Codeforces-1A(Theatre Square) Solution in java

Program

import java.util.Scanner;

public class cp2
{
    public static void main(String args[ ])

    {

        Scanner sc = new Scanner(System.in);

        double l = sc.nextInt();
        double b = sc.nextInt();
        double a = sc.nextInt();
       
        System.out.println((long)(Math.ceil(l/a)*Math.ceil(b/a)));
    }

}

Solution of Codeforces-4A (Watermelon) Solution - https://www.techrcoding.com/2020/06/codeforces-4awatermelon-solution-in-java.html