#include <iostream>
#include <string>
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;
}