#include <iostream>
using namespace std;

bool isSavrsen(int br)
{
    int suma = 0;
    for (int i = 1; i < br; i++)
    {
        if (br % i == 0)
            suma += i;
    }
    if (suma == br)
        return true;
    else
        return false;
}
int main()
{

    int a;
    int b;
    cout << "Unesite granice intervala: ";
    cin >> a >> b;
    cout << "Unesite granice intervala: ";
    int suma = 0;
    int brojac = 0;
    for (int i = a; i < b; i++)
    {
        if (isSavrsen(i))
        {
            cout << i << endl;
            suma += i;
            brojac++;
        }
    }
    int arS = suma / brojac;
    cout << "\nArt. sredina = " << arS << endl;

    return 0;
}