/* Desktop wallpapering program
*/

import java.util.Scanner;

public class wallpaper
{
public static void main(String[] args)
{
	Scanner kb = new Scanner(System.in);
	int screenWidth, screenHeight;
	double picWidth, picHeight;
	int ppi;
	long matArea;
	
	System.out.print("enter screen width and height in pixels: ");
	screenWidth = kb.nextInt();
	screenHeight = kb.nextInt();
	System.out.println("total screen area is " + screenWidth*screenHeight + " pixels");

	System.out.print("enter picture width and height in inches: ");
	picWidth = kb.nextDouble();
	picHeight = kb.nextDouble();
	
	System.out.print("enter ppi: ");
	ppi = kb.nextInt();
	picWidth = Math.ceil(picWidth * ppi);   // convert from inches to pixels
	picHeight = Math.ceil(picHeight * ppi);  // convert from inches to pixels
	System.out.println("picture width and height in pixels: " + picWidth + " " + picHeight);
	
	matArea = (long) (screenWidth*screenHeight - picWidth*picHeight);
	System.out.println("total mat area is " + matArea + " square pixels");
	
	System.out.println("tiling will have " + (int) Math.ceil(screenHeight/picHeight) +
					   " rows and " + (int) Math.ceil(screenWidth/picWidth) + " columns");
	
}
}