import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;
import java.lang.reflect.*;


class Singleton{
    static private Singleton s = null;
    String str =" ";
    private Singleton(){
        
    }
    
    public static Singleton getSingleInstance()
    {
        if(s==null)
            s = new Singleton();
        return s;
    }
    

}