#include <iostream>
#include <fstream>
using namespace std;

int main()
{
    ifstream in("adunare.in");
    ofstream out("adunare2.out");

    int a, b;

    in >> a;
    in >> b;

    out << a + b;

    in.close();
    out.close();

    ifstream in2("adunare2.out");
    ofstream out2("adunare.out");
    int sum;
    in2 >> sum;
    out2 << sum;

    in2.close();
    out2.close();

    return 0;
}