I have read the editorial but yet not cleared enough about the approach. Can anyone provide me some hints? How to approach this problem? I just need to know about the observation that how you will approach the problem to solve it.
Can anyone explain the approach?
I have read the editorial but yet not cleared enough about the approach. Can anyone provide me some hints? How to approach this problem? I just need to know about the observation that how you will approach the problem to solve it.