import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Scanner;

public class Main {
	
	public static void main(String []args){
		
		int suma = 0;
		
		try {
			File f=new File("adunare.in");
		
			Scanner s= new Scanner(f);
		
			
			while (s.hasNextInt()){
				suma+=s.nextInt();
			}
			
			
			s.close();
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
			try {
				File g=new File("adunare.out");
				FileWriter wr=new FileWriter(g);
				System.out.println(Integer.toString(suma));
				wr.write(Integer.toString(suma));
				
				wr.close();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}		
		
	}

}