[11399] ATM

#include <iostream>

#include <algorithm>
#include <vector>
using namespace std;
int main()
{
	int testcase, sum = 0, i;
	vector <int> arr;
	cin >> testcase;
	arr.push_back(0);
	for (i = 1; i <= testcase; i++)
	{
		int num;
		cin >> num;
		arr.push_back(num);
	}
	sort(arr.begin(), arr.end());
	for (i = 1; i <= testcase; i++)
	{
		arr[i] = arr[i - 1] + arr[i];
		sum += arr[i];
	}
	cout << sum;
}