import java.util.Scanner;

public class Exam {
    public static void main(String[] args) {
       Scanner scanner = new Scanner(System.in);

       String input = scanner.nextLine();
       int sum1 = 1;
       int sum2 = 0;
       int result = 0;
       boolean isTheSame = Integer.parseInt(String.valueOf(input.charAt(1))) == Integer.parseInt(String.valueOf(input.charAt(2)));

       for(int i = input.length() - 1; i >= 0;i--){

           if(i == 0){
              sum1 += Integer.parseInt(String.valueOf(input.charAt(0)));
              break;
           }
           sum1 *= Integer.parseInt(String.valueOf(input.charAt(i)));

           if(isTheSame){
                 sum2 = sum2 + 2;
                 break;
           }

       }
        result = sum1 + sum2;
       System.out.println(result);

    }
}