#include <iostream>

using namespace std;

int main()
{
    int n,a,i,m=0;  //Problema afiseaza media aritmetica a numerelor impare
    float suma;
    suma=0;
    cout<<"n=";
    cin>>n;
    for(i=1;i<=n;i++){
        cout<<"a=";
        cin>>a;
        if(a%2>0){
        suma=suma+a;
        m++;
        }
    }
        if(m==1) cout<<"Trebuie cel putin 2 numere impare pentru a calcula media aritmetica.";
        else cout<<"media="<<(suma/m);
    return 0;
}