#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define lim 100000
#define pb push_back
#define S second
#define pb push_back
#define mp make_pair
#define INF 1e18
#define fr(i,j,k) for(ll i=j;i<=k;i++)
#define frd(i,j,k) for(ll i=j;i>=k;i--)
#define F first
#define sd(n) scanf("%lld",&n)
#define pd(n) prllf("%lld\n",n)
#define db double
#define mod 1000000007
#define pii pair<ll,ll>
ll po(ll a,ll b)
{
    ll r=1;
    while(b>0)
    {
        if(b&1)
        {
            r*=a;
            
        }
        b=b>>1;
        a*=a;
        
    }
    return r;
}
int main()
{
    ll n;
    cin>>n;
    ll a[n];
    for(ll i=0;i<n;i++)
        cin>>a[i];
    sort(a,a+n);
    ll ans=0;
    for(ll i=n-1;i>=0;i--)
        ans+=po(2,n-1-i)*a[i];
    cout<<ans<<endl;
    
}