import java.util.Scanner;
public class Main{
    public static void main(String[] args){
        Scanner in = new Scanner(System.in);
        String strs = in.nextLine();
        String[] infos = strs.split(" ");
        int weight = Integer.parseInt(infos[0]);
        double height = Double.parseDouble(infos[1]) / 100;//单位:米
        double BMI = weight / Math.pow(height, 2);
        System.out.printf("%.2f", BMI);
    }
}