10分求调,提交N次了

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll N = 10005;
ll n,a[N],sum;
int main(){
	cin >> n;
	for(ll i = 1; i <= n; i++) cin >> a[i];
	sort(a+1, a+n+1);
	for(ll i = 1; i < n; i++){
		a[i+1] += a[i];
		sum += a[i+1];
	}
	cout << sum;
	return 0;
}