using System;
using System.Linq;
namespace apps
{
    class Program
    {
        static void Main()
        {
            string password = Console.ReadLine();
          output(password);
        }

        static void output(string password)
        {
            int Digits = password.Count(char.IsDigit);
            int Letters = password.Count(char.IsLetter);
            if (password.Length < 6 || password.Length > 10){Console.WriteLine("Password must be between 6 and 10 characters");}
            if (Digits + Letters < password.Length) { Console.WriteLine("Password must consist only of letters and digits"); }
            if (Digits >= 2) { Console.WriteLine("Password is valid"); } else { Console.WriteLine("Password must have at least 2 digits"); }

        }

    }
}