#include <functional>
#include <iostream>
#include <queue>
#include <vector>
using namespace std;
int main() {
priority_queue<int,vector<int>,greater<int>> smallerH;
int n;
while(cin>>n){
if(n==0) break;
for(int i=0;i<n;i++){
int w;
cin>>w;
smallerH.push(w);
}
int minw=0;
while(smallerH.size()>1){
int a=smallerH.top();
smallerH.pop();
int b=smallerH.top();
smallerH.pop();
int c=a+b;
minw+=c;
smallerH.push(c);
}
cout<<minw<<endl;
}
}

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