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