题解

#include<iostream>
#include<queue>
using namespace std;
int main(){
    int n,sum=0;
    priority_queue<int,vector<int>,greater<int>>q;
    cin>>n;
    for(int i=0;i<n;i++){
        int x;
        cin>>x;
        q.push(x);
    }
    for(int i=0;i<n-1;i++){
        int x=q.top();
        q.pop();
        int y=q.top();
        q.pop();
        q.push(x+y); 
        sum+=x+y;
    }
    cout<<sum;
    return 0;
}