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];
if(num!=a[i])
arr3[index]=num;
index++;
return arr3;
public static void Main()
Console.WriteLine("Hello World");