#include<bits/stdc++.h> using namespace std; priority_queue<int, vector<int>, greater<int> > q; int n,x,ans; int main(){ cin>>n; for(int i=1;i<=n;i++){ cin>>x; q.push(x); } while(q.size() > 1){ int x = q.top(); q.pop(); int y = q.top(); q.pop(); ans += x + y; q.push(x + y); } cout << ans << endl; return 0; }