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

int main () {
  int s = 0, a = 0;
  ifstream myfile ("adunare.in");
  if (myfile.is_open())
  {
    while (! myfile.eof() )
    {
      getline (myfile, a);
	  s+=a;
    }
    myfile.close();
  }

  ofstream output ("adunare.out");
  if (output.is_open())
  {
    myfile << s;
    myfile.close();
  }

  return 0;
}