WA in exponential game

#1

https://ide.codingblocks.com/s/211943 - This is my code ide for the problem exponential game , could you tell me if my approach is correct please ? I am getting WA ,
for each state I am calculating the grundy numbers and taking their XOR

#2

@debyian
Hey buddy
Please have a look at the approach here https://www.hackerearth.com/pt-br/problem/algorithm/mancunian-and-factorization-game-b8794702/editorial/
Hope this helps
Happy Coding !