In this kata, you have to define a function named **func** that will take a list as input.
You must try and guess the pattern how we get the output number and return list - **[output number,binary representation,octal representation,hexadecimal representation]**, but **you must convert that specific number without built-in : bin,oct and hex functions.**
Examples : 
```python
func([12,13,6,3,6,45,123]) returns - [29,'11101','35','1d']
func([1,9,23,43,65,31,63,99]) returns - [41,'101001','51','29']
func([2,4,6,8,10,12,14,16,18,19]) returns - [10,'1010','12','a']
```
def func(l):
    n = sum(l) // len(l)
    return [n] + [format(n, f) for f in "box"]
def func(l):
    n = sum(l) // len(l)
    return [n] + [format(n, f) for f in "box"]