In march long challenge tier3 , we have to consider a case in which one person can have multiple friends.
eg: 111 (means in this case the middle person is having 2 friends one on its left and other one on right side)
I am not sure if we are allowed to provide clarifications, sorry.
The question is clear i think. It is asking for groups not friends.
If you have doubts ask in the comments section at the bottom of the page
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Ask these queries in the comments section at the bottom of the problem page
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