#include<iostream>
using namespace std;
 
int main()
{
    int a,b,c;
    cout<<"Unesi a: ";
    cin>>a;
    cout<<"Unesi b: ";
    cin>>b;
    cout<<"Unesi c: ";
    cin>>c;
    int suma=a+b+c;
    cout<<"Aritmeticka sredina unesenih brojeva iznosi: "<<suma/3<<endl;
    return 0;
}