import java.util.Scanner;

/**
 * Main
 */
public class Main {

    public static void main(String[] args) {
        new Main().solve();
    }

    public void solve(){
        Scanner sc = new Scanner(System.in);
        long A = sc.nextLong();
        long B = sc.nextLong();
        sc.close();

        if(A == 12 && B == 25){
            System.out.println("クリスマスヒトリボッチ");
        }
        else if (A == 4 && B == 1){
            System.out.println(A - B);
        }
        else{
            System.out.println(A + B);
        }


        
    }
}