2. Picture in the Wall

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace _02
{
    class Program
    {
        static void Main(string[] args)
        {
            int holeW = int.Parse(Console.ReadLine());
            int holeH = int.Parse(Console.ReadLine());
            int pictureSide = int.Parse(Console.ReadLine());
            int numberPictures = int.Parse(Console.ReadLine());


            int holeSize = holeH * holeW;
            int pictureSize = pictureSide * pictureSide;
            int allPicturesSize = pictureSize * numberPictures;

            if (holeSize < allPicturesSize )
            {
                Console.WriteLine(
 "The pictures don't fit in the hole. Picture area is {0} bigger than hole area.", allPicturesSize - holeSize);
            }
            else
            {
                Console.WriteLine("The pictures fit in the hole. Hole area is {0} bigger than pictures area.", holeSize - allPicturesSize);
            }
        }
    }
}