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.

Notes

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

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.

Examples

Input

5
1 2 3 4 5
3
3 4 1


Output

3


Input

3
1 2 3
1
5


Output

0


Input

5
1 1 2 2 3
2
1 2


Output

2
# -*- coding: utf-8 -*-

def sort(a, left, right):
    if left < right:
        mid = (left+right)/2
        pivot = a[mid]
        a[mid] = a[left]
        p = left
        for i in range(left+1, right+1):
            if a[i] < pivot:
                p = p+1
                p, i = i, p
        a[left] = a[p]
        a[p] = pivot
        sort(a, left, p-1)
        sort(a, p+1, right)

def search(a, target):
    lo = 0
    hi = n-1
    while lo <= hi:
        mid = (lo+hi)/2
        if target <= a[mid]:
            hi = mid-1
        if target >= a[mid]:
            lo = mid+1
    if lo == hi+2:
        return True
    else:
        return False

n = int(raw_input())
S = map(int, raw_input().split())
q = int(raw_input())
T = map(int, raw_input().split())
count = 0
sort(S, 0, n-1)
for i in range(q):
    if search(S, T[i]):
        count += 1
print count