Submission

Score: 100

User: mumumimi

Problemset: วิศวกรรมข้อมูล

Language: cpp

Time: 0.002 second

Submitted On: 2026-10-12 15:26:04

#include <bits/stdc++.h>
using namespace std;
string bi(int n){
    string result ="";
    while(n>0){
        result = result + char(n%2+'0');
        n/=2;
    }
    reverse(result.begin(),result.end());
    return result;
}
bool cmp(string a,string b){
    return a+b>b+a;
}
int main(){
    int n;cin >> n;
    vector<string> v;
    for(int i=0;i<n;i++){
        int x;cin >> x;
        v.push_back(bi(x));
    }
    sort(v.begin(),v.end(),cmp);
    string s = "";
    for(auto c:v){
        s+=c;
    }
    unsigned long long total = stoull(s,nullptr,2);
    cout << total;
}