import java.util.Scanner;

public class hello {

    public static void main(String[] args)

    {

        Scanner cin = new Scanner(System.in);

                {

                    while(cin.hasNextInt())

                    {

                        int a = cin.nextInt();

                        int b = cin.nextInt();

                        System.out.println(a+b);

                    }

                }

    }

}