#include<bits/stdc++.h>

using namespace std;
int main()
{
    string s;
    int count=0;
    cin>>s;
    for(int i=0; i<s.size(); i++)
    {
        if(s[i]!='a' || s[i]!='e' || s[i]!='i' || s[i]!='o' || s[i]!='u')
        {
            count++;
        }
    }
    cout<<count;
}