#include<iostream>
#include<string>
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 ++;
    }
    cout<<count;
    return 0;
}