#include <iostream>
#include <fstream>

using namespace std;

int main()
{
    fstream f("adunare.in", ios::in);
    fstream g("adunare.out", ios::out);

    if(!f || !g){
        cout << "Eroare la deschiderea fisierului!" << endl;
        return -1;
    }

    else{
            int s = 0, nr;
                while(f >> nr)
                        s += nr;
            g << s;
    }

    //inchidem fisierele
    f.close();
    g.close();
    cout << "Program finished executing!" << endl;

    return 0;
}