import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        // Your code here!
        Scanner sc = new Scanner(System.in);
        String a = sc.next();
        String b = sc.next();
        
        String ans = "";
        if(a.equals("0") || a.equals("-0") ){
            ans = b;
        }else if(b.charAt(0) == '-'){
            ans = String.valueOf(Long.parseLong(a) + Long.parseLong(b));
        }else{
            ans = a + b;
        }
        
        System.out.println(ans);
    }
}