Prva zadaca

#include <iostream>

using namespace std;

int main()
{
    int a,b,c,n,m;
    cout<<"Vnesi ja prvata plata"<<endl;
    cin>>a;
    cout<<"Vnesi ja vtorata plata"<<endl;
    cin>>b;
    cout<<"Vnesi ja tretata plata"<<endl;
    cin>>c;
    n=(a+b+c)/3;
    cout<<"Prosecnata plata e"<<n<<endl;
    return 0;
}