using System;
public class Program
{
public static void Main()
String word=Console.ReadLine();
char[] a={'a','e','i','o','u'};
int count=0;
for(int i=0;i<a.Length;i++){
for(int j=0;j<word.Length;j++){
if(a[i]==word(j))
count++;
}
Console.WriteLine(count);