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:
'''
# Read input from stdin and provide input before running code

name = raw_input('What is your name?\n')
print 'Hi, %s.' % name
'''

line1 = raw_input()
arr_inp=[]
for j in line1.split(' '):
	arr_inp.append(int(j))

#line2 = raw_input()
elemnt_array = {}
for i in raw_input().split(' '):
	elemnt_array[i] = 1
#elemnt_array.sort()
#print elemnt_array, "and quries are", arr_inp[1]
for i in range (arr_inp[1]):
	if raw_input() in elemnt_array:
		print "YES"
	else:
		print "NO"