#include <bits/stdc++.h>
using namespace std;
typedef long long LL;
priority_queue<LL> q;
int main()
{
    int n;scanf("%d",&n);
    for(int i=1;i<=n;i++)
    {
        LL x;scanf("%lld",&x);
        q.push(-x);
    }
    LL ans=0;
    for(int i=1;i<=n-1;i++)
    {
        LL x=0;
        x+=q.top();q.pop();
        x+=q.top();q.pop();
        ans+=(-x);
        q.push(x);
    }
    printf("%lld",ans);
    return 0;
}