def sum(number_one,number_two):
    number_one_int=convert_integer(number_one)
    number_two_int=convert_integer(number_two)
    
    result = number_one_int+number_two_int
    return result

def convert_integer(number_string):
    
    converted_integer = int(number_string)
    return converted_integer

answer = sum("1", "2")

print answer