More clarity on prime visit editorial

#1

why is there is a isPrime function written if it’s not being called at primeVisit function

#2

@ishaanveerd,
The sole purpose of isPrime is to check whether a number is prime or not. But in this question we will be using Sieve of Eratosthenes. Hence we don’t need the isPrime function. You can ignore it.

#3

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