Count Palindromic Words

You are given a string, and your task is to count the number of palindromic words it contains. A word is considered palindromic if it reads the same forwards and backwards. Before checking, you must convert the entire string to lower-case and remove all punctuation.

For example, consider the input:

A man, a plan, a canal, Panama!

After processing, this string yields 3 palindromic words.

Note: A word consisting of a single character is considered a palindrome.

inputFormat

The input consists of a single line which is a string. The string may contain letters, punctuation, and spaces.

outputFormat

Output a single integer denoting the number of palindromic words in the input string.

Hello world

0