Condense Array to Number

using System;
using System.Linq;

namespace Condense_Array_to_Number
{
    class Program
    {
        static void Main()
        {
            //read the array
            string text = Console.ReadLine();
            int[] arrayNums = text.Split().Select(int.Parse).ToArray();

            //get the array length
            int n = arrayNums.Length - 1;

            if (arrayNums.Length == 1)
                Console.WriteLine(arrayNums[0]);
            else
            {
                while (arrayNums.Sum() - arrayNums[0] != 0)
                {
                    for (int i = 0; i < arrayNums.Length - 1; i++)
                    {
                        arrayNums[i] = arrayNums[i] + arrayNums[i + 1];
                    }
                    arrayNums[n] = 0;
                    n--;
                }
                Console.WriteLine(arrayNums[0]);
            }
        }
    }
}