Java-POJ1003-Hangover

 1 package poj.ProblemSet;
 2 
 3 import java.util.Scanner;
 4 
 5 public class poj1003 {
 6     public static void main(String[] args) {
 7         Scanner cin = new Scanner(System.in);
 8         for (double a=cin.nextDouble();!(Math.abs(a - 0.00) < 0.001);a = cin.nextDouble()){
 9             double sum = 0.0;
10             int ans = 0;
11             for (int i = 2; ; i++) {
12                 sum += (double) 1 / i;
13                 if (sum >= a) {
14                     ans = i - 1;
15                     break;
16                 }
17             }
18             System.out.println(ans + " card(s)");
19 
20         }
21     }
22 }