Submission

Score: 100

User: SayRo

Problemset: วิศวกรรมข้อมูล

Language: cpp

Time: 0.004 second

Submitted On: 2026-10-04 10:06:47

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

bool compare(string &a, string &b){
    return (a+b)>(b+a);
}

int main(){
    cin.tie(nullptr)->sync_with_stdio(0);
    int n;
    string ans;
    vector<string> v;
    cin>>n;
    while(n--){
        int x;
        string s="";
        cin>>x;
        while(x!=0){
            x%2==0?s+='0':s+='1';
            x/=2;
        }
        reverse(s.begin(),s.end());
        v.push_back(s);
    }
    sort(v.begin(),v.end(),compare);
    for(auto i : v){
        ans+=i;
    }
    int f=0;
    for(int i=0;i<ans.size();i++){
        if(ans[i]=='1') f+=pow(2,ans.size()-i-1);
    }
    cout<<f;
}