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Falexom

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May 2nd, 2023
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  1. def chet_nechet(row): # я чуть не ебанулся пока делал эту задачу
  2. row.insert(0, 0)
  3. left = 1
  4. right = len(row) - 1
  5. tag = 0
  6. output = 0
  7. while left < right:
  8. if (((left % 2 != 0) and (row[left] % 2 != 0)) and ((right % 2 != 0) and (row[right] % 2 != 0))) or (
  9. ((left % 2 == 0) and (row[left] % 2 == 0)) and ((right % 2 == 0) and (row[right] % 2 == 0))):
  10. left += 1
  11. right -= 1
  12.  
  13. if (tag == 1) and (((left % 2 != 0 and row[left] % 2 == 0) or (left % 2 == 0 and row[left] % 2 != 0)) or
  14. ((right % 2 != 0 and row[right] % 2 == 0) or (right % 2 == 0 and row[right] % 2 != 0))):
  15. tag = 2
  16. break
  17.  
  18. if ((right % 2 == 0) and (row[right] % 2 == 0)) or ((right % 2 != 0) and (row[right] % 2 != 0)):
  19. right -= 1
  20.  
  21. if ((left % 2 == 0) and (row[left] % 2 == 0)) or ((left % 2 != 0) and (row[left] % 2 != 0)):
  22. left += 1
  23.  
  24. if ((left % 2 != 0) and (row[left] % 2 == 0) or (left % 2 == 0) and (row[left] % 2 != 0)) and \
  25. ((right % 2 != 0) and (row[right] % 2 == 0) or (right % 2 == 0) and (row[right] % 2 != 0)) and (left != right):
  26. if tag == 0:
  27. buf = row[right]
  28. row[right] = row[left]
  29. row[left] = buf
  30. tag = 1
  31.  
  32. if tag == 0 or tag == 2:
  33. output = '-1 -1'
  34. return output
  35. if tag == 1:
  36. output = row
  37. output = output[1:]
  38. output = [str(i) for i in output]
  39. output_str = ' '.join(output)
  40. return output_str
  41.  
  42.  
  43. def interface():
  44. sher = int(input())
  45. people = input()
  46. people = people.split()
  47. people = [int(i) for i in people]
  48. print(chet_nechet(people))
  49.  
  50.  
  51. if __name__ == '__main__':
  52. interface()
  53.  
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