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  1. i=bin(input())[2:]
  2. i=o='0'+i if len(i)%2 else i
  3. c=0
  4. j=len(i)/2
  5. while i!=o or c==0:
  6.  a=''
  7.  for x,y in zip(i[:j][::-1],i[j:]):a+=x+y
  8.  i,c=a,c+1
  9. print c
Success #stdin #stdout 0.04s 9016KB
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stdin
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1915195950546866338219593388801304344938837974777392666909760090332935537657862595345445466245217915
stdout
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329
https://ideone.com/JP4JhA
language:
Python (cpython 2.7.16)
created:
8 years ago
visibility:
public

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