#include<bits/stdc++.h> using namespace std; priority_queue<int, vector, greater > q; int n,ans; signed main(){ cin>>n; for(int i=1;i<=n;i++){ int x; 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; return 0; }