Password Validation

Given a string representing a password candidate, determine if it is valid based on the following rules:

• The length of the password must be between \(8\) and \(20\) characters (inclusive).
• The password must not contain any whitespace characters.
• The password must contain at least one lowercase letter.
• The password must contain at least one uppercase letter.
• The password must contain at least one digit.

If all the above conditions are met, output VALID; otherwise, output INVALID.

inputFormat

The input consists of a single line containing a string which is the password candidate. The string may include alphanumeric characters and symbols.

outputFormat

Output a single line containing either VALID or INVALID according to whether the password meets the specified criteria.

ValidPass1

VALID