Count Vowels

You are given a string s consisting of lowercase English letters. Your task is to count and output the number of vowels in the string.

Vowels are defined as: \(a, e, i, o, u\).

inputFormat

The input consists of a single line containing the string s. The string may be empty and will contain only lowercase English letters.

outputFormat

Output a single integer representing the count of vowels in the string.

hello

2