10951 : A + B - 4

import java.util.Scanner;

public class Main {
	public static void main(String[] args) throws Exception {

		Scanner sc = new Scanner(System.in);

		int sum = 0;

		while (sc.hasNextInt()) {
			int num1 = sc.nextInt();
			int num2 = sc.nextInt();

			sum = num1 + num2;
			System.out.println(sum);

		}
		sc.close();
	}
}