Doubt in codeforces problem

#1

I am not able to completely understand this problem’s editorial - https://codeforces.com/contest/350/problem/D

#2

codeforces is down right now, can you paste the question as well as the editorial in the reply.

#3

sorry but I do not have the question right now

#4

codeforces is working

#6

which part of the editorial are you unable to understand.

#7

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.