## Hackerrank - Marc's Cakewalk Solution

Marc loves cupcakes, but he also likes to stay fit. Each cupcake has a calorie count, and Marc can walk a distance to expend those calories. If Marc has eaten cupcakes so far, after eating a cupcake with calories he must walk *at least* miles to maintain his weight.

For example, if he eats cupcakes with calorie counts in the following order: , the miles he will need to walk are . This is not the minimum, though, so we need to test other orders of consumption. In this case, our minimum miles is calculated as .

Given the individual calorie counts for each of the cupcakes, determine the minimum number of miles Marc must walk to maintain his weight. Note that he can eat the cupcakes *in any order*.

**Function Description**

Complete the *marcsCakewalk* function in the editor below. It should return a long integer that represents the minimum miles necessary.

marcsCakewalk has the following parameter(s):

*calorie*: an integer array that represents calorie count for each cupcake

**Input Format**

The first line contains an integer , the number of cupcakes in .

The second line contains space-separated integers .

**Constraints**

**Output Format**

Print a long integer denoting the minimum number of miles Marc must walk to maintain his weight.

**Sample Input 0**

```
3
1 3 2
```

**Sample Output 0**

`11`

**Explanation 0**

Let's say the number of miles Marc must walk to maintain his weight is . He can minimize by eating the cupcakes in the following order:

- Eat the cupcake with calories, so .
- Eat the cupcake with calories, so .
- Eat the cupcake with calories, so .

We then print the final value of , which is , as our answer.

**Sample Input 1**

```
4
7 4 9 6
```

**Sample Output 1**

`79`

**Explanation 1**

### Solution in Python

```
def marcsCakewalk(calorie):
return sum(calorie[i]*2**i for i in range(len(calorie)))
input()
calorie = sorted(map(int,input().split()), reverse=True)
print(marcsCakewalk(calorie))
```