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

class Counter {
 // instance variable
   public int count;
 // instance methods
   public void press() { count++;}
   public int look() {return count;}

 // other stuff --- not associated with class instances
   public static void main(String args[]) {
     Counter x = new Counter();
     x.count = 0;
     System.out.println("Say hello a few times and then say goodbye.");
     try {
        Scanner s = new Scanner(System.in);
        while (true) {
           String st = s.next();
           if (st.equalsIgnoreCase("Goodbye")) {
              System.out.println("You said hello " + x.look() + " times. ");
              throw new Exception();
           }
           if (st.equalsIgnoreCase("Hello")) x.press();
        } 
     } catch (Exception e) {}
   }
}