Detailed comments in editorial solutions by tester and/or author

I was reading the editorial for CHEVINV , and got the basic concept behind the solution but was having trouble implementing it.
For better understanding, I checked out authors solution of the problem, but couldn’t relate it with the editorial.
So, I would like to suggest the authors/testers to add more comments in the posted solutions to make the code more comprehensible for beginners like me.


Instead of commenting to the author , i would get other basic books regarding this topics which will make me to learn more

same thought!

@xcwgf666 @berezin please help!