using System;

using System.Linq;

using System.Collections.Generic;

​

public class Program

{

    public static void Main()

    {

        var input = 19;

        Console.WriteLine(IsHappy(input));

    }

    public static bool IsHappy(int n) {

        var result = false;

        var nArray = n.ToString().Select(o=> o).ToList();

        nArray.ForEach(i => Console.WriteLine(i));

        var sums = new List<int>();

        foreach(var i in nArray){

        var sum = (i+i);

        sums.Add(sum);

            Console.WriteLine($"Adding {sum}");

        }

        var total = 0;

        foreach(var i in sums){

        total += (total+i);         

        }

        Console.WriteLine(total);

        if(total == 1)

            return true;

​

        return result;

    }

}