/*
TASK:edi
LANG:C++
*/
#include<iostream>
using namespace std;
int main  ()
{
long long int  n,l;
cin>>n;
long long int  sbor=0;
long long int i;
for( i=0; i<n; i++ ) {
        cin>>l;
    sbor+=l;
    
        }
        cout<<sbor/n<<endl;
      return 0;
        

}
