      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  }