371. Sum of Two Integers

Calculate the sum of two integers a and b, but you are not allowed to use the operator + and -.

Example 1:

Input: a = 1, b = 2
Output: 3

Example 2:

Input: a = -2, b = 3
Output: 1

class Solution:
    def getSum(self, a, b):
        """
        :type a: int
        :type b: int
        :rtype: int
        """
        return a+b