#include<iostream>
#include<string>
using namespace std;
int main()
{
    string s;
    getline(cin,s);
    int count=0;
    for(int i=0;i<s.length();i++)
    {
        char ch=tolower(s[i]);
        if(ch=='a'|| ch=='e'||ch=='i'||ch=='o'||ch=='u')
        count++;
    }
    if(cout==0)
    cout<<"Invalid input";
    else
    cout<<count;
    return 0;
}