import java.util.Scanner;

              class Password {
                 
             public static final int PASSWORD_LENGTH = 8;
             
             public static void main(String[] args) {
             
                     Scanner input = new Scanner(System.in);
                     System.out.print(
                             "1. A password must have at least eight characters.\n" +
                             "2. A password consists of only letters and digits.\n" +
                             "3. A password must contain at least two digits \n" +
                             "Input a password (You are agreeing to the above Terms and Conditions.): ");
                     String s = input.nextLine();
             
                     if (is_Valid_Password(s)) {
                         System.out.println("Password is valid: " + s);
                     } else {
                         System.out.println("Not a valid password: " + s);
                     }
             
                 }
             
                 public static boolean is_Valid_Password(String password) {
             
                     if (password.length() < PASSWORD_LENGTH) return false;
             
                     int charCount = 0;
                     int numCount = 0;
                     for (int i = 0; i < password.length(); i++) {
             
                         char ch = password.charAt(i);
             
                         if (is_Numeric(ch)) numCount++;
                         else if (is_Letter(ch)) charCount++;
                         else return false;
                     }
             
             
                     return (charCount >= 2 && numCount >= 2);
                 }
             
                 public static boolean is_Letter(char ch) {
                     ch = Character.toUpperCase(ch);
                     return (ch >= 'A' && ch <= 'Z');
                 }
             
             
                 public static boolean is_Numeric(char ch) {
             
                     return (ch >= '0' && ch <= '9');
                 }
             
             }