Why am i getting NZEC ?

general
1

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace CodeChef

{

class EnormousInput

{

    public static void Main(string[] args)

    {

        ulong n, k;

        n=Convert.ToUInt64(Console.ReadLine());

        k = Convert.ToUInt64(Console.ReadLine());

        ulong result = 0;

        ulong[] arr = new ulong[n];

        for (ulong i = 0; i < n; i++)

        {

            arr[i]=Convert.ToUInt64(Console.ReadLine());

            if (arr[i]%k==0)

            {

                result++;

            }

        }

        Console.WriteLine(result);

    }

}

}

2

C requires a return 0

3

its c#…