I’m trying to write a code that takes an array of integers, then returns the maximum sum you can get from different combinations of the values in the integer.

I also want to be able to see the particular combination that gives this as well.

And with the logic behind it if possible

```
What I tried didn't work
I'm expecting something like this:
For instance, in [1,2,3,4], the answer will be 10 with list:[1,2,3,4]
with [2,-3,7,-4,9], the answer will be 18 with [2,7,9]
and with [3, -4, -1, -3, ], the answer will be 2 with [3,-1]
```

### >Solution :

The simple solution is to sum every positive number in the list:

```
print(sum(x for x in nums if x>0))
```

If you always need to add at least 2 numbers, then one option is to sort the list, and if the second last number is negative, add the last 2 numbers together:

```
nums = [3, -4, -1, -3]
nums = sorted(nums)
if nums[-2] < 0:
print(nums[-2] + nums[-1])
else:
print(sum(x for x in nums if x>0))
```