Poj Solution 2552

http://poj.org/problem?id=2552

//* @author: 82638882@163.com
import java.util.*;
public class Main
{
 public static void main(String[] args)
  {
   ArrayList< Integer> a=new ArrayList< Integer>();
   for(int i=2;i< 35000;i++)
     a.add(i);
   int count=0;
   while(count< a.size())
    {
     for(int i=count+a.get(count);i< a.size();i+=a.get(count))
         a.set(i, 0);
     for(int i=0;i< a.size();i++)
         if(a.get(i)==0){
             a.remove(i);
         }
     count++;
    }     
    Scanner in=new Scanner(System.in);
    while(true)
    {
    int w=in.nextInt();
    if(w==0) break;
    System.out.println(a.get(w-1));
    }
 }
}