#include <iostream>
#include<string>
using namespace std;

int main(){
    string line;
    getline(cin, line);
    
    int count = 0;
    
    for(char ch: line){
        if(ch == 'a' || ch == 'e' || ch == 'i' || ch == 'o' || ch == 'u' || ch == 'A' || ch == 'E' || ch =='I' || ch =='O' || ch == "U"){
            count++;
        }
    }
    if(count == 0)
       cout << "Invalid input";
       else
       cout << count;
       return 0;
    }