Count Words Starting With Vowel

Count words that start with a vowel in a string.

Your task

Implement this function:

def count_words_starting_with_vowel(s: str) -> int:

Write the function only — the arguments are read for you and the return value is printed automatically.

Arguments arrive as one Python literal per line, in this order: s.

Example

Input

'an apple a day keeps the doctor away'

Output

4