Unable to understand the solution given in editorial

#1

I am unable to understand the code given in editorial maybe it is written in c++,can you provide me a solution in java

#2

Hii Vedant,
This question has to be done through sieve method so first see the video on sieve method and then try this question.

#3

Hii Vedant

As you are not responding to this thread, I am marking your doubt as Resolved for now. Re-open it if required.
Please mark your doubts as resolved in your course’s “ Ask Doubt ” section, when your doubt is resolved.