/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	static String s;
	private static String gets() {
		return s;
	}
	public static void main (String[] args) throws java.lang.Exception
	{
		// your code goes here
		try {
			System.out.println(gets().equals(""));
		} catch (NullPointerException e) {
			System.out.println("Null pointer");
		}
	}
}

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