HDU1000

import java.util.Scanner;

public class HDU1000 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int a = 0;
        int b = 0;
        int sum = 0;
        while (sc.hasNext()) {
            a = sc.nextInt();
            b = sc.nextInt();
            sum = a + b;
            System.out.println(sum);
        }
    }
}