Could not understand the question

hi I could not understand this question could you please help me out

hi @gurkirat2600
A simple approach would be to simply make two arrays of stacks and solve as guided. We can precompute the primes using sieve to save time. This approach will take a lot of space as the sizes of arrays will be size = q+1.
Refer this code -->

I hope I’ve cleared your doubt. I ask you to please rate your experience here
Your feedback is very important. It helps us improve our platform and hence provide you
the learning experience you deserve.

On the off chance, you still have some questions or not find the answers satisfactory, you may reopen
the doubt.