If it overflows, it overflows. First, add one more digit to the positive number, and then remove the added high digit according to the rules.

-32768 corresponds to a positive number of 32768 (1000000000000), that is, 16 digits.

Then deny 011111111160.

Add 1 to get 100000000000, so the complement corresponding to -32768 is

1000000000000000