•using System;

using System.Linq;

​

namespace MultiplyEvenByOdds

{

    class Program

    {

        static void Main(string[] args)

        {

            int input = int.Parse(Console.ReadLine());

​

            if (input < 0)

            {

                input = Math.Abs(input);

            }

​

​

​

​

            int sumEven = SumEven(input);

            int sumOdd = SumOdd(input);

            int multiplication = MultiplySums(sumEven, sumOdd);

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            Console.WriteLine(multiplication);

        }

​

        static int SumEven(int input)

        {

            int sumEven = 0;

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            string digits = input.ToString();

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            for (int i = 0; i < digits.Length; i++)

            {

                int currentDigit = int.Parse(digits[i].ToString());

​

                if (currentDigit % 2 == 0)

                {

                    sumEven += currentDigit;

                }

            }

​

            return sumEven;

        }

​

        static int SumOdd(int input)

        {

            int sumOdd = 0;

​

            string digits = input.ToString();

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            for (int i = 0; i < digits.Length; i++)

            {

                int currentDigit = int.Parse(digits[i].ToString());

​

                if (currentDigit % 2 != 0)

                {

                    sumOdd += currentDigit;

                }

            }

            return sumOdd;

​

        }

​

        static int MultiplySums(int sumEven, int sumOdd)

        {

            int multiplication = sumEven * sumOdd;

​

            return multiplication;

        }

​

​

    }

}

​