Count the Vowels

Difficulty: 1000 1000 ms 128 MB

strings

Count how many vowels (a e i o u, case-insensitive) appear in the given string.

Input: one line containing a string S (1 ≤ |S| ≤ 10⁵) of letters and digits.

Output: one integer — the number of vowels in S.

Sample Tests

hello

2

AEIOU

5

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