#include<iostream>
#include<string>
using namespace std;
int main(){
    string line;
    if(!getline(cin,line))return 0;
    int count =0;
    for(char c : line){
        char lower_c= tolower(c);
        if(lower_c=='a'||lower_c=='e'||lower_c=='i'||lower_c=='o'||lower_c=='u'||lower_c=='u'){
            count++;
        }
    }
    if(count>0)
    {
        cout<<count<<endl;
        else
        {
            cout<<"Invalid input There were no vowels in this input."<<endl;
        }
    return 0;
}