input: from typing import List
  
  
  def find_max_element(numbers: List[int]) -> int:
      """Given an array of numbers, find the maximum element.
      >>> find_max_element([1, 43, 78, 3, 92, 42])
      92
      >>> find_max_element([-5, -3, -7, -2, -1])
      -1
      """
      return max(numbers)
output:     if not numbers:
          return None