백준 11399 C++ 풀이

#include <iostream>
#include <algorithm>

using namespace std;

int p[1001];

int main(){
    cin.tie(NULL);
    ios::sync_with_stdio(false);
    int n, k;
    int answer =0;
    cin >> n;
    for (auto i=0; i<n; i++){
        cin >> p[i];
    }
    sort(p, p+n);
    for (auto i=0; i<n;i++){
        answer += p[i]*(n-i);
    }
    cout << answer;

}