/* 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
{
	public static void main (String[] args) throws java.lang.Exception
	{
		Object[] a = new Object[] {
			new int[0]
		};
		Object[] b = new int[][] {
			new int[0]
		};
		System.out.println(a);
		System.out.println(b);
		System.out.println(a instanceof Object[]);
		System.out.println(b instanceof Object[]);
		System.out.println(a instanceof int[][]);
		System.out.println(b instanceof int[][]);
	}
}

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