#include<iostream>
#include<string>
using namespace std;
int main()
{
    string line;
    getline(cin,line);
    
    int count=0;
    for(int i=0;i<line.length();i++)
    {
        char ch=line[i];
        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;
    
}