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