using System;

using System.Security.Cryptography;

public class Program

{

    public static void Main()

    {

        DateTime endTime = DateTime.UtcNow.AddMinutes(1);

        string longString = new string('a', 10000);

        int currentSecond = DateTime.UtcNow.Second;

        int lastSecond = currentSecond;

        for (long i = 0; DateTime.UtcNow < endTime; i++)

        {

            currentSecond = DateTime.UtcNow.Second;

            if (lastSecond != currentSecond)

            {

                lastSecond = currentSecond;

                Console.WriteLine("One Second");

            }

            string hashString = $"{i}{longString}{i}";

            byte[] hash = SHA512.HashData(System.Text.Encoding.UTF8.GetBytes(hashString));

        }

    }

}