include

using namespace std; const int N = 100010; void check(long long arr[], long long a, long long n) {

long long l = 0, r = n - 1;

while (l < r)
{
	long long mid = (l + r) >> 1;
	if (a <= arr[mid])r = mid;
	else l = mid + 1;
}
if (arr[l] == a)cout << "YES" << endl;
else cout << "NO" << endl;

} int main() {

ios::sync_with_stdio(false);
long long n, m;
cin >> n >> m;
long long arr[N];
for (int i = 0; i < n; i++)cin >> arr[i];
for (int i = 0; i < m; i++)
{
	long long temp = 0;
	cin >> temp;
	check(arr, temp, n);
}
return 0;

}

r = mid - 1 考虑到最后 l = r的情况，这时候会一直卡在while上