#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;
    else 
      cout<<"Invalid input";
    return 0;
}