Valid Palindromic Password

You are given a password as a string. You need to verify if the password satisfies all of the following criteria:

• The length of the password is at least 6 characters.
• The password contains at least one uppercase letter and at least one digit.
• The password is a palindrome, i.e., it reads the same forward and backward. In mathematical terms, a string \(S\) is a palindrome if \(S = S^R\), where \(S^R\) represents the reverse of \(S\).

If all criteria are met, print VALID; otherwise, print INVALID.

inputFormat

The input consists of a single line containing the password string. Read the input from standard input (stdin).

outputFormat

Output a single line containing either 'VALID' or 'INVALID' based on whether the password meets the criteria. Write the output to standard output (stdout).## sample

A1B2B1A

VALID