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(array,left,right,value):
    mid = (left + right)/2
    if(right>=left):
        if array[mid] == value:
            return 'YES'
        elif array[mid]>value:
            return binary_search(array,left,mid-1,value)
        else:
            return binary_search(array,mid+1,right,value)
    else:
        return 'NO'

n,q=map(int,raw_input().split(" "))
array=map(int,raw_input().split(" "))
array.sort()
query=[]
for i in range(q):
    query.append(input())
for each in query:
    print binary_search(array,0,n-1,each)