Submission

Score: 100

User: Atom_SK

Problemset: วิศวกรรมข้อมูล

Language: cpp

Time: 0.002 second

Submitted On: 2025-09-14 19:37:45

#include<bits/stdc++.h>
using namespace std;
string s,q;
int main()
{
    int a;
    cin>>a;
    int b[a];
    for(int i=0;i<a;i++)
    {
        cin>>b[i];
    }
    int r;
    int k=0;
    int sum;
    int ans=0;
    for(int i=0;i<a;i++)
    {
        string m;
        sum=b[i];
        while(sum>0)
        {
            r=sum%2;
            m+='0'+r;
          sum=sum/2;
        }
        reverse(m.begin(),m.end());
        s+=m;
    }
    reverse(s.begin(),s.end());
    int t=1;
    for(auto e:s)
    {
        ans+=t*(e-'0');
        t*=2;
    }
    sort(b,b+a,greater<int>());
    for(int i=0;i<a;i++)
    {
        string m;
        sum=b[i];
        while(sum>0)
        {
            r=sum%2;
            m+='0'+r;
          sum=sum/2;
        }
        reverse(m.begin(),m.end());
        q+=m;
    }
    reverse(q.begin(),q.end());
    int ans2=0;
    t=1;
    for(auto e:q)
    {
        ans2+=t*(e-'0');
        t*=2;
    }
    cout<<max(ans,ans2);
    return 0;
}