Number counts dump way

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
//Read a list of integers in range [0…1000] and print them in ascending order along with their number of occurrences.
namespace count_numbers
{
    class Program
    {
        static void Main(string[] args)
        {
            List<int> nums = Console.ReadLine().Split().Select(int.Parse).ToList();
            List<int> occurances = new List<int>();
            for (int i = 0; i < 1000; i++)
            {
                occurances.Add(0);
            }

            foreach (var num in nums)
            {
                occurances[num]++;
            }
            for (int num = 0; num < occurances.Count; num++)
            {
                if (occurances[num] > 0)
                {
                    Console.WriteLine(num + " -> " + occurances[num]);
                }

            }
        }
    }
}