用啥队列，用堆他不香吗？
```cpp
#include<bits/stdc++.h>
using namespace std;
priority_queue<int,vector<int>,greater<int> >q;
int n,x,y,z,ans=0;
int main()
{
cin>>n;
for(int i=1;i<=n;i++)
{
cin>>x;
q.push(x);
}
while(q.size()>=2)
{
y=q.top();
q.pop();
z=q.top();
q.pop();
ans+=y+z;
q.push(y+z);
}
cout<<ans;
}
```
by ㌠㌲㌳㌱㌴㌶ @ 2021-04-22 21:40:03