/* package whatever; // don't place package name! */
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		System.out.println("".equals(new StringBuilder().toString()));
		System.out.println(" ".equals(new StringBuilder("").append(" ")));
		System.out.println("".equals(new StringBuilder("").toString()));
		System.out.println(" ".equals(new StringBuilder(" ")));// your code goes here
	}
}
 

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