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  1. input_count = input('自然数')
  2.  
  3. i = int(input_count)
  4. while i!=1:
  5. if i%2==1:
  6. i = 3*i-1
  7. else:
  8. i = i//2
  9. print(i)
Success #stdin #stdout 0.02s 9424KB
stdin
6
stdout
自然数3
8
4
2
1