A Little Tweak

Vasya will fancy any number as long as it is an integer power of two. Petya, on the other hand, is very conservative and only likes a single integer p (which may be positive, negative, or zero). To combine their tastes, they invented p-binary numbers of the form $2^x+p$, where x is a non-negative integer. For example, some −9-binary ("minus nine" binary) numbers are: −8 (minus eight), 7 $(−8=2^