// editor1
#include<iostream>
#include<string>
#include<cctype>
using namespace std;
int main()
{
    string s;
    getline(cin,s);
    int count =0;
    for(char c:s)
    {
       c=tolower(c);
        if(c=='a'||c=='e'||c=='i'||c=='o'||c=='u')
        {
            cout++;
        }
    }
    if(count==0)
    
        cout<<"Invaild input";
    
    else
    
        cout<<count;
    
}