import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        //EOF
        while(in.hasNext()){
            int a = in.nextInt();
        	int b = in.nextInt();
        	System.out.println(a + b);
        }
    }
}