#include <fstream>
#include <thread>
long long a ,b;
std::ifstream i("adunare.in");
    std::ofstream cout("adunare.out");
void sum()
{
    cout<<a+b;
}

int main()
{

    i>>a>>b;

    std::thread t (sum);
    t.join();
    return 0;
}