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

int main ()
{

  string line;
  long a, b;
  ifstream myfile ("sum.in");
  if (myfile.is_open())
  {
      myfile >> a >> b;
      long c = a + b;

      ofstream myfile2("sum.out");
      myfile2 << c;
      myfile2.close();

     myfile.close();
  }


  return 0;
}