input: 
  from typing import List
  
  
  def calculate_sum_of_two_integers(A: List[int]) -> int:
      """ Calculate the sum of two integers provided in a list format.
      >>> calculate_sum_of_two_integers([1, 2])
      3
      >>> calculate_sum_of_two_integers([-1, 5])
      4
      """
  
output:     return A[0] + A[1]