using System;

public class Pixel

{

    private int red;

    private int green;

    private int blue;

​

    public bool IsRed()

    {

     return this.red>=1 && this.red<=255 && this.green==0 && this.blue==0;

    }

    public bool IsBlack()

    {return this.red==0 && this.green==0 && this.blue==0;}

    public bool IsWhite()

    {return this.red==255 && this.green==255 && this.blue==255;}

}

​

public class Structure

{

    private Pixel[]arr=new Pixel[N];

    public bool IsBalanced()

    {

        int red=0,green=0,blue=0;

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

        {

         if(this.arr[i]!=null)  

         {

            if(this.arr[i].IsRed())

            {red++;}

             if(this.arr[i].IsGreen())

            {green++;}

             if(this.arr[i].IsBlue())

            {blue++;}

         }

        }

        return red==blue && red==green;

    }

    public bool IsBlackWhite()

    {

        int black=0,white=0;

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

        {

            if(this.arr[i]!=null)

            {

             if((this.arr[i].IsBlack() && this.arr[i].IsWhite())==false)

             {return false;}

             if(this.arr[i].IsBlack())

             {black++;}

             if(this.arr[i].IsWhite())

             {white++;}

            }

        }

        return black>=1 && white>=1;

    }

}

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

    }

}