#include <iostream>
using namespace std;
int main() {
int n,k;
int a[100000];
int b[100000];
cin>>n>>k;
for (int i=0; i<n; i++)
cin>>a[i];
for (int i=0; i<k; i++)
cin>>b[i];
int L,R,c;
for (int i=0; i<k; i++)
{
L=0;
R=n;
while (L<R-1)
{
c=(L+R)/2;
if (b[i]<a[c])
R=c;
else
L=c;
}
if (b[i]==a[L])
cout<<"YES"<<endl;
else
cout<<"NO"<<endl;
}
return 0;
}
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