백준 소스코드 [C++] 11399 ATM

https://www.acmicpc.net/problem/11399

11399번: ATM

백준 소스코드 [C++] 11399 ATM

#include <iostream>
#include <algorithm>
using namespace std;
int main() {
	int n,sum=0;
	cin >> n;
	int* arr = new int[n];
	for (int i = 0;i < n;i++) cin >> arr[i];
	sort(arr, arr + n);
	for (int i = 0;i < n;i++) sum = sum + (n - i) * arr[i];
	cout << sum;
	return 0;
}