Clean Palindrome Checker

Given a string s, determine whether it is a palindrome or not. In this problem, you need to ignore spaces, punctuation, and case differences. A palindrome is a string that reads the same forwards and backwards after removing all non-alphanumeric characters.

For example, the input "A man a plan a canal Panama" should yield True, and "random string" should yield False.

You can use the following mathematical expression to represent the condition for a palindrome if s_clean is the cleaned string of length n:

\( \text{s_clean}[i] = \text{s_clean}[n-i-1] \quad \forall\, 0 \le i < n \)

inputFormat

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

The string can contain letters, digits, spaces, and punctuation. Its length can be zero or more.

outputFormat

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

## sample

A man a plan a canal Panama

True

</p>