Write a Python program to edit the following code in such a way that the output is increased is increased by one.
def add_two_numbers(a, b):
    c = a + b
    d = a - b
    total = c + d
    print(total)
def add_two_numbers(a, b):
    c = a + b
    d = a - b
    total = c + d + 1
    print(total)