#include<iostream>
using namespace std;
int main(){
    string s;
    getline(cin,s);
    int count=0;
    for(char c:s){
        if(c=='a'||c=='e'||c=='i'||c=='o'||c=='u'||
        c=='A'||c=='E'||c=='I'||c=='O'||c=='U'||){
            count++;
        }
        if(count == 0){
             cout<<"Invalid input";
        }
        else{
            cout<<count;
            return 0;
        }
    }
}