02_OddAndEvenJumps

using System;

class OddAndEvenJumps
{
    static void Main()
    {
        string input = Console.ReadLine().ToLower().Replace(" ", string.Empty);
        int oddJump = int.Parse(Console.ReadLine());
        int evenJump = int.Parse(Console.ReadLine());
        long oddSum = 0;
        long evenSum = 0;
        int oddCount = 1;
        int evenCount = 1;

        for (int i = 1; i <= input.Length; i++)
        {
            if (i % 2 != 0)
            {
                if (oddCount % oddJump != 0)
                {
                    oddSum += input[i - 1];
                }
                else
                {
                    oddSum *= input[i - 1];
                }
                oddCount++;
            }
            else
            {
                if (evenCount % evenJump != 0)
                {
                    evenSum += input[i - 1];
                }
                else
                {
                    evenSum *= input[i - 1];
                }
                evenCount++;
            }
        }
        Console.WriteLine("Odd: " + Convert.ToString(oddSum, 16).ToUpper());
        Console.WriteLine("Even: " + Convert.ToString(evenSum, 16).ToUpper());
    }
}