Messaging - Lists

using System;
using System.Linq;
using System.Collections.Generic;



public class Program
{
	public static void Main()
	{
		List<int>nums = Console.ReadLine().Split().Select(int.Parse).ToList();
		string text = Console.ReadLine();

		string result = string.Empty;

		for (int i=0; i<nums.Count; i++)
		{
			int currNum = nums[i];
			int sum=0;
			string currNumAsString = currNum.ToString();

			for (int j=0; j<currNumAsString.Length; j++)
			{
				char currSymbol = currNumAsString[j];
				sum +=(int) currSymbol-48;
			}
			sum+=i;
			if (sum>text.Length)
			{
				sum -= text.Length;
			}

			result += text[sum];

		}
		Console.WriteLine(result);
	}
}