Please ,Help me out!

Dont know what is happening in this code … what is bitset , why we are using vectors if vector topic is not completely explained ??

After Prime Visit i am not able to clearly understand what is going in the codes ??

Hey @piyushkumar999999 do one thing , first cover your vector, bit set concept and all other concepts which you are not familiar with and then you can go for this topic :slight_smile: