What's the logic behind this problem?

#1

How to solve this problem??
https://www.codechef.com/ZCOPRAC/problems/ZCO14004

#2

first try to solve this https://www.codechef.com/ZCOPRAC/problems/ZCO14002/ problem .
Both the problems are approximately same .
you have to find such combination of elements in the array so that you dont miss out any three consecutive element .
In other words , for every consecutive window of size 3 of the array , you must include at least one element .

#3

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#4

Yes sir my doubt was cleared. I have given feedback now. Please see that I have posted 2 more doubts.
Thank you :relaxed: