using System;

using System.Collections;

using System.Text;

using System.Linq;

public class Program

{

    public static void Main()

    {

        //int r =fact();

        fact();

        Console.WriteLine("     Hello World-");

    }

    static void fact()

    {

        string str = "Hello World";

        for(int i=0;i<str.Length;i++){

            int c= str.Count() - str.Replace("a","").Count();

            Console.WriteLine(c);

        }

    }

}