import java.io.*;
import java.lang.*;
import java.util.*;

class code {
	public void print_coding()
	{
		System.out.println("Coding");
	}
}

class rocks extends code {
	public void print_rocks() { System.out.println("Rocks!"); }
}

public class Main {
	public static void main(String[] args)
	{
		rocks t = new rocks();
		t.print_coding();
		t.print_rocks();
	}
}

import static java.util.stream.DoubleStream.of;
import static org.apache.commons.lang3.ArrayUtils.reverse;

public class Arraythatdeletesduplicatenumbers {
  
    public static int removeduplicates(int a[], int n)
    {
        if (n == 0 || n == 1) {
            return n;
        }
  
        // creating another array for only storing
        int[] temp = new int[n];
        int j = 0;
  
        for (int i = 0; i < n - 1; i++) {
            if (a[i] != a[i + 1]) {
                temp[j++] = a[i];
            }
        }
  
        temp[j++] = a[n - 1];
  
        // Changing the original array
        for (int i = 0; i < j; i++) {
            a[i] = temp[i];
        }
  
        return j;
    }
    public static void main(String[] args)
    {
        int a[] = { 1, 1, 2, 2, 2, 10, 10, 30, 30};
        int n = a.length;
  
        n = removeduplicates(a, n);
  
        // Printing The array elements
        for (int i = 0; i < n; i++)
            System.out.print(a[i] + " ");
    }
}