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  1. from collections import Counter
  2. def next_step(s):
  3.     return ''.join(str(v) + k for k, v in sorted(Counter(s).items(), reverse=True))
  4.  
  5. s = '1'
  6. print s
  7. for _ in xrange(20):
  8.     s = next_step(s)
  9.     print s
  10.  
Success #stdin #stdout 0.01s 7864KB
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stdin
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Standard input is empty
stdout
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1
11
21
1211
1231
131221
132231
232221
134211
14131231
14231241
24132231
14233221
14233221
14233221
14233221
14233221
14233221
14233221
14233221
14233221
https://ideone.com/qJW22A
language:
Python (cpython 2.7.16)
created:
11 years ago
visibility:
public

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