b or f(x,-~b)%~-x
  2.  
  3. for x in 11, 23, 55, 90, 91:
  4. 	print x, '-->', f(x)
Success #stdin #stdout 0.06s 8968KB
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stdin
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Standard input is empty
stdout
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11 --> 0
23 --> 0
55 --> 10
90 --> 14
91 --> 9
https://ideone.com/1GgtGC
language:
Python (cpython 2.7.16)
created:
8 years ago
visibility:
public

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