#include <iostream>
using namespace std;
int main()
{
int n,v[30],i,j,aux,s=0;
cin>>n;
for(i=0;i<n;i++)
cin>>v[i];
//aranjez crescator doar celen valori
for(i=0;i<n;i++)
for(j=i+1;j<n;j++)
if(v[i]>v[j])
{aux=v[i];v[i]=v[j];v[j]=aux;
}
//adun ultimele n/2 valori
for(i=n-n/2;i<n;i++) s+=v[i];
cout<<s;
return 0;
}