Given a list of integers and a number K, return which contiguous elements of the list sum to K.

Write a function `solve`

that have the following parameter(s):

1.) *arr = array of integer*

2.) *k = integer*

**Example**

Input:

`[1, 2, 3, 4, 5]`

`k = 9`

Output:

`[2, 3, 4]`

**Explanation**

A list of integers is given, [1, 2, 3, 4, 5] and K equals to 9, so it will return [2, 3, 4] since 2 + 3 + 4 = 9.

**Constraints**

• The value of the array should be greater than 0 and less than 100.

• The list of integers should be greater than 0 and less than 100.