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

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

}