Exam Jan-2016 - 02. Bricks

/**
 * Project: Exam_101_January_2016 - created by borkins on 2017-05-03.
 */

import java.util.Scanner;

public class _02_Bricks
{
    public static void main(String[] args)
    {
        Scanner console = new Scanner(System.in);

        int x = Integer.parseInt(console.nextLine());
        int w = Integer.parseInt(console.nextLine());
        int m = Integer.parseInt(console.nextLine());

        System.out.println((int) Math.ceil((double) x / (w * m)));
    }
}