Problem:
Search II

You are given a sequence of n integers S and a sequence of different q integers T. Write a program which outputs C, the number of integers in T which are also in the set S.

Input

In the first line n is given. In the second line, n integers are given. In the third line q is given. Then, in the fourth line, q integers are given.

Output

Print C in a line.

Constraints

Elements in S is sorted in ascending order

n ≤ 100000

q ≤ 50000

0 ≤ an element in S ≤ 109

0 ≤ an element in T ≤ 109

Sample Input 1

5
1 2 3 4 5
3
3 4 1

Sample Output 1

3

Sample Input 2

3
1 2 3
1
5

Sample Output 2

0

Sample Input 3

5
1 1 2 2 3
2
1 2

Sample Output 3

2

Notes

Solution in Python3 (judge verdict: Time Limit Exceeded)

S=[]
T=[]
n=int(input())
s=input().split()
for i in range(n):
	S.append(s[i])
q=int(input())
t=input().split()
for j in range(q):
	T.append(t[j])
cnt=0
for i in range(q): #T
	for j in range(n): #S
		if T[i]==S[j]:
			cnt+=1
			break
			if S[j+1]==S[j]:
				break
print(cnt)