编辑代码

import java.util.Scanner;
public class Main {
public static void main(String[] args) {
		Scanner input=new Scanner(System.in);
        int h=input.nextInt();
        int r=input.nextInt();
        int c=h*r*r;
        double d=c*3.14;
        double a=20000/d;
        double z=a*10;
        double x=(int)(z+3);
        double f=x/10;
        int k=(int)f+1;
        System.out.println(k);
	}
}