package com.company;

import java.util.Scanner;

public class Main {
    public static int calcSumOfEvens(int number) {
        int sumOfEvens = 0;
        int digit;
        while (Math.abs(number) > 0) {
            digit = number % 10;
            number /= 10;
            if (digit % 2 == 0) {
                sumOfEvens += digit;
            }
        }
        return Math.abs(sumOfEvens);
    }

    public static int calcSumOfOdds(int number) {
        int sumOfOdds = 0;
        int digit;
        while (Math.abs(number) > 0) {
            digit = number % 10;
            number /= 10;
            if (digit % 2 != 0) {
                sumOfOdds += digit;
            }
        }
        return Math.abs(sumOfOdds);
    }

    public static int calcMultiplication(int number) {
        int sumOfEvens = calcSumOfEvens(number);
        int sumOfOdds = calcSumOfOdds(number);
        return Math.abs(sumOfEvens * sumOfOdds);
    }


    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int number = Integer.parseInt(scanner.nextLine());
        System.out.println(calcMultiplication(number));
    }
}