Given a mixed array of number and string representations of integers, add up the string integers and subtract this from the total of the non-string integers. 
Return as a number.
def div_con(x):
    # your code here
    return sum(i for i in x if isinstance(i, int)) - sum( int(i) for i in x if isinstance(i, str))
def div_con(x):
    # your code here
    return sum(i for i in x if isinstance(i, int)) - sum( int(i) for i in x if isinstance(i, str))