Submission

Score: 100

User: NovemNotes

Problemset: ติดตั้งหลอดไฟ

Language: cpp

Time: 0.002 second

Submitted On: 2025-10-17 11:08:19

#include <bits/stdc++.h>
using namespace std;

int main(){
    ios_base::sync_with_stdio(false);cin.tie(NULL);
    int n,sum=0;
    cin >> n;
    vector<int> v(n);for(auto &x:v)cin >> x;
    sort(v.begin(),v.end());
    for(int i=0;i<n;i++){
        if(i!=0)v[i]+=v[i-1];
        sum+=(2*v[i]);
    }
    cout << sum << "\n";
    return 0;
}
/*
3 4 5 7
3 7 12 19
6 14 24 38

1 2
1 3
2 6

*/