Similar to above two cases for positive product .
elif ( pro > 0 and a [ i ] < 0 ) : NEW_LINE INDENT temp = ( a [ i ] + 2 * k ) * b [ i ] NEW_LINE DEDENT elif ( pro > 0 and a [ i ] > 0 ) : NEW_LINE INDENT temp = ( a [ i ] - 2 * k ) * b [ i ] NEW_LINE DEDENT