text: /**
   *	Author:  Sohel Rana
   *	Date:    2021-12-28 19:56:30
   *	Task:    I_Count_Vowels 
  **/
  #include <bits/stdc++.h>
  
  using namespace std;
  
  int cn;
  
  void cnt(string s, int len, int i) {
      if (i >= len){
          return;
      }
      cnt(s, len, i + 1);
      if (s[i] == 'a' or s[i] == 'A' or s[i] == 'e' or s[i] == 'E' or s[i] == 'i' or s[i] == 'I' or s[i] == 'o' or s[i] == 'O' or s[i] == 'u' or s[i] == 'U'){
          cn++;
      }
  }
  int main() 
  {
      //freopen("in.txt", "r", stdin);
      //freopen("out.txt", "w", stdout);
      //unsyncIO;
      string s;
      getline(cin,s);
      cnt(s, (int)s.length(), 0);
      cout << cn << endl;
  
      return 0;
  }