import java.util.*;
import java.lang.*;
import java.io.*;

// The main method must be in a class named "Main".
class Main {
    public static void main(String[] args) {
        System.out.println("Hello world!");
        String str = "this is manasa eee";
        int count = 0;
        for(int i=0;i<str.length();i++){
            Character ch = str.charAt(i);
            if((ch=='a'||ch=='e'||ch=='i'||ch=='o'||ch=='u')){
                count++;
            }
        }
        System.out.println(count);
    }
}