题解 | #牛牛的水杯#

import java.util.Scanner;
public class Main{
    public static void main(String[]args){
        Scanner in =new Scanner(System.in);
        String num = in.nextLine();
        String []nums=num.split(" ");
        int []list= new int[nums.length];
        for(int i =0;i<nums.length;i++)
        {
            list[i]=Integer.parseInt(nums[i]);
        }
        System.out.println((int)(10000/(3.14*list[0]*list[1]*list[1])+1));
    }
}