OddAndEvenJumps

using System;

namespace Odd_and_Even_Jumps
{
	class OddAndEvenJumps
	{
		public static void Main(string[] args)
		{
			string input = Console.ReadLine();
			int oddJump = int.Parse(Console.ReadLine());
			int evenJump = int.Parse(Console.ReadLine());
			string inputLower = input.ToLower().Replace(" ", "");
			char[] inputArr = inputLower.ToCharArray();
			string oddLetters = "";
			string evenLetters = "";
			long sumOdd = 0;
			long sumEven = 0;
			for(int i = 0; i < inputArr.Length; i++)
			{
				if(i % 2 == 0)
				{
					evenLetters = evenLetters + "" + inputArr[i];
				}
				else
				{
					oddLetters = oddLetters + "" + inputArr[i];
				}
			}
			char[] oddLettersArr = evenLetters.ToCharArray();
			char[] evenLettersArr = oddLetters.ToCharArray();
			for(int i = 0 ; i < oddLettersArr.Length; i++)
			{
				int odd = (int)oddLettersArr[i];
				if((i + 1) % oddJump == 0)
				{
					sumOdd *= odd;
				}
				else
				{
					sumOdd += odd;
				}
			}
			for(int i = 0 ; i < evenLettersArr.Length; i++)
			{
				int even = (int)evenLettersArr[i];
				if((i + 1) % evenJump == 0)
				{
					sumEven = sumEven * even;
				}
				else
				{
					sumEven += even;
				}
			}
			string sumEvenHex = sumEven.ToString("X");
			string sumOddHex = sumOdd.ToString("X");
			Console.WriteLine("Odd: " + sumOddHex);
			Console.WriteLine("Even: " + sumEvenHex);

		}
	}
}