using System;

public class Program

{

    static char[] numbers = "0123456789".ToCharArray();

    static char[] specialChars = "!§$%&/()=?#+-/*".ToCharArray();

    static char[] letters = "abcdefghijklmnopqrstuvwxyz".ToCharArray();

    public static void Main()

    {

        string[] passwords = 

        {

            "mqyQvCy@G&95>RH",

            "%AGb@ZnE,3g!N=$r",

            "(K9RhsR5TDDJK_ma",

            "Yy9`G-HSDkSn./sf",

            "f3A5PHpv}j%Cq;W`",

            "abc",

            "123"

        };

        foreach(var pw in passwords)

        {

            Console.WriteLine("Password: {0} is safe: {1}",pw, PasswordIsOkay(pw)); 

        }   

    }

    private static bool PasswordIsOkay(string password)

    {

        bool hasNumber = false;

        bool hasLetter = false;

        bool hasSpecialChar = false;

        foreach(char c in password)

        {

            if(char.IsDigit(c) && !hasNumber)

                hasNumber = true;

            if(char.IsLetter(c) && !hasLetter)

                hasLetter = true;

            //if(char.IsSymbol(c) && !hasSpecialChar)

            //  hasSpecialChar = true;

            if(Array.IndexOf(specialChars,c) > -1)

                hasSpecialChar = true;

            if(hasNumber && hasLetter && hasSpecialChar)

                return true;

        }

        return false;

    }

}