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# XOR-ing the Subarrays!

Problem Description

Given an integer array A of size N.

You need to find the value obtained by XOR-ing the contiguous subarrays, followed by XOR-ing the values thus obtained. Determine and return this value.

For example, if A = [3, 4, 5] :

```Subarray    Operation   Result
3       None            3
4       None            4
5       None            5
3,4   3 XOR 4         7
4,5   4 XOR 5         1
3,4,5    3 XOR 4 XOR 5   2
```

Now we take the resultant values and XOR them together:

3 ⊕ 4 ⊕ 5 ⊕ 7 ⊕ 1⊕ 2 = 6 we will return 6.

Problem Constraints

1 <= N <= 105

1 <= A[i] <= 108

Input Format

First and only argument is an integer array A.

Output Format

Return a single integer denoting the value as described above.

Example Input

Input 1:

``` A = [1, 2, 3]
```

Input 2:

``` A = [4, 5, 7, 5]
```

Example Output

Output 1:

``` 2
```

Output 2:

``` 0
```

Example Explanation

Explanation 1:

``` 1 ⊕ 2 ⊕ 3 ⊕  (1 ⊕ 2 ) ⊕ (2 ⊕ 3) ⊕ (1 ⊕ 2 ⊕ 3) = 2
```

Explanation 2:

``` 4 ⊕ 5 ⊕ 7 ⊕ 5 ⊕ (4 ⊕ 5) ⊕ (5 ⊕ 7) ⊕ (7 ⊕ 5) ⊕ (4 ⊕ 5 ⊕ 7) ⊕ (5 ⊕ 7 ⊕ 5) ⊕ (4 ⊕ 5 ⊕ 7 ⊕ 5) = 0
```

NOTE: You only need to implement the given function. Do not read input, instead use the arguments to the function. Do not print the output, instead return values as specified. Still have a question? Checkout Sample Codes for more details.
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