#include<bits/stdc++.h> using namespace std; string s; int ans; int main(){ getline(cin,s); for(int i=0;i<s.size();i++){ if(s[i]>='A'&&s[i]<='Z') s[i]+=32; if(s[i]=='a'||s[i]=='e'||s[i]=='i'||s[i]=='o'||s[i]=='u'){ ans++; } } cout<<ans; return 0; }