Store chosen flags more memory efficiently

[PackmanDude]

The current approach is storing copies of physical addresses, which could be considered an array of uintptr_t. Previously, an array of size_t was used instead, but additional dereferencing caused an overhead.

[PackmanDude]

Also, storing each individual index is not efficient. Better would be to implement it with something like a struct holding an index of the flag in a static array and its count to calculate percentages accurately without holding too much in memory.