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
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define ALL(v) v.begin(), v.end()
typedef long long ll;

#include <bits/stdc++.h>
using namespace std;


int main(){
  int n,q;
  cin>>n;
  
  int S[100010],T[50010];
  rep(i,n) cin>>S[i];
  
  cin>>q;
  rep(i,q) cin>>T[i];
  
  ll ans=0;
  rep(i,q){
    if(binary_search(S,S+n,T[i])) ans++;
  }
  cout<<ans<<endl;
  
  return 0;
}
