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Problem
Read from standard input a string of at most `255` characters, which
may contain uppercase letters, lowercase letters, spaces, and
punctuation marks. Determine and print the number of vowels in the string.
The vowels are the letters `a`, `e`, `i`, `o`, `u`, both in lowercase
and uppercase.
Input format
Input
input.txt
The program reads from standard input a single line containing the string `s`. - the string has at most `255` characters - the string may be empty (in which case the answer is `0`)
Output format
Output
output.txt
The program prints to standard output a single natural number: the count of vowels in the string, followed by a newline.
Example
input
Bacalaureat
output
6
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Sample cases (from the problem)
Sample Case 1
Input
Bacalaureat
Expected output
6
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