Given two integers `a` and `b`, which can be positive or negative, find the sum of all the numbers between including them too and return it. If the two numbers are equal return `a` or `b`.
**Note:** `a` and `b` are not ordered!
## Examples
```python
get_sum(1, 0) == 1   // 1 + 0 = 1
get_sum(1, 2) == 3   // 1 + 2 = 3
get_sum(0, 1) == 1   // 0 + 1 = 1
get_sum(1, 1) == 1   // 1 Since both are same
get_sum(-1, 0) == -1 // -1 + 0 = -1
get_sum(-1, 2) == 2  // -1 + 0 + 1 + 2 = 2
```
```C
get_sum(1, 0) == 1   // 1 + 0 = 1
get_sum(1, 2) == 3   // 1 + 2 = 3
get_sum(0, 1) == 1   // 0 + 1 = 1
get_sum(1, 1) == 1   // 1 Since both are same
get_sum(-1, 0) == -1 // -1 + 0 = -1
get_sum(-1, 2) == 2  // -1 + 0 + 1 + 2 = 2
```
def get_sum(a,b):
    sum = 0
    if a==b:
        return a
    if b<a:
        a, b = b, a
    for i in range(a,b+1):
        sum += i
    return sum
def get_sum(a,b):
    sum = 0
    if a==b:
        return a
    if b<a:
        a, b = b, a
    for i in range(a,b+1):
        sum += i
    return sum