Can someone check my solution?

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1

[Here is my solution][1]
[1]: CodeChef: Practical coding for everyone

2

You are not considering the corner cases when last and first soldier is attacked.

3

For first soldier the last soldier will be on his left side and you aren’t checking for that. You can update the if condition to a[(i-1+n)\%n] + a[(i+1)\%n].

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4

Let me give you a simple test case and you can spot out your mistake by yourself.

1\\ 3\\ 5 \, 4\, 1 \\ 7\,5 \,5 \\

Your answer in this case is wrong.

5

Let me give you a simple test case and you can spot out your mistake by yourself.

1\\ 3\\ 5 \, 4\, 1 \\ 7\,5 \,5 \\

Your answer in this case is wrong.

6

You are not considering that first soldier could be attacked from 2 and nth soldier together. Same goes for nth soldier.