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