#include <iostream>
#include <fstream>

using namespace std;

int main() {
  int a,b;
  ifstream infile;
  ofstream outfile;
  
  infile.open("adunare.in");
  
  if(infile.is_open()) {
    infile >> a >> b;
  }
  else cout << "Unable to open adunare.in" <<endl;
  
  infile.close();
  outfile.open("adunare.out");

  if(outfile.is_open()) {
    outfile << a+b;
  }
  else cout << "Unable to open adunare.out";

  outfile.close();

  return 0;
}