using System;

using System.Linq;

public class Program

{

​

    public static void Main()

    {

        Console.WriteLine(LooksLikeDecryptedPassword(""));

        Console.WriteLine(LooksLikeDecryptedPassword(" "));

        Console.WriteLine(LooksLikeDecryptedPassword("pa33word"));

        Console.WriteLine(LooksLikeDecryptedPassword("���~�G�˰••g��*�•�••-\r���•+•��"));

        Console.WriteLine(LooksLikeDecryptedPassword("_ab=+/><`~`"));

        Console.WriteLine(LooksLikeDecryptedPassword("ąĄŚŹ"));

        Console.WriteLine(LooksLikeDecryptedPassword("•"));

    }

public static bool LooksLikeDecryptedPassword(string input)

    {

        Console.Write($"'{input}' - \t\t\t\t");

        if(string.IsNullOrEmpty(input.Trim()))

        {

        return false;

        }

            return !input.Any(c => 

                 char.IsControl(c) 

                );

    }

}