Poj Solution 2664

http://poj.org/problem?id=2664

//* @author: 82638882@163.com
import java.util.*;
public class Main
{
 public static void main(String[] args)
 {
  Scanner in=new Scanner(System.in);
  while(true)
  {
   int a=in.nextInt();
   if(a==0) break;
   boolean bb=true;
   int b=in.nextInt();
   HashSet< Integer> hs=new HashSet< Integer>();
   while((a--)!=0) hs.add(in.nextInt());
   while((b--)!=0)
   {
    int c=in.nextInt();
    int d=in.nextInt();
    int cnt=0;
    while((c--)!=0)
    {
          int u=in.nextInt();
      if(hs.contains(u))cnt++;
    }
    if(cnt< d) bb=false;    
     }
     if(bb) System.out.println("yes");
     else System.out.println("no");    
    }
  }
}