Problem: You are given an array A of size N, and Q queries to deal with. For each query, you are given an integer X, and you're supposed to find out if X is present in the array A or not.

Input:
The first line contains two integers, N and Q, denoting the size of array A and number of queries. The second line contains N space separated integers, denoting the array of elements Ai. The next Q lines contain a single integer X per line.

Output:
For each query, print YES if the X is in the array, otherwise print NO.

Constraints:
1 ≤ N, Q ≤ 10^5
1 ≤ Ai ≤ 10^9
1 ≤ X ≤ 10^9

SAMPLE INPUT
5 10
50 40 30 20 10
10
20
30
40
50
60
70
80
90
100

SAMPLE OUTPUT
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO

Solution (in PYTHON):

Solution:
def bs(arr,se,l,r):
	if l<=r:
		mid=(l+r)/2
		if se==arr[mid]:
			return "YES"
		elif se<arr[mid]:
			return bs(arr,se,l,mid-1)
		elif se>arr[mid]:
			return bs(arr,se,mid+1,r)
	else:
		return "NO"


n,q=map(int,raw_input().split())
arr=map(int,raw_input().split())
arr=sorted(arr)
while q>0:
	x=input()
	if x>=arr[0] and x<=arr[-1]:
		print bs(arr,x,0,n)
	else:
		print "NO"
	q-=1