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")){ ans = b; }else if(b.charAt(0) == '-'){ ans = String.valueOf(Long.parseLong(a) + Long.parseLong(b)); }else{ ans = a + b; } System.out.println(ans); } }