import java.util.ArrayList;
import java.util.Scanner;

public class Main {
	static int sum(ArrayList<Integer> list) {
		int sum = 0;
		for (int number: list) {
			sum += number;
		}
		return sum;
	}

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        ArrayList<Integer> numbers = new ArrayList<Integer>();
        while (sc.hasNextInt()) {
        	numbers.add(sc.nextInt());
        }
        System.out.println(sum(numbers));

        if (sc.hasNext()) {
        	System.out.println(sc.next());
        }
    }
}