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 binary_search(arr, target):
    low = 0
    high = len(arr)-1

    while low <= high:
        mid = (low+high)//2
        if target == arr[mid]:
            return True
        elif target < arr[mid]:
            high = mid-1
        else:
            low = mid+1
    return False


if __name__ == '__main__':
	n, q = map(int, raw_input().split())
	arr = list(map(int, raw_input().split()))
	arr.sort()
	for i in range(q):
		x = input()
		if binary_search(arr, x):
			print "YES"
		else:
			print "NO"