[Source](https://www.hackerrank.com/challenges/a-very-big-sum)
# Problem statement
Calculate and print the sum of the elements in an array, keeping in mind that some of those integers may be quite large.


**Function Description**

Complete the aVeryBigSum function in the editor below.  It must return the sum of all array elements.

aVeryBigSum has the following parameter(s):


* ar: an array of integers . 

**Input Format** 

The first line of the input consists of an integer ![](./Resources/Element1.svg). 


The next line contains ![](./Resources/Element1.svg) space-separated integers contained in the array. 


**Output Format**

Print the integer sum of the elements in the array.


**Constraints** 


![](./Resources/Element2.svg) 


![](./Resources/Element3.svg)  


**Sample Input**  

```
5
1000000001 1000000002 1000000003 1000000004 1000000005
```

**Output**   

```
5000000015
```

**Note:** 

The range of the 32-bit integer is ![](./Resources/Element4.svg).

 

When we add several integer values, the resulting sum might exceed the above range. You might need to use long long int in C/C++ or long data type in Java to store such sums.  

