using System;

public class Program

{

    public static int[] filter(int[] a,int num)

    {

        int index=0;

        int count=1;

        for(int i=0; i<a.Length; i++)

        {

            if(num==a[i])

            {

                count++;

            }

        }

        int[] arr3=new int[a.Length-count+1];

        for(int i=0; i<a.Length; i++)

        {

            if(num!=a[i])

            {

                arr3[index]=num;

                index++;

            }

        }

        return arr3;

    public static void Main()

    {

        Console.WriteLine("Hello World");

    }

}