#include<iostream>
#include<cmath>
#include<iomanip>
#include<algorithm>
#include<cstdlib>
#include<cstring>
#include<vector>

#define ll long long
#define sz(x) int(x.size())
#define all(x) x.begin(),x.end()
using namespace std;

void Fast_IO(){
    ios_base::sync_with_stdio(false), cin.tie(nullptr), cout.tie(nullptr);
    #ifndef ONLINE_JUDGE
        freopen("input.txt", "r", stdin), freopen("output.txt", "w", stdout);
    #endif
}

 int counter=0;
string s;
int count(int idx){

if(idx == 0) return counter;
if(s[idx] == 'a' || s[idx] == 'e' || s[idx] == 'o' || s[idx] == 'i' || s[idx] == 'u' || s[idx] == 'A' || s[idx] == 'E' || s[idx] == 'O' || s[idx] == 'I' || s[idx] == 'U') counter++;
return count(idx-1);
}



void solve(){


getline(cin,s);
cout<<count(sz(s)-1);

}

int main(){
    Fast_IO();
int t =1;
//cin>>t;
while(t--){
solve();
}
return 0;
}