#include<set>
#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<iostream>
#include<algorithm>
using namespace std;
set<int>q;
int n,p,a,b;
int main()
{
    scanf("%d%d",&n,&p);
    ;i<=n;i++)
      {
          scanf("%d",&a);
          q.insert(a);
      }
    ;i<=p;i++)
    {
        scanf("%d",&b);
        if(q.find(b)!=q.end()) printf("YES\n");
        else printf("NO\n");
     }
    ;
}