#include<iostream>
#include<string>
using namesapace std;
int main(){
    string s;
    getline(cin,s);
    
    int count=0;
    
    for(charc:s){
        c=tolower(c);
        if(c=='a'||c=='e'||c=='i'||c=='o'||c=='u'){
            count++;
        }
    }
    
    if(count>0)
     cout<<count;
    else
    cout<<"Invalid input there were no vowels in the input";
    return 0;
}