/* 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<Key extends Comparable<Key>>
{
	private Key[] keys = (Key[]) new Comparable[10];
	public static void main (String[] args) throws java.lang.Exception
	{
		Ideone<Integer> test = new Ideone();
		test.keys[0] = 3;
		System.out.println(test.keys[0]);
	}
}