




def      __lowerCAmelCase			(					)     ->	Union[str, Any]:
  lowerCAmelCase__				:  int		       =     [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]

  lowerCAmelCase__				:  str		       =     6
  lowerCAmelCase__				:  List[Any]		       =     1
  lowerCAmelCase__				:  Optional[Any]		       =     1901

  lowerCAmelCase__				:  int		       =     0

  while year < 2001:
    day += 7

    if (year % 4 == 0 and year % 100 != 0) or (year % 400 == 0):
      if day > days_per_month[month - 1] and month != 2:
        month += 1
        lowerCAmelCase__				:  Optional[int]		       =     day - days_per_month[month - 2]
      elif day > 29 and month == 2:
        month += 1
        lowerCAmelCase__				:  Optional[int]		       =     day - 29
    else:
      if day > days_per_month[month - 1]:
        month += 1
        lowerCAmelCase__				:  int		       =     day - days_per_month[month - 2]

    if month > 12:
      year += 1
      lowerCAmelCase__				:  Union[str, Any]		       =     1

    if year < 2001 and day == 1:
      sundays += 1
  return sundays


if __name__ == "__main__":
   print(solution())







def      __lowerCAmelCase			(					UpperCamelCase      )     ->	bool:
  if not isinstance(UpperCamelCase	,      UpperCamelCase      ):
    raise ValueError('''Input series is not valid, valid series - [2, 4, 6]'''      )
  if len(UpperCamelCase      ) == 0:
    raise ValueError('''Input list must be a non empty list'''      )
  if len(UpperCamelCase      ) == 1:
    return True
  lowerCAmelCase__				:  Tuple		       =     series[1] - series[0]
  for index in range(len(UpperCamelCase      ) - 1      ):
    if series[index + 1] - series[index] != common_diff:
      return False
  return True



def      __lowerCAmelCase			(					UpperCamelCase      )     ->	float:
  if not isinstance(UpperCamelCase	,      UpperCamelCase      ):
    raise ValueError('''Input series is not valid, valid series - [2, 4, 6]'''      )
  if len(UpperCamelCase      ) == 0:
    raise ValueError('''Input list must be a non empty list'''      )
  lowerCAmelCase__				:  int		       =     0
  for val in series:
    answer += val
  return answer / len(UpperCamelCase      )


if __name__ == "__main__":
     import doctest

     doctest.testmod()

