import java.util.Arrays;
import java.util.Scanner;

public class MultiplyEvensbyOdds {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int input = Integer.parseInt(scanner.nextLine());
        if(input<0){
            input=input*(-1);
        }
        int multiple = getMulOffEandO(input);
        System.out.println(multiple);


    }

    private static int getMulOffEandO(int number) {
        int evenSum = getSumOfEven(number);
        int oddSum = getSumOfOdd(number);
        return evenSum * oddSum;
    }

    private static int getSumOfOdd(int number) {
        int oddSum = 0;
        while (number != 0) {
            // num = num/10
            int digits = number % 10;
            if(digits % 2 ==1) {
                oddSum += digits;
            }
            number /=10;

        }
        return oddSum;
    }

    private static int getSumOfEven(int number) {
        int evenSum = 0;
        while (number != 0) {
            // num = num/10
            int digits = number % 10;
            if(digits % 2 ==0) {
                evenSum += digits;
            }
            number /=10;

        }
        return evenSum;

    }
}