#include<iostream>
#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')
        count++;
    }
    if(count == 0)
    cout << "Invalid input";
    else
    cout << count;
    return 0;
}