Valid Palindrome Checker

Given a string S, determine whether it is a valid palindrome. A palindrome reads the same backwards as forwards after removing all non-alphanumeric characters and ignoring case. In other words, after filtering out spaces, punctuation, and other non-alphanumeric symbols, the string should be compared with its reversal.

For example, the string "A man, a plan, a canal: Panama" is considered a palindrome.

Your task is to process the input from standard input and output the result to standard output as specified.

inputFormat

The input consists of a single line containing the string S.

outputFormat

Output one line: True if the input string is a palindrome according to the above criteria, or False otherwise.

## sample

A man, a plan, a canal: Panama

True

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