import java.util.Scanner;

/**
 * Created by chshru on 2017/11/4.
 */
public class D {

    public static void main(String[] args) {

        Scanner cin = new Scanner(System.in);
        while (cin.hasNext()) {
            System.out.println(cin.nextLong() + cin.nextLong());
        }
        cin.close();
    }
}