Problem Link:-
I am getting correct output for all inputs with in the constraints !
I don`t understand why am i getiing WA?
Kindly please help me out !
I have used sieve for prime factorisation with precomputation (upto 10^6)
and store all the unique prime factors of given input in arraylist
and computed the phi using the n*(1-1/p) formula.
Code Link:-
https://textuploader.com/1dwbq