import java.util.Scanner;
class Main {

  static String checkLength(String input) {
    int length = 0;
    for (int i = 0; i < input.length(); i++) {
      length++;
    }
    if (length > 5 && length < 11) {
      return "valid";
    } else {
    System.out.println("Password must be between 6 and 10 characters");
    return "not valid";
    }
  }

  static String checkLettersAndDigits (String input) {
    for (int i = 0; i < input.length() - 1; i++) {
      char symbol = input.charAt(i);
      if (!(symbol > 47 && symbol < 58) && !(symbol > 64 && symbol < 91) && !(symbol > 96 && symbol < 123)) {
        System.out.println("Password must consist only of letters and digits");
        return "not valid";
      }
    }
    return "valid";
  }

  static String checkForDigits (String input) {
    int counter = 0;
    for (int i = 0; i < input.length() - 1; i++) {
      char symbol = input.charAt(i);
      if (symbol > 47 && symbol < 58) {
        counter++;
      }
    }
    if (counter >= 2) {
      return "valid";
    }
    System.out.println("Password must have at least 2 digits");
    return "not valid";
  }

  public static void main(String[] args) {

    Scanner scanner = new Scanner(System.in);

    String input = scanner.nextLine();

    checkLength(input);
    checkLettersAndDigits(input);
    checkForDigits(input);

    if (checkLength(input).equals("valid") && checkLettersAndDigits(input).equals("valid") && checkForDigits(input)
    .equals("valid")) {
      System.out.println("Password is valid");
    }
  }
}