OddAndEvenJumps

using System;
namespace OddAndEvenJumps
{
    class OddAndEvenJumps
    {
        static void Main()
        {
            string input =  Console.ReadLine();//"Software University";
            int oddJump =  int.Parse(Console.ReadLine());
            int evenJump = int.Parse(Console.ReadLine());
            input = input.ToLower();
            input = input.Replace(" ", string.Empty);
            string oddLetters = "";
            string evenLetters = "";

            for (int i = 0; i < input.Length; i++)
            {
                if (i % 2 == 0)
                {
                    oddLetters += input[i];
                }
                else
                {
                    evenLetters += input[i];
                }
            }

           long  oddResult = 0;
           int nextIndex = oddJump - 1;
            for (int i = 0; i < oddLetters.Length; i++)
            {
                if (i != nextIndex)
                {
                    oddResult += (int)oddLetters[i];
                }
                else
                {
                    oddResult *= (int)oddLetters[i];
                    nextIndex += oddJump;
                }
            }
            Console.WriteLine("Odd: {0}", Convert.ToString(oddResult ,16).ToUpper());

            long evenResult = 0;
            nextIndex = evenJump - 1;
            for (int i = 0; i < evenLetters.Length; i++)
            {
                if (i != nextIndex)
                {
                    evenResult += (int)evenLetters[i];
                }
                else
                {
                    evenResult *= (int)evenLetters[i];
                    nextIndex += evenJump;
                }
            }
            Console.WriteLine("Even: {0}", Convert.ToString(evenResult, 16).ToUpper());
        }
    }
}