1  import java.util.Scanner;

  2  

  3  public class Tiles

  4  {

  5     public static void main(String[] args)

  6     {

  7        Scanner in = new Scanner(System.in);

  8  

  9        System.out.print("Total width: ");

 10        int totalWidth = in.nextInt();

 11        System.out.print("Tile width: ");

 12        int tileWidth = in.nextInt();

 13  

 14        int numberOfPairs = (totalWidth - tileWidth) / (2 * tileWidth);

 15        int numberOfTiles = 1 + 2 * numberOfPairs;

 16        double gap = (totalWidth - numberOfTiles * tileWidth) / 2.0;

 17  

 18        System.out.println("Number of tiles: " + numberOfTiles);

 19        System.out.println("Gap at each end: " + gap);

 20     }

 21  }