Neighbouring _enemy : https://ide.codingblocks.com/s/226001

#1

it shows wrong answer for some inputs ;can u give me some test cases where it fails.

also please tell me whether my approach is correct or not.
approach is written in the code as comments

#2

@sjduttabbsr2017,
Iterating backwards for each i will make the complexity O(n^2), But we need to do it in O(n).

#3

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