using System;
using System.Linq;

namespace exercise_13
{
    class Program
    {
        static void Main(string[] args)
        {
            string password = Console.ReadLine();

            if (WrongPassword(password))
            {
                Console.WriteLine("Password is valid");
            };
        }

        static bool WrongPassword(string password)
        {

            bool atLeastTwoDigits = password.All(Char.IsDigit);
            bool letteranddigit = password.All(Char.IsLetterOrDigit);
            bool passValidation = true;

            if (password.Length < 6 || password.Length > 10)
            {
                passValidation = false;
                Console.WriteLine("Password must be between 6 and 10 characters");
            }
            if (!letteranddigit)
            {
                passValidation = false;
                Console.WriteLine("Password must consist only of letters and digits");
            }

            int count = 0;
            for (int i = 0; i < password.Length; i++)
            {
                char symbol = password[i];
                if (char.IsDigit(symbol))
                {
                    count++;
                }
            }

            if (count < 2)
            {
                passValidation = false;
                Console.WriteLine("Password must have at least 2 digits");
            }

            return passValidation;
        }
    }
}