Multiply Evens by Odds

using System;

class Program
{
    public static void Main(string[] args)
    {
        Console.WriteLine(GetMultipleOfEvenAndOdds(int.Parse(Console.ReadLine())));
    }
    public static int GetSumOfEvenDigits(int num)
    {
        int sum = 0;
        while(num>0)
        {
            int lastdigit = num % 10;
            if(lastdigit%2==0)
            {
                sum += lastdigit;
            }
            num /= 10;
        }
        Console.WriteLine(sum);
        return sum;


    }
    public static int GetSumOfOddDigits(int num)
    {
        int sum = 0;
        while (num > 0)
        {
            int lastdigit = num % 10;
            if (lastdigit % 2 != 0)
            {
                sum += lastdigit;
            }
            num /= 10;
        }
        Console.WriteLine(sum);
        return sum;
    }
    public static int GetMultipleOfEvenAndOdds(int num)
    {
        num = Math.Abs(num);
        int first = GetSumOfEvenDigits(num);
        int second = GetSumOfOddDigits(num);
        return first * second;
    }
}