[NOIP 2004] T3 合并果子

居然和BZOJ 1724完全一样o(╯□╰)o

#include <bits/stdc++.h>

using namespace std;
typedef long long ll;
int n;
priority_queue<int,vector<int>,greater<int> > q;

inline int read()
{
    char ch;
    int num,f=;
    while(!isdigit(ch=getchar())) f|=(num=='-');
    num=ch-'';
    while(isdigit(ch=getchar())) num=num*+ch-'';
    return f?-num:num;
}

int main()
{
    n=read();
    for(int i=;i<=n;i++)
    {
        int x=read();
        q.push(x);
    }

    if(n==){cout << q.top();return ;} 

    ll res=;
    while(q.size()>)
    {
        int x=q.top();q.pop();
        int y=q.top();q.pop();
        res+=(x+y);
        q.push(x+y);
    }
    cout << res;
    return ;
}