代码如下：

#include <bits/stdc++.h>
#define int long long
using namespace std;
int n,a[10001],ans;
signed main() {
	scanf ("%lld",&n);
	for (int i=1;i<=n;i++) 
	 scanf ("%lld",&a[i]);
	for (int i=1;i<=n-1;i++) {
		sort (a+i,a+n+1);
		a[i+1]=a[i]+a[i+1];
		ans=ans+a[i+1];
	}
	cout<<ans;
	return 0;
}