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  1. Prepare
  2. Python
  3. Itertools
  4. itertools.combinations_with_replacement()
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itertools.combinations_with_replacement()

  • babafun
     + 0 comments

    super short:

    from itertools import combinations_with_replacement

s, n = input().split()
print(*[''.join(i) for i in sorted(combinations_with_replacement(sorted(s), int(n)))], sep='\n')