poj1003 java

import java.util.Scanner;public class Main {public static void main(String[] args){Scanner cin = new Scanner(System.in);while(cin.hasNext()){double f = cin.nextFloat();if(f == 0)return;if(f <=0.5){System.out.println("1 card(s)");continue;}int ans = 1;double sum = 0.5;int base = 2;do{base++;ans++;sum += 1.0/base;}while(sum < f);System.out.println(ans + " card(s)");}}}