ZOJ-1045

import java.util.Scanner;public class Main{public static void main(String[] args){Scanner sc = new Scanner(System.in);double d = sc.nextDouble();while (d != 0.00){double n = 1;double sum = 1 / (n + 1);while (sum < d){n++;sum += 1 / (n + 1);}System.out.println((int) n + " card(s)");d = sc.nextDouble();}}}