using System;

public class Program

{

    static int remove(int []arr,int n)

    {

        if(n==0||n==1)

            return n;

        int []temp=new int[n];

        int j=0;

        for(int i=0;i<n-1;i++)

            if(arr[i]!=arr[i+1])

                temp[j++]=arr[n-1];

        for (int i=0;i<j;i++)

            arr[i]=temp[i];

        return j;

    }

    public static void Main()

    {

        int []arr={34,4645,234,65,434,45,34,546,5};

        int n =arr.Length;

        n =remove (arr,n);

        for (int i=0;i< n;i++)

        Console.WriteLine(arr[i ] +"");

    }

}