import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;

class Sum{

    public static void main(String[] args) {
        
        try {
        BufferedReader br = new BufferedReader(new FileReader("adunare.in"));
        int sum=0;
        String line;
        
        while((line=br.readLine())!=null){
        int x=Integer.parseInt(line);
        sum+=x;
        }
        br.close();
        
        FileWriter fw = new FileWriter("adunare.out");
        fw.write(""+sum);
        fw.close();
            }
        
        catch (FileNotFoundException e) {
                System.out.println("File not Found!");
            }
        catch (IOException ex) {
            Logger.getLogger(Sum.class.getName()).log(Level.SEVERE, null, ex);
        }
    }
}