void main(){
  import std.stdio, std.string, std.conv, std.algorithm;

  auto s=readln.chomp.to!(char[]);

  auto pat=['a', 'i', 'u', 'e', 'o'];
  int tot=0;
  foreach(char c; s){
    if('0'<=c && c<='9'){
      int x=c-'0';
      if(x&1) tot++;
    }else{
      if(count(pat, c)>0) tot++;
    }
  }

  writeln(tot);
}

/*
  vowel => even
  odd => NOT vowel
*/

void rd(T...)(ref T x){
  import std.stdio, std.string, std.conv;
  auto l=readln.split;
  assert(l.length==x.length);
  foreach(i, ref e; x){
    e=l[i].to!(typeof(e));
  }
}
void wr(T...)(T x){
  import std.stdio;
  foreach(e; x) write(e, " ");
  writeln();
}