Palindrome Checker

This problem requires you to determine whether a given string is a palindrome. A palindrome is a sequence that reads the same backward as forward after ignoring case and non-alphanumeric characters. For example, "A man, a plan, a canal, Panama" is a palindrome. The challenge is to filter out any character that is not a letter or a digit and then check if the processed string is identical to its reverse.

The answer should be output as either True or False based on whether the string is a palindrome.

Note: An empty string is considered a palindrome.

inputFormat

The input consists of a single line containing a string s which may include spaces, punctuation, and mixed cases.

Input Method: Read from standard input (stdin).

outputFormat

Output a single line containing either True if the processed string is a palindrome, or False otherwise.

Output Method: Write to standard output (stdout).

A man, a plan, a canal, Panama

True