import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        
        // 读取输入字符串
        String a = scanner.nextLine();
        String b = new StringBuilder(a).reverse().toString();
        
        // 将字符串转换为整数
        int x = Integer.parseInt(a);
        int y = Integer.parseInt(b);
        
        // 输出结果
        System.out.println(x + y);
        
        scanner.close();
    }
}