Char rotation

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Char_rotation
{
    class Program
    {
        static void Main(string[] args)
        {
            char[] chars = Console.ReadLine().ToCharArray();
            string[] input = Console.ReadLine().Split(' ');
            int[] numbers = new int[input.Length];
            string output = string.Empty;
            for (int i = 0; i < numbers.Length; i++)
            {
                numbers[i] = int.Parse(input[i]);
                if (numbers[i] % 2 == 0)
                {
                    int ASCIICode = chars[i];
                    output += (char)(ASCIICode - numbers[i]);
                }
                else if (numbers[i] % 2 != 0)
                {
                    int ASCIICode = chars[i];
                    output += (char)(ASCIICode + numbers[i]);
                }
            }
            Console.WriteLine(output);
        }
    }
}