#include<iostream>
#include<vector>
#include<numeric>
#include<iomanip>
using namespace std;
class statistics{
    public:
    double mean;
    statistics(): mean(0.0){}
    statistics(const std::vector<int>& data){
        if (data.empty()){
            mean=0.0;
        }
    }
    statistics(const statistics& other): mean(other.mean){
        
    }
};
int main()
{
    int n;
    if(!(std::cin>>n))return 0;
    if(n<0){
        std::cin<<"Invalid input"<<std::endl;
    }
    std::vector<int>data(n);
    for(int i=0;i<n;++i){P
        std::cin>>data[i];
}
    statistics stats1(data);
    statistics stats2=stats1;
    std::cout<<std::fixed<,std::setprecision(0)<<stats2.mean<<std::endl;
    retturn 0;
}