http://poj.org/problem?id=2247 //* @author: 82638882@163.com import java.util.*; public class Main { public static void main(String[] args) { TreeSet< Integer> t=new TreeSet< Integer>(); for(int i=0;i< 50;i++) { if(Math.pow(2, i)>2000000000) break; for(int j=0;;j++) { int ans2=(int)(Math.pow(2, i)*Math.pow(3, j)); if(ans2>2000000000) break; for(int k=0;;k++) { int ans1=(int)(Math.pow(2, i)*Math.pow(3, j)*Math.pow(5, k)); if(ans1>2000000000) break; for(int w=0;;w++) { int ans=(int)(Math.pow(2, i)*Math.pow(3, j)*Math.pow(5, k)*Math.pow(7, w)); if(ans>2000000000) break; t.add(ans); } } } } Integer[] arr=new Integer[6000]; t.toArray(arr); Scanner in=new Scanner(System.in); while(true) { int n=in.nextInt(); if(n==0) break; if (n % 10==1&&n%100!=11) System.out.println("The "+n+"st humble number is "+arr[n-1]+"."); else if (n % 10==2&&n%100!=12) System.out.println("The "+n+"nd humble number is "+arr[n-1]+"."); else if (n % 10==3&&n%100!=13) System.out.println("The "+n+"rd humble number is "+arr[n-1]+"."); else System.out.println("The "+n+"th humble number is "+arr[n-1]+"."); } } }
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