I found these concepts a bit confusing

#1

I found these concepts very confusing, Can i get any additional resources on these topics
and can you tell me where these topics can be implemented.
I mean in which type of problems we can use bitmasking
Thank You

#2

Hey @saikiran3691
This is a really good tutorial on bitmasks. https://codeforces.com/blog/entry/18169. Please have a look at it.

If your doubt is resolved please mark it as closed.