import java.util.*;
import java.lang.*;
import java.io.*;
 
class Ideone
{
    public static void main (String[] args) throws java.lang.Exception
    {
        Derived d = new Derived();
        d.getMe().doADerivedThing();
    }
 
	private static class Base
    {
        public Base getMe() {
            return this;
        }
    }
 
    private static class Derived extends Base
    {
        public int doADerivedThing() {
            return 100;
        }
    }
}

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